Experimental and numerical studies of pressure and gap length effects on energy deposition in spark discharge
A study of the influence of the discharge gap length and the initial gas pressure on the energy deposition into the discharge channel was done. The study was conducted at the same total discharge energy. It is experimentally shown that the connection of the voltage probe to the discharge circuit sig...
Збережено в:
| Дата: | 2021 |
|---|---|
| Автори: | , , , , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2021
|
| Назва видання: | Вопросы атомной науки и техники |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/194741 |
| Теги: |
Додати тег
Немає тегів, Будьте першим, хто поставить тег для цього запису!
|
| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Experimental and numerical studies of pressure and gap length effects on energy deposition in spark discharge / K.V. Korytchenko, I.S. Varshamova, D.V. Meshkov, D.P. Dubinin, R.I. Kovalenko, S.Yu. Nazarenko // Problems of atomic science and tecnology. — 2021. — № 1. — С. 92-97. — Бібліогр.: 15 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
irk-123456789-194741 |
|---|---|
| record_format |
dspace |
| spelling |
irk-123456789-1947412023-11-29T16:16:58Z Experimental and numerical studies of pressure and gap length effects on energy deposition in spark discharge Korytchenko, K.V. Varshamova, I.S. Meshkov, D.V. Dubinin, D.P. Kovalenko, R.I. Nazarenko, S.Yu. Low temperature plasma and plasma technologies A study of the influence of the discharge gap length and the initial gas pressure on the energy deposition into the discharge channel was done. The study was conducted at the same total discharge energy. It is experimentally shown that the connection of the voltage probe to the discharge circuit significantly affects the discharge current. The determination of the energy deposited into the spark channel is based on the results of numerical simulation of the spark channel development. Experimentally measured discharge currents at different pressures and the gap length were used as initial data for the calculation. Based on the obtained results, it is determined which of the factors (the initial pressure or the gap length) has the strongest influence on the energy input into the spark channel. Проведено дослідження впливу довжини розрядного проміжку та початкового тиску газу на введення енергії в розрядний канал. Дослідження проведено за однакової повної енергії розряду. Експериментально показано, що підключення дільника напруги до розрядного ланцюга суттєво впливає на розрядний струм. Визначення енергії, що вводиться в іскровий канал, здійснено за результатами чисельного моделювання розвитку іскрового каналу. Як вихідні дані для розрахунку використано експериментально виміряні розрядні струми при різних тисках та довжинах розрядного проміжку. На підставі отриманих результатів визначено, який з чинників (початковий тиск або довжина проміжку) більше впливає на введення енергії в іскровий канал. Проведены исследования влияния длины разрядного промежутка и начального давления газа на введение энергии в разрядный канал. Исследования проведены при одинаковой полной энергии разряда. Экспериментально показано, что подключение делителя напряжения к разрядной цепи существенно влияет на разрядный ток. Определение энергии, вводимой в искровой канал, осуществлено по результатам численного моделирования развития искрового канала. В качестве исходных данных для расчета использованы экспериментально измеренные разрядные токи при различных давлениях и длинах разрядного промежутка. На основании полученных результатов определено, какой из факторов (начальное давление или длина промежутка) больше влияет на ввод энергии в искровой канал. 2021 Article Experimental and numerical studies of pressure and gap length effects on energy deposition in spark discharge / K.V. Korytchenko, I.S. Varshamova, D.V. Meshkov, D.P. Dubinin, R.I. Kovalenko, S.Yu. Nazarenko // Problems of atomic science and tecnology. — 2021. — № 1. — С. 92-97. — Бібліогр.: 15 назв. — англ. 1562-6016 PACS: 52.80.Mg http://dspace.nbuv.gov.ua/handle/123456789/194741 en Вопросы атомной науки и техники Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Low temperature plasma and plasma technologies Low temperature plasma and plasma technologies |
