被服材料の有効熱伝導率のモデル化と数値解析(熱工学,内燃機関,動力など)

概要

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In the present study, effective thermal conductivities of wet clothing material were numerically analyzed based on a proposed heat transfer model. The following simplifications are made. The clothing material is woven with a single yarn, there is no air movement among yarns, and also mass transfer is neglected. Numerical calculations were made based on the finite difference equations of steady three-dimensional heat conduction equations for several composite materials representing wet clothing materials. The following results are obtained. The effective thermal conductivity increases with increasing thermal conductivity of yarn and of water content. It is found that the present numerical results are in good agreement with the previously measured ones. The effective thermal conductivity of wet layered materials depends on the distribution of water, and attains a maximum in the wet layer.
1997-07-25