科研之友
微信
新浪微博
Facebook
分享链接
摘要
Biological tissues can be treated as porous media as it is composed of dispersed cell separated by connective voids which allow flow of nutrients, minerals, etc., to reach all cells within the tissue. In this present study, a mathematical model has been developed to study the phase change phenomena during the freezing and thawing process in biological tissues using porous media approach. Effective heat capacity formulation is used for the phase change problem. Numerical simulation is used to study the effect of porosity, on the motion of freezing and thawing front and transient temperature distribution in tissue. It is observed that porosity has significant effect on transient temp profile and phase change interfaces; further decrease in freezing and heating rate has been found with increased value of porosity.
- 出版日期2010-9
