Three-dimensional Effects on Unsteady Dynamics and Turbulent Transport Mechanisms of an Impinging Shock Wave/Boundary-layer Interaction

Speaker: Manan Vyas, NASA Glenn Research Center
June 3, 2021

Presentation

Abstract

Shock wave/boundary-layer interactions (SBLIs) are known to have detrimental effects on the performance and operability of inlets and isolators. Therefore, accurate scale-resolving simulations and predictions via Reynolds-averaged Navier-Stokes (RANS) simulations are critically important in the study of SBLIs. In this work, wall-resolved large-eddy simulation of an impinging SBLI, including the sidewalls, was performed based on the experiments performed at the Institut Universitaire des Systèmes Thermiques Industriel (IUSTI) for 8-degree wedge at Mach 2.29. The analysis identified unsteady dynamics of the reflected-shock foot, separation bubble, and corner region. Principal turbulent transport mechanisms in these phenomena were quantified by investigating the Reynolds stress transport equation. Results of this work will enable reliable scale-resolving simulations and lay the foundation for a more systematic procedure to close the RANS equations in the presence of three-dimensionality, pressure gradients, and other sources of mechanical non-equilibrium.

Biography

Manan Vyas works at NASA's Glenn Research Center in Cleveland, Ohio. He earned his Bachelor (2007) and Master (2010) of Science Degrees in Aerospace Engineering at the Embry-Riddle Aeronautical University in Daytona Beach, Florida. And obtained his Ph.D. (2021) in Aeronautical and Astronautical Engineering from the Ohio State University in Columbus, Ohio. His research interests are computational and experimental investigation of propulsion flowpath, high-speed flows, scale-resolving methods, analysis techniques for large datasets, and high-performance computing.

Seminar Participation

Attending In Person

For select seminars, you may wish to attend in-person if you are in the vicinity of NASA Ames Research Center. These AMS seminars are held in Building N258 in Room 127, just off the front lobby. Sessions available to attend in-person will be indicated in the announcement information. In-person participants without NASA badges will need a valid visitor badge (US citizenship or permanent residency is required) to enter the facility.

Join Us Online

To attend an AMS seminar, click on the Microsoft Teams link in the seminar description. You can connect through the desktop Teams App if you have it, or you can select "Watch on the Web Instead" to enter the meeting as a guest. Please ensure that you've muted your microphone in Teams before you select "Join Now" to enter the meeting lobby.