Abstract

This paper presents numerical simulations of turbulent mixing of a jet in crossflow. The testcase is chosen to resemble the scalar mixing processes in the premixing zones of gas turbine combustion chambers. Unsteady simulations employing two different computational approaches are presented: unsteady Reynolds-Averaged Navier-Stokes (URANS) and Large-Eddy Simulations (LES). Presented results comprise the (time-averaged) profiles of flow velocities, the turbulent kinetic energy of the flow, Reynolds stresses, passive scalar distribution, turbulent scalar fluxes, and the turbulent scalar variance. All presented results are directly validated against experimental data. A parametric study related to the dependence of the scalar mixing predictions on the turbulent Schmidt number value for both URANS and LES is presented. The effective values of the turbulent scalar diffusivity predicted by both simulation methods are evaluated.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.