Numerical modeling of liquid oxygen evaporation in steam using non-equilibrium boundary conditions

N. A. Slavinskaya, O. J. Haidn

Research output: Contribution to conferencePaperpeer-review

Abstract

The problem of non-equilibrium boundary conditions on the surface of an evaporating liquid oxygen (LOX) droplet is considered. Temperature and concentration jump boundary conditions were used to describe the kinetic effects on the cryogenic droplet surface under high ambient temperatures. The properties of these jump formalisms were analyzed and the possibility of its employment in a numerical study of evaporation in a LOX/H20 system investigated. With these boundary conditions the numerical modeling of quasi-stead evaporation of LOX in stagnant steam was carried out: droplet lifetimes and analytical solutions for temperature and concentrations distributions in the vicinity around an evaporating droplet are derived. The coefficients of temperature and concentration jumps show a great sensitivity to changes in the thermo-physical properties of the system. The results demonstrate that these jump boundary conditions are valid for the modeling of evaporation especially in systems where the assumption of equilibrium conditions on the phase boundary is questionable.

Original languageEnglish
DOIs
StatePublished - 2001
Externally publishedYes
Event39th Aerospace Sciences Meeting and Exhibit 2001 - Reno, NV, United States
Duration: 8 Jan 200111 Jan 2001

Conference

Conference39th Aerospace Sciences Meeting and Exhibit 2001
Country/TerritoryUnited States
CityReno, NV
Period8/01/0111/01/01

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