熱力学的界面ジャンプ条件の考察(流体工学,流体機械)

概要

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At a gas-liquid interface, there are many unknown physical and chemical phenomena related to thermodynamics, electromagnetics, hydrodynamics, and heat and mass transfer. Therefore, a modeling of gas-liquid interface is one of key issues of the numerical research on multiphase flow. In the previous our study, having assumed that the interface is a thin membrane and has a finite thickness, we have developed a new mathematical model of the gas-liquid interface based on thermodynamics and mathematical approach. In that study, we have derived the new equation of free energy based on the lattice gas model including influence of the electric double layer caused by a contamination. In this paper, by using that new interface model, we derive the jump condition at gas-liquid interface treated by thermodynamics. Finally, we compare this thermodynamic jump condition with the conventional one. As a result, we reveal that the conventional jump condition is true under the specific condition and the thermodynamic jump condition is the general formalism rather than the conventional one.
一般社団法人日本機械学会の論文
2008-01-25