| spellingShingle |
Low temperature plasma and plasma technologies Low temperature plasma and plasma technologies Korytchenko, K.V. Varshamova, I.S. Meshkov, D.V. Dubinin, D.P. Kovalenko, R.I. Nazarenko, S.Yu. Experimental and numerical studies of pressure and gap length effects on energy deposition in spark discharge Вопросы атомной науки и техники |
| description |
A study of the influence of the discharge gap length and the initial gas pressure on the energy deposition into the discharge channel was done. The study was conducted at the same total discharge energy. It is experimentally shown that the connection of the voltage probe to the discharge circuit significantly affects the discharge current. The determination of the energy deposited into the spark channel is based on the results of numerical simulation of the spark channel development. Experimentally measured discharge currents at different pressures and the gap length were used as initial data for the calculation. Based on the obtained results, it is determined which of the factors (the initial pressure or the gap length) has the strongest influence on the energy input into the spark channel. |
| format |
Article |
| author |
Korytchenko, K.V. Varshamova, I.S. Meshkov, D.V. Dubinin, D.P. Kovalenko, R.I. Nazarenko, S.Yu. |
| author_facet |
Korytchenko, K.V. Varshamova, I.S. Meshkov, D.V. Dubinin, D.P. Kovalenko, R.I. Nazarenko, S.Yu. |
| author_sort |
Korytchenko, K.V. |
| title |
Experimental and numerical studies of pressure and gap length effects on energy deposition in spark discharge |
| title_short |
Experimental and numerical studies of pressure and gap length effects on energy deposition in spark discharge |
| title_full |
Experimental and numerical studies of pressure and gap length effects on energy deposition in spark discharge |
| title_fullStr |
Experimental and numerical studies of pressure and gap length effects on energy deposition in spark discharge |
| title_full_unstemmed |
Experimental and numerical studies of pressure and gap length effects on energy deposition in spark discharge |
| title_sort |
experimental and numerical studies of pressure and gap length effects on energy deposition in spark discharge |
| publisher |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| publishDate |
2021 |
| topic_facet |
Low temperature plasma and plasma technologies |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/194741 |
| citation_txt |
Experimental and numerical studies of pressure and gap length effects on energy deposition in spark discharge / K.V. Korytchenko, I.S. Varshamova, D.V. Meshkov, D.P. Dubinin, R.I. Kovalenko, S.Yu. Nazarenko // Problems of atomic science and tecnology. — 2021. — № 1. — С. 92-97. — Бібліогр.: 15 назв. — англ. |
| series |
Вопросы атомной науки и техники |
| work_keys_str_mv |
AT korytchenkokv experimentalandnumericalstudiesofpressureandgaplengtheffectsonenergydepositioninsparkdischarge AT varshamovais experimentalandnumericalstudiesofpressureandgaplengtheffectsonenergydepositioninsparkdischarge AT meshkovdv experimentalandnumericalstudiesofpressureandgaplengtheffectsonenergydepositioninsparkdischarge AT dubinindp experimentalandnumericalstudiesofpressureandgaplengtheffectsonenergydepositioninsparkdischarge AT kovalenkori experimentalandnumericalstudiesofpressureandgaplengtheffectsonenergydepositioninsparkdischarge AT nazarenkosyu experimentalandnumericalstudiesofpressureandgaplengtheffectsonenergydepositioninsparkdischarge |
| first_indexed |
2025-07-16T22:13:24Z |
| last_indexed |
2025-07-16T22:13:24Z |
| _version_ |
1837843356974055424 |
| fulltext |
ISSN 1562-6016. ВАНТ. 2021. №1(131)
