Characteristic time of thermal and diffusional relaxation

It is shown that frequently used dimensional estimation of a layer thermal relaxation time, tr, as L2/κ based on the layer thickness, L, and thermal diffusivity, κ, strongly overestimates tr. The correct estimate tr=L2/π2κ should contain a factor of 1/π2 which is of the order of 0.1.

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Bibliographic Details
Date:2015
Main Authors: Aryasova, O., Khazan, Ya.
Format: Article
Language:English
Published: Subbotin Institute of Geophysics of the NAS of Ukraine 2015
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Online Access:https://journals.uran.ua/geofizicheskiy/article/view/111174
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Journal Title:Geofizicheskiy Zhurnal

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Geofizicheskiy Zhurnal