Phase Discontinuities in Water Flows through a Porous Medium

被引:5
|
作者
Afanas'ev, A. A.
Barmin, A. A.
机构
基金
俄罗斯基础研究基金会;
关键词
flow through a porous medium; phase transitions; discontinuities; evolutionarity; discontinuity structure;
D O I
10.1007/s10697-006-0075-2
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
Flow of a fluid through a porous medium is considered with allowance for heat conduction processes and phase transitions. Discontinuities in flows between both single-phase zones saturated with water and steam and single-and two-phase zones saturated with an equilibrium steam-water mixture are studied. It is shown that only the evaporation fronts are evolutionary for a convex-downward shock adiabat of the discontinuity inside the steam-water mixture. The structure of these fronts is considered and a condition supplementary to the conservation laws and necessary for the well-posed formulation of problems whose solution contains this front is found from the condition of existence of a discontinuity structure between the water (steam) and the steam-water mixture.
引用
收藏
页码:574 / 584
页数:11
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