92 PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY. 2021, №1. Series: Plasma Physics (27), p. 92-97.
https://doi.org/10.46813/2021-131-092
EXPERIMENTAL AND NUMERICAL STUDIES OF PRESSURE AND
GAP LENGTH EFFECTS ON ENERGY DEPOSITION IN SPARK
DISCHARGE
K.V. Korytchenko
1
, I.S. Varshamova
1
, D.V. Meshkov
1
, D.P. Dubinin
2
,
R.I. Kovalenko
2
, S.Yu. Nazarenko
2
1
National Technical University “KhPI”, Kharkiv, Ukraine;
2
National University of Civil Defence of Ukraine, Kharkiv, Ukraine
E-mail: omsroot@kpi.kharkov.ua; korytchenko_kv@ukr.net
A study of the influence of the discharge gap length and the initial gas pressure on the energy deposition into the
discharge channel was done. The study was conducted at the same total discharge energy. It is experimentally shown
that the connection of the voltage probe to the discharge circuit significantly affects the discharge current. The de-
termination of the energy deposited into the spark channel is based on the results of numerical simulation of the
spark channel development. Experimentally measured discharge currents at different pressures and the gap length
were used as initial data for the calculation. Based on the obtained results, it is determined which of the factors (the
initial pressure or the gap length) has the strongest influence on the energy input into the spark channel.
PACS: 52.80.Mg
INTRODUCTION
Spark discharge is used in many devices, where the
initial pressure and length of the spark gap varies widely
[1-3]. For applied problems, there is a need to determine
the effect of pressure and the discharge gap length on
the energy input into the spark. But in this case there is a
problem in the separation of these effects on the energy
deposition into the spark discharge. This is because a
change in the initial gas pressure or the spark gap length
leads to a change in the breakdown voltage of the gap.
Therefore, under constant other parameters of the dis-
charge circuit, under these conditions there is a change
in the total discharge energy due to the increase in the
charging voltage of the capacitor to have the spark
breakdown. As a result, it makes it difficult to detect the
effect of the initial gas pressure or the spark gap length
on the energy deposition into the spark channel under
conditions of change in the total discharge energy [1].
To prevent a change in the total discharge energy
under conditions of change in gas pressure or the length
of the gap, it is possible to use a discharge circuit with
series-connected three-electrode triggered spark gaps
[4]. But the presence of such triggered gaps also affects
the energy input into the spark channel, because it adds
a variable resistance in the discharge circuit. Therefore,
there is a need to create a special technique for measur-
ing such effects.
An experimental study of the effect of the initial gas
pressure and the discharge gap length on the energy in-
put into the spark discharge was carried out in work [1-
3, 5], but the separation of these effects from the influ-
ence of other factors was not performed. The use of nu-
merical models of the expansion of the spark channel
allows studying the spark discharge at constant total
discharge energy by invariable parameters of the electric
circuit [6, 7]. This approach is used to study the effect of
initial pressure on the spark evolution [8, 9]. The influ-
ence of the gap length was studied in work [10]. At the
same time, there are no experimental works in which the
influence of the initial gas pressure and the gap length
was studied at invariable total discharge energy. There-
fore, in this work, a study was carried out at invariable
discharge energy.
There are problems to experimentally measure the
energy input into the spark channel. In particular, the
calculation-experimental method based on measure-
ments of discharge current and voltage across the dis-
charge gap is widespread [12, 13]. But in work [14] it is
shown that a connection of the voltage probe to the
measured spark gap leads to the influence on the dis-
charge process that significantly changes the discharge
current and voltage across the discharge gap. The study
of this effect was performed for a spark discharge with
the total energy equals to several micro Joules. There-
fore, there is a need to verify this effect when the total
discharge energy is increased. Therefore, we investigat-
ed such an impact when the total energy exceeds a hun-
dred of milli Joules.
Thus, the aim of this work is a calculation-
experimental study of the influence of the initial pres-
sure and the length of the spark gap on the energy input
into the discharge channel by invariable total discharge
energy.
TECHNIQUE AND METHODS
OF MEASUREMENTS
The capacitor discharge through the spark gap was
investigated. A condition when a spark breakdown hap-
pens by an invariable voltage supplied to the spark gap
is provided if the initial gap pressure and the gap length
are variable. For this purpose, the known dependence of
the breakdown voltage ubr is used
ISSN 1562-6016. ВАНТ. 2021. №1(131) 93
dp~u
br
, (1)
where р is the initial gas pressure; d is the spark gap
length.
