Characteristic time of thermal and diffusional relaxation

• Datum: 2015
• Hauptverfasser: Aryasova, O., Khazan, Ya.
• Format: Artikel
• Sprache: Englisch
• Veröffentlicht: S. Subbotin Institute of Geophysics of the NAS of Ukraine 2015
• Schlagworte: characteristic time; thermal relaxation
• Online Zugang: https://journals.uran.ua/geofizicheskiy/article/view/111174
• Назва журналу: Geofizicheskiy Zhurnal

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.