Characteristic time of thermal and diffusional relaxation

• Published in: Геофизический журнал
• Date: 2015
• ISSN: 0203-3100
• Main Authors: Aryasova, O.V., Khazan, Ya.M.
• Format: Article
• Language: Russian
• Published: Інститут геофізики ім. С.I. Субботіна НАН України 2015
• Subjects: Научные сообщения
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/103741
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Characteristic time of thermal and diffusional relaxation / O.V. Aryasova, Ya.M. Khazan // Геофизический журнал. — 2015. — Т. 37, № 1. — С. 99-104. — Бібліогр.: 3 назв. — англ.

It is shown that frequently used dimensional estimate of a layer thermal relaxation time, tr, as L²/k based on the layer thickness, L, and thermal diffusivity, к, strongly overestimates tr. The correct estimate tr=L²/π²k should contain a factor of 1/π² which is of the order of 0.1. Показано, что час...