Thus, the change in the length of the discharge gap
was compensated by the change in the initial gas pres-
sure to achieve an invariable breakdown voltage. As a
result, a spark discharge was ignited by constant total
discharge energy and invariable parameters of the elec-
tric circuit.
The setup was assembled according to the scheme
(Fig. 1). To change the initial gas pressure, the discharge
gap 1 was placed in the high pressure chamber 2. The
pressure chamber was connected to a high pressure gas
tank 3. Compressed air was supplied through a valve 4.
The initial gas pressure in the chamber was measured by
a manometer 5. Gas outflow from the chamber was car-
ried out through the valve 6. The voltage was measured
by a voltage probe 7 (resistive capacitive voltage divid-
er). The measurement of the discharge current was car-
ried out by a current sensor 8 using the Hall effect. The
capacitor C was charged from the step-up transformer
T2, the primary circuit of which was connected to the
laboratory autotransformer T1, and the secondary wind-
ing of this transformer was connected to the capacitor C
through the rectifier diode VD and the current limiting
resistor Rch. High-frequency litz wire was used to con-
nect the capacitor with the spark gap. An additional in-
termediate connection points for the voltage probe was
made between the gap and the capacitor.
Fig. 1. Scheme of the setup
A capacitor type K15-10 with a capacity of 4700 pF
± 30 % was used as a discharge capacitor. Steel elec-
trodes are used. PINTEK HVP-15HF voltage sensor
was applied as a voltage probe. A Honneywell
CSNM191 sensor was used to measure the current. The
electrical connection between the capacitor and the
spark gap was made by a litz wire with a LESHO type
1075x0.071 mm to reduce the skin effect on the re-
sistance of the electrical circuit. The total length of the
litz wire was 1.5 m. Measured signals from current and
voltage sensors were recorded by Rigol DS1102E oscil-
loscope. The change in the length of the gap occurred in
the range of 1...2 mm. The absolute gas pressure in the
chamber was adjusted in the range from 0.1 to 0.2 MPa.
The length of the discharge gap was measured by a cali-
per with a measurement accuracy of ± 0.1 mm. Gas
pressure was measured by a manometer DM05063 with
2.5 class accuracy. The resistance of the charging resis-
tor was 43 kΩ. Taking into account the high variance of
the actual capacitance of the discharge capacitor, the
measurement of its actual capacitance was performed by
a digital impedance meter E7-22.
The view of the discharge circuit with measuring
equipments is presented in Fig. 2.
Fig. 2. Discharge circuit with measuring equipments:
1 – capacitor; 2 – current sensor; 3 – discharge gap
placed in the high pressure chamber; 4 – additional
intermediate connection points; 5 – voltmeter;
6 – laboratory autotransformer; 7 – HV probe
The follow sequence of measurements was applied.
The measurement was carried out at an invariable
breakdown voltage of the discharge gap, but different
initial gas pressure and gap length. To achieve these
conditions, the required length of the discharge gap was
set. Next, the chamber where the discharge gap was
placed was filled with compressed gas. The gas pressure
was set in such a way that in the case of supplying a
required voltage to the discharge gap, the breakdown by
this voltage did not occur. After that, the required volt-
age was supplied to the discharge gap. Next, the gas
supply valve was closed, and the outlet valve was
opened to exhaust the gas from the chamber. During the
slow gas outflow, the manometer was monitored. After
reducing the gas pressure, the breakdown of the dis-
charge gap happened at a required voltage. When the
breakdown happened, the pressure value was measured.
Also, signals from current and pressure sensors were
oscillated simultaneously in standby mode. Synchroniza-
tion of input signals was carried out by the falling signal
from the voltage sensor.
The measurement of the discharge current was per-
formed at different connection points of the voltage
probe. At first case, the probe was connected directly to
the capacitor. At the second case, it was connected at the
intermediate point (Fig. 2). At the third case, it was con-
nected to the discharge electrodes.
