Skip to main content
SpringerLink
Log in

Thermal diffusivity of inhomogeneous systems

1. Temperature-field calculation

  • Published:
Journal of engineering physics Aims and scope

Abstract

The possibility of analyzing the nonsteady temperature fields of inhomogeneous systems using the quasi-homogeneous-body model is investigated.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

Abbreviations

t, tI, ti :

temperature of quasi-homogeneous body inhomogeneous system, and i-th component of system

a, λ, cρ :

thermal diffusivity and conductivity and volume specific heat of quasi-homogeneous body

ai λi, cρi :

same quantities for the i-th component

q:

heat flux

S, V:

system surface and volume

x, y:

coordinates

ι :

macrodimension of system

α:

dimensionless temperature Fo=aτ/ι2

Bi=αι/λ:

Fourier and Biot numbers

N:

number of plates

ε=h/ι:

ratio of micro- and macrodimensions

ΔΘV,σ :

volumeaveraged and mean-square error of dimensionless-temperature determination

τ:

time

mi :

i-th component concentration

Literature cited

  1. G. N. Dul'nev and Yu. P. Zarichnyak, Heat Conduction of Mixtures and Composite Materials [in Russian], Énergiya, Leningrad (1974).

    Google Scholar 

  2. B. V. Pol'shchikov, Investigation of Thermal Conditions of Electronic Equipment in Integral Use with Conductive Heat Transfer, Author's Abstract of Candidate's Dissertation, LITMO, Leningrad (1974).

    Google Scholar 

  3. A. A. Samarskii, Difference-Scheme Theory [in Russian], Nauka, Moscow (1977).

    Google Scholar 

  4. Yu. P. Adler, E. V. Markova, and Yu. V. Granovskii, Planning Experiments with Search for Optimum Conditions [in Russian], Nauka, Moscow (1976).

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Leningrad Institute of Precision Mechanics and Optics, USSR

    G. N. Dul'nev & A. V. Sigaiov

Authors
  1. G. N. Dul'nev
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. A. V. Sigaiov
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 39, No. 1, pp. 126–133, July, 1980.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Dul'nev, G.N., Sigaiov, A.V. Thermal diffusivity of inhomogeneous systems. Journal of Engineering Physics 39, 803–809 (1980). https://doi.org/10.1007/BF00821840

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00821840

Keywords

Search

Navigation