Thermal diffusivity of inhomogeneous systems |
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Authors: | G N Dul'nev A V Sigaiov |
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Affiliation: | (1) Leningrad Institute of Precision Mechanics and Optics, USSR |
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Abstract: | The possibility of analyzing the nonsteady temperature fields of inhomogeneous systems using the quasi-homogeneous-body model is investigated.Notation t, tI, ti
temperature of quasi-homogeneous body inhomogeneous system, and i-th component of system
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a, , c
thermal diffusivity and conductivity and volume specific heat of quasi-homogeneous body
- ai i, c i
same quantities for the i-th component
- q
heat flux
- S, V
system surface and volume
- x, y
coordinates
-
macrodimension of system
-
dimensionless temperature Fo=a / 2
- Bi=![agr](/content/wg2v0wr8u6541288/xxlarge945.gif) /
Fourier and Biot numbers
- N
number of plates
- =h/
ratio of micro- and macrodimensions
- ![Delta](/content/wg2v0wr8u6541288/xxlarge916.gif) V,
volumeaveraged and mean-square error of dimensionless-temperature determination
-
time
- mi
i-th component concentration
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 39, No. 1, pp. 126–133, July, 1980. |
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Keywords: | |
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