MEASUREMENT RESULTS
According to the measurement of the capacitance of
the discharge circuit, it was found that the capacitance
without a connected voltage probe was equal to (4.92 ±
0.04) nF. In the case of connecting a voltage probe to an
electrical circuit, the capacitance of the circuit increased
to (4.93 ± 0.04) nF.
The results of the study revealed the influence of the
connection point of the voltage probe on the discharge
current. In particular, the results of measuring the cur-
rent in the discharge circuit and the voltage at different
94 ISSN 1562-6016. ВАНТ. 2021. №1(131)
connection points are shown in Figs. 3-5. In the present-
ed oscillograms, the voltage sensitivity is
2.5 kV/division, and the current sensitivity is
180 A/division.
Fig. 3. Oscillograms of current i in the discharge circuit
and voltage u when the voltage probe connected to the
capacitor
Fig. 4. Oscillograms of current i in the discharge circuit
and voltage u when the voltage probe connected to the
spark gap
Fig. 5. Oscillograms of current i in the discharge circuit
and voltage u when the voltage probe connected to the
intermediate connection points
According to the measurement results, we observe
the current which is characteristic of the oscillating
damping discharge of the capacitor.
According to the measurement results (see Fig. 3),
we have that the period of oscillations during the first
period of the discharge is equal to about
T ≈ (490 ± 10) ns. Hence, the inductance LSC of the
LC-circuit can be determined from the following equa-
tion
CLT
SC
12
, (2)
where ω is an angular frequency.
Taking into ccount that the capacitance equals to
C = 4.92 nF and period is T = 490 ns, we have the cir-
cuit inductance of LSC ≈ 1.24 μH.
We observe in Fig. 3 that the phase shift between
voltage and current is not equal to 90º, which reflects
the presence the self inductance of the capacitor and the
resistance additionally to the capacitance in the meas-
ured circuit branch. If φ = 90 º, then the maximum value
of current in a series LC-circuit would correspond to
zero value of voltage across the capacitor. And this is
not observed on the measured oscillogram (see Fig. 3).
We observe that the connection of the voltage probe
to different points led to a change in the discharge cur-
rent (see Figs. 3-5). Higher harmonics are superimposed
on the main harmonic of the current reflecting the oscil-
lating discharge. In this case, the smallest amplitude of
the higher harmonics occurs when the voltage probe is
connected directly to the discharge capacitor.
This effect of connecting a voltage probe on the dis-
charge current is explained by the fact that in the con-
ducted research the discharge circuit cannot be repre-
sented by lumped circuit elements, similar to RLC-
circuit. It is known that the discharge gap have a capaci-
tance, and in the process of the spark discharge devel-
opment there is a change in the resistance of the spark
discharge and the inductance of the conductive spark
channel. Therefore, the equivalent electrical circuit of
the discharge circuit takes the form (Fig. 6) [14].
Fig. 6. Equivalent electrical circuit of the discharge
circuit without a connected voltage probe [14]
Connecting the voltage divider to the discharge cir-
cuit leads to an increase in the total capacity of this cir-
cuit [12]. Also, such a connection affects the discharge
processes by changing the equivalent circuit of the dis-
charge circuit. Assuming that the resistance of the volt-
age probe is much greater than the resistance of the ele-
ments of the discharge circuit, this component can be
neglected. As a result, the equivalent electrical circuit of
the discharge circuit with the connected voltage probe is
presented by a scheme (Fig. 7).
Moving the cd nodes of the HV-probe along the con-
nection wires causes a change in the inductances L01 and
L02 and the resistance R01 and R02. It should be noted that
even if the voltage divider is connected to the discharge
capacitor or to the discharge electrodes, the
ISSN 1562-6016. ВАНТ. 2021. №1(131) 95
presence of these inductances cannot be avoided. This
is due to the fact that the capacitor has its self induct-
ance and resistance and the discharge electrodes also
include inductive elements with a certain resistance.
