Publication de 6 numéros par an
ISSN Imprimer: 1940-2503
ISSN En ligne: 1940-2554
Indexed in
NUMERICAL STUDY OF NON-REACTIVE CONFINED THERMAL JET WITH VARIABLE DENSITY
RÉSUMÉ
This study deals with the density impact on the turbulence's structure in a confined and mobile atmosphere with slow velocity. The variable density is gotten by heating or cooling the air jet, expending in an atmosphere at ambient temperature. The jet temperature is regulated in order to relate the similar density Rρ to the mixed jet (CO2/air, air/air, CH4/air, and He/air). The finite volume method is adopted for the numerical resolution of elliptic equations governing these flows. The standard (k-ε) turbulence model is used. The computational predictions are compared with experimental observations in order to validate the mathematical model. There is no large difference between the computed average variables and those of experimental results. Also, different injection ratios are used in order to find a good correlation between a limit of the potential core and the density ratio.