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Effect of inhomogeneous thermal conductivity on steady periodic heat flow through semi‐infinite media
Author(s) -
Sengupta A.,
Sawhney R. L.,
Sodha M. S.
Publication year - 1995
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4440190103
Subject(s) - thermal conductivity , heat transfer coefficient , heat flux , heat transfer , materials science , thermodynamics , mechanics , thermal , heat flow , physics
The paper presents an analysis of the periodic temperature distribution in a semi‐infinite medium with continuous inhomogeneity in thermal conductivity, and evaluates its effect on the heat flux at the surface. This analysis has been used to calculate an effective heat transfer coefficient between the air and the ground. For two inhomogeneous thermal conductivity profiles (linearly decreasing and exponentially increasing), the inhomogeneity factor for the effective heat transfer coefficient has been determined.