Fig. 7. Equivalent electrical circuit of the capacitor
discharge with the connected voltage probe
These factors can be detected by modeling the transi-
tion process in the discharge circuit (see Fig. 6) by the
following system of equations [14]:
0
11
10
0
0 dti
C
Ri
dt
di
Ldti
С sp
, (3)
0
1
22
2
1 iR
dt
dL
i
dt
di
Ldti
C
sp
sp
sp
sp
, (4)
210 iii . (5)
Substituting into the system of equations the parame-
ters of the investigated circuit (C = 4.9 μF; L = 1.0 μH;
R = 0.1 ), and assuming that the discharge gap with the
voltage probe acquire the parameters Csp = 30 pF;
Lsp = 0.24 μH; Rsp = 1 , we obtain the following dis-
charge current i0 (Fig. 8).
Fig. 8. Simulated current i0
The obtained result qualitatively demonstrates the ef-
fect of connecting the voltage probe on the discharge
current.
Taking into account that the connection of the volt-
age divider to the discharge gap leads to a change in the
discharge current (see Figs. 3, 4), in this case, the results
of measuring the voltage drop across the gap and dis-
charge current are not correct to use for calculation the
energy deposition in the discharge gap. Therefore, the
investigation of the influence of the gap length and the
initial gas pressure was carried out by numerical model-
ing of the spark discharge evolution using the measured
discharge currents as the input data.
The result of the current and voltage measuring that
occurs in the circuit with the gap length of 1 mm, where
the initial gas pressure was 0.2 MPa, is presented in
Fig. 9. The voltage probe was connected to the capaci-
tor. The result of the current and voltage measuring cur-
rent with the length of 2 mm and the pressure of 0.1
MPa is presented in Fig. 10.
We observe from the obtained results that an initial
voltage of the charged capacitor is the similar in both
cases. And the largest current amplitude is reached on a
discharge gap of the shortest length, despite the increase
of the initial gas pressure in the gas-discharge medium.
Fig. 9. Oscillograms of current i in the discharge circuit
and voltage u by the length of 1 mm and an initial pres-
sure of 0.2 MPa
Fig. 10. Oscillograms of current i in the discharge cir-
cuit and voltage u by the length of 2 mm and an initial
pressure of 0.1 MPa
To evaluate the energy of the spark discharge depos-
ited into the discharge gap, the numerical model de-
scribed in works [8-10] was used. The model is based on
the equations of gas dynamics for compressible gas, the
equations of nonequilibrium chemical kinetics, the equa-
tions of the gas state. The calculation of the electrical
conductivity of gas in the temperature range over
10000 K is performed according to the Saha equations
and the equation of conductivity of highly ionized gas.
Heat transfer by radiation in a conductive channel is
calculated by the equations of radiant thermal conduc-
tivity in a gray body.
The calculation results of the energy input into the
96 ISSN 1562-6016. ВАНТ. 2021. №1(131)
spark channel and the resistance of the spark channel are
presented in Figs. 11, 12.
Fig. 11. The change in energy deposited into the spark
channel over time
According to the results of numerical studies, we ob-
serve that an increase in the length of the gap under
conditions of proportional pressure drop leads to an in-
crease in the energy deposited into the spark channel
(see Fig. 11). It should be noted that this increase occurs
despite the decrease in the amplitude of the discharge
current in the case of increasing the length of the gap
(see Figs. 9, 10). The increase in energy under condi-
tions of decreasing discharge current is caused by an
increase in the resistance of the spark channel (see
Fig. 12).
Fig. 12. Changing the resistance of the spark channel
over time
The increase in the resistance of the spark gap ex-
plains the decrease in the amplitude of the discharge
current obtained by the measurement results (see
Figs. 9, 10).
