Accession Number:

ADA611414

Title:

Numerical and Experimental Investigation of Confined Turbulent Multiple Transverse Jets

Descriptive Note:

Technical paper, Jun-Jul 2014

Corporate Author:

AIR FORCE RESEARCH LAB EDWARDS AFB CA ROCKET PROPULSION DIV

Personal Author(s):

Report Date:

2014-06-01

Pagination or Media Count:

10.0

Abstract:

The flow and mixing properties of confined transverse jets are relevant to a myriad of combustion devices ranging from propulsion to energy generation and chemical processing. The current effort focuses on understanding the mixing process between a transverse jet mixing in a confined system. The current study involves the simulation of a single confined transverse jet configuration under matched conditions of a companion experiment. The main flow Reynolds number considered is in the range of 25000-53000 and the jet-to-main flow momentum flux ratio is varied from 3.2-14.3. The momentum and scalar mixing is investigated through the solution of the Reynolds-Averaged Navier Stokes RANS equations. The mean scalar mixing characteristics are compared to experimental data. The turbulence model that is used is the low Reynolds number k-epsilon model. Due to demonstrated symmetry, only a one-half section of the geometry is considered. All numerical simulations capture salient flow structures such as the counter-rotating vortex pair CRVP. The current investigation shows the numerical simulations predict the experimental data with a good degree of accuracy.

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE