NUMERICAL STUDY OF ELLIPTIC AND COAXIAL JETS WITH VARIABLE DENSITY

Abstract

In the present study, the effects of inlet elliptic and coaxial jet geometry on the mixing process with large density differences has been investigated numerically. The coaxial jets are produced through circular and elliptic nozzles. The elliptic and circular nozzles have approximately the same exit area. A second-order Reynolds stress model (RSM) is used to investigate variable density effects in coaxial turbulent jets. Comparative studies are presented for the calculations of the variables. The results indicate that the elliptic coaxial geometry noticeably enhances mixing in comparison with the circular case.

DOI: http://dx.doi.org/10.5755/j01.mech.18.5.2693