In the conditions of the carried-out researches we
have growth of the energy input into the spark channel
in 1.35 times. It is known [1-5] that an increase in pres-
sure and an increase in the length of the gap lead to an
increase in the energy input. In particular, according to
work [15], the energy input into the spark channel is
directly proportional to the length of the gap. That is, a
2-fold increase in the length of the gap at constant dis-
charge current leads to a 2-fold increase in the energy
deposited into the discharge. According to work [8], a 2-
fold decrease in pressure leads to a decrease in energy
deposited into the discharge by 1.2 times. Under these
conditions, the energy would increase by 1.67 times. But
it is necessary to take into account the increase in the
resistance of the discharge channel happens in condi-
tions of decreasing the amplitude of the discharge cur-
rent in the investigated case. This explains the deviation
of the obtained result from the result of other studies.
We have, according to obtained results, that the
length of the discharge gap has a greater influence on
the energy input when the same multiplicity of pressure
change and the opposite change in the gap length take
place.
CONCLUSIONS
Based on experimental and computational studies of
the effect of the length of the discharge gap and the ini-
tial gas pressure on the energy input into the discharge
channel, it was found that the gap length factor affects
the energy input to the discharge channel more than the
initial pressure factor. In particular, in the conditions of
the conducted researches in case of increase of length of
an interval in 2 times with simultaneous decrease in the
pressure in 2 times there was an increase in the energy
deposited into the spark channel in 1.35 times.
It is experimentally confirmed that the connection of
the voltage probe to the discharge circuit, in conditions
when the total discharge energy exceeds 100 mJ, affects
the discharge current. Therefore, for an adequate de-
scription of the discharge processes, it is advisable to
consider the discharge circuit as a distributed-element
circuit.
REFERENCES
1. C.J. Benito Parejo, Q. Michalski, C. Strozzi, J. Sot-
ton, M. Bellenoue. Characterization of Spark Ignition
energy transfer by optical and non-optical diagnostics //
8th European Combustion Meeting. 2017, p. 898-902.
2. L. Xiaoang, L. Xuandong, Fanhui Z, Hao Y, and
Qiaogen Z. Study on Resistance and Energy Deposition
of Spark Channel Under the Oscillatory Current Pulse //
IEEE Transactions on Plasma Science. 2014, v. 42,
p. 2259.
3. M. Belmouss. Effect of electrode geometry on high
energy spark discharges in air // Thesis, Purdue Univer-
sity West Lafayette, Indiana, 2015.
4. V. Kamenskihs, H.D. Ng, J.H.S. Lee. Measurement of
Critical Energy for Direct Initiation of Spherical Detona-
tions in Stoichiometric High-Pressure H2-O2 Mixtures //
Combustion and Flame. 2010, v. 157, p. 1795-1799.
5. J. Zhang, A.H. Markosyan, M. Seeger, E.M. van
Veldhuizen, E.J.M. van Heesch, U. Ebert. Numerical
and experimental investigation of dielectric recovery in
supercritical N2 // Plasma Sources Sci. Technol. 2015,
v. 24, p. 025008.
6. Y. Tanaka, T. Michishita, Y. Uesugi. Hydrodynamic
chemical non-equilibrium model of a pulsed arc dis-
charge in dry air at atmospheric pressure // Plasma
Sources Science and Technology. 2005, v.14, p. 134-
148.
7. Y Tanaka, T Sakuta. Modelling of a pulsed discharge
in N2 gas at atmospheric pressure // Journal of Physics
D: Applied Physics. 1999, v.32, p. 3199.
8. K. Korytchenko, S. Tomashevskiy, et al. Numerical
investigation of energy deposition in spark discharge in
adiabatically and isothermally compressed nitrogen //
Japanese Journal of Applied Physics. 2020, v. 59,
№ SH.
ISSN 1562-6016. ВАНТ. 2021. №1(131) 97
9. K. Korytchenko et al. Numerical simulation of initial
pressure effect on energy input in spark discharge in
nitrogen // Problems of Atomic Science and Technology.
