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2 Structure and Environment

2 2015

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Calculating soil thermal properties for the purpose of numerical simulation of heat transfer in multi-layered ground profile

Kozłowski T., Kolankowska M., Walaszczyk Ł.

Structure and Environment

2015

Vol. 7, no. 2

87--94

An example of simulation made by use of a program based on a one-dimensional heat transfer model is presented. Some detailed values and solutions related to soil thermal properties are given, among them, particularly, the freezing point Tf and the unfrozen water content function u(T) are discussed. The results of computation done for multilayered ground profile suggest the occurrence of the “real” depth of frost, as opposed to “conventional” depth of frost, identified with the depth of the zero isotherm.

A finite difference scheme to solve one-dimensional problems associated with soil freezing and thawing

Kozłowski T., Kolankowska M., Walaszczyk Ł.

Structure and Environment

2015

Vol. 7, no. 1

34--42

A finite difference scheme, which can be easily used for PC-programming to solve one-dimensional problems associated with soil freezing and thawing is presented. The method takes into account the real phase equilibria in the soil-water system, thereby being better interpretable both physically and in terms of soil mechanics. Some special computational procedures have been given, among them those relating to the crossing the freezing point and to determining the initial temperature distribution.