Abstract
A compressible jet flow of ammonia was studied through a series of Large Eddy Simulations. Simulations were focused in the zone where the inertial effects are much bigger than the gravitational ones. The ammonia jet is discharged into an air medium and the gases are treated as a two non-reactive ideal gas mixture. Different simulations were performed, going from the use of constant transport properties to the use of kinetic theory of gases relations for calculating them as a function of the resolved variables. The main goal of the present study is to investigate the effect of varying density as well as variable transport properties on the turbulent flow behavior.
Highlights
NUMERICAL CONSIDERATIONSThe study of accidental atmospheric jet releases of toxic gases together with its subsequent dispersion and the mixing of gases in combustion or in industrial processes are of considerable engineering interest
An isothermal ammonia jet discharged to an air atmosphere was studied
LES_V, an ammonia jet in air atmosphere was simulated considering different gas density in the mixture, viscosity is a function of the temperature and other transport properties are computed through constant Prandtl and Schimdt numbers
Summary
NUMERICAL CONSIDERATIONSThe study of accidental atmospheric jet releases of toxic gases together with its subsequent dispersion and the mixing of gases in combustion or in industrial processes are of considerable engineering interest. The main goal of this work is to investigate the effect of variable density and transport properties in the turbulence development and intensity through the inertial zone.
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