Series «Plasma Electronics and New Methods of Accel-
eration». 2019, N 122, p. 116-119.
10. K. Korytchenko et al. Numerical simulation of gap
length influence on energy deposition in spark discharge
// Electrical Engineering and Electromechanics. 2021,
v. 1, р.43-51.
11. K. Korytchenko, S. Essmann, D. Markus, U. Maas,
E. Poklonskii. Numerical and Experimental Investiga-
tion of the Channel Expansion of a Low-Energy Spark
in the Air // Combustion Science and Technology. 2019,
v. 191, p. 2136-2161.
12. B. Sforzo, J. Kim, A. Lambert, J. Jagoda, S. Menon,
J. Seitzman. High energy spark kernel evolution: Meas-
urements and modeling // 8th US National Combustion
Meeting, University of Utah, May 19-22, 2013,
p. 070IC-0272.
13. R. Payri, R. Novella, A. Garcia, V. Domenech. A
new methodology to evaluate engine ignition systems in
high density conditions // Experimental Techniques.
2014, v. 38, p.17-28.
14. K. Korytchenko, S. Essmann, R. Tomashevskiy, et
al. Challenges of energy measurements of low-energy
spark discharges // 2020 IEEE KhPI Week on Advanced
Technology (KhPIWeek). 2020, p. 421-424.
15. I. Abramson, N. Gegechkory. Oscilloscope investi-
gation of spark discherg // J. Exp. and Theor. Physics.
1951, v.21, p. 484-492.
Article received 16.11.2020
ЭКСПЕРИМЕНТАЛЬНОЕ И ЧИСЛЕННОЕ ИССЛЕДОВАНИЯ ВЛИЯНИЯ ДАВЛЕНИЯ И ДЛИНЫ
РАЗРЯДНОГО ПРОМЕЖУТКА НА ВВОД ЭНЕРГИИ В ИСКРОВОМ РАЗРЯДЕ
К.В. Корытченко, И.С. Варшамова, Д.В. Мешков, Д.П. Дубинин, Р.И. Коваленко,
С.Ю. Назаренко
Проведены исследования влияния длины разрядного промежутка и начального давления газа на введение
энергии в разрядный канал. Исследования проведены при одинаковой полной энергии разряда. Эксперимен-
тально показано, что подключение делителя напряжения к разрядной цепи существенно влияет на разрядный
ток. Определение энергии, вводимой в искровой канал, осуществлено по результатам численного моделиро-
вания развития искрового канала. В качестве исходных данных для расчета использованы экспериментально
измеренные разрядные токи при различных давлениях и длинах разрядного промежутка. На основании по-
лученных результатов определено, какой из факторов (начальное давление или длина промежутка) больше
влияет на ввод энергии в искровой канал.
ЕКСПЕРИМЕНТАЛЬНЕ І ЧИСЕЛЬНЕ ДОСЛІДЖЕННЯ ВПЛИВУ ТИСКУ ТА ДОВЖИНИ
РОЗРЯДНОГО ПРОМІЖКУ НА ВВЕДЕННЯ ЕНЕРГІЇ В ІСКРОВИЙ РОЗРЯД
К.В. Коритченко, І.С. Варшамова, Д.В. Мешков, Д.П. Дубінін, Р.І. Коваленко,
С.Ю. Назаренко
Проведено дослідження впливу довжини розрядного проміжку та початкового тиску газу на введення
енергії в розрядний канал. Дослідження проведено за однакової повної енергії розряду. Експериментально
показано, що підключення дільника напруги до розрядного ланцюга суттєво впливає на розрядний струм.
Визначення енергії, що вводиться в іскровий канал, здійснено за результатами чисельного моделювання роз-
витку іскрового каналу. Як вихідні дані для розрахунку використано експериментально виміряні розрядні
струми при різних тисках та довжинах розрядного проміжку. На підставі отриманих результатів визначено,
який з чинників (початковий тиск або довжина проміжку) більше впливає на введення енергії в іскровий ка-
нал.
|