Noah Schwalb

Date of Award


Document Type


Degree Name

Master of Science (MS)


Mechanical and Aerospace Engineering

Committee Chair

Abdelkader Frendi

Committee Member

Sarma Rani

Committee Member

Sivaguru Ravindran

Research Advisor

Abdelkader Frendi


Turbulence--Mathematical models, Supersonic aerodynamics, Navier-Stokes equations, Blended PANS (BPANS) model


The Partially-Averaged Navier-Stokes (PANS) methodology is applied to variable-density flow to derive the Blended PANS (BPANS) model. A supersonic jet-in-crossflow problem is numerically simulated using the BPANS model to show its capabilities in a variable-density flow with complex physics. The shock systems and vortex structures of this problem observed during experiments are numerically reproduced. The time-averaged Mach number and streamwise velocity contours show good agreement compared to LES and experimental data. The streamwise and wall-normal velocity profiles, wall pressure distribution along the flat plate, and trajectory of the jet are compared to LES and experimental data to show that BPANS accurately predicts them. The filter control parameter fk is varied to show the effect of the unresolved to resolved ratio of the turbulent kinetic energy k and the specific dissipation rate ω. The results show that smaller fk results in better agreement with LES and experimental data near local extrema.



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