Scheme of splitting with respect to physical processes for a model of heat and moisture transfer

Abstract

A difference scheme of splitting with respect to physical processes for a model of heat and moisture transfer is proposed. The model involves three physical processes Å heat, liquid and saturated vapor transfer in the porous material. The density of saturated vapor and the transfer coefˇcients of liquid and vapor moistures depend on the temperature. At the same time, the heat capacity and conductivity of the porous material depend on moisture. On the basis of the proposed scheme of the model, a numerical simulation of the heat and moisture transfer for a drying process has been performed. ‚ · ¡μÉ¥ ¶·¥¤²μ¦¥´ ¸Ì¥³ · ¸Ð¥ ¶²¥´¨Ö, μÉ´μ¸ÖÐ Ö¸Ö ± ˨ §¨Î¥¸±¨³ ¶·μÍ¥¸¸ ³ ¤²Ö ³μ¤¥² ¶ ¥·¥¤ Ψɥ ¶² ¨¢² £¨. ·¥¤²μ¦¥´´ Ö ³μ¤¥²Ó ¢±²ÕÎ ¥É É·¨Ë¨ §¨Î¥¸±¨Ì ¶·μÍ¥¸¸ Šɥ ¶²μ, ¦¨¤-±μ¸ÉÓ¨ ¶¥·¥¤ ÎÊ´ ¸ÒÐ¥´´μ£μ ¶ · ¢ ¶μ·¨¸ÉÒÌ ³ É¥·¨ ² Ì. ²μÉ´μ¸ÉÓ ¶μ·¨¸Éμ£μ ³ É¥·¨ ² ± μÔË˨ͨ¥´ÉÒ ¶¥·¥¤ Ψ¦¨¤±μ¸É¨¨ ¶ · § ¢¨¸ÖÉ μÉ É¥³ ¶¥· ÉÊ·Ò. ‚ Éμ ¦¥ ¢·¥³Ö É¥ ¶²μ¥³±μ¸ÉÓÉ ¥ ¶²μ ¶·μ¢μ¤¨³μ¸ÉÓ ¶μ·¨¸Éμ£μ ³ É¥·¨ ² § ¢¨¸ÖÉ μÉ Ê·μ¢´Ö ¢² £¨. μ¸´μ¢¥ ¶·¥¤²μ¦¥´´μ°³μ¤¥²· §· ¡μÉ ´μ Ψ¸²¥´´μ¥ ³μ¤¥²¨·μ¢ ´¨¥ ¶¥·¥¤ Ψɥ ¶² ¨¢² £¨¤²Ö ¶·μÍ¥¸¸ ¸Êϱ¨.