Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2007.05b
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- Pages.3033-3038
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- 2007
Stability analysis of gas-liquid interface using viscous potential flow
점성포텐셜유동을 이용한 이상유동장의 표면안정성 해석
- Published : 2007.05.30
Abstract
In this research, Rayleigh instability of gas-liquid flow in annular pipe is studied in film boiling using viscous potential flow. Viscous potential flow is a kind of approximation of gas-liquid interface considering velocity field as potential including viscosity. A dispersion relation is obtained including the effect of heat and mass transfer and viscosity. New expression for dispersion relation in film boiling and critical wave number is obtained. Viscosity and heat and mass transfer have a stabilizing effect on instability and its effect appears in maximum growth rate and critical wave number. And the existence of marginal stability region is shown.