15 citations · 45 across the 6 of their papers we have counts for
6 papers
Investigation of Görtler vortices in high-speed boundary layers via an efficient numerical solution to the non-linear boundary region equations
Omar Es-Sahli, Adrian Sescu, Mohammed Afsar +1
Streamwise vortices and the associated streaks evolve in boundary layers over flat or concave surfaces due to disturbances initiated upstream or triggered by the wall surface. Foll…
Numerical Investigation of a Rectangular Jet Exhausting over a Flat Plate with Periodic Surface Deformations at the Trailing Edge
Colby Horner, Adrian Sescu, Mohammed Afsar +1
In an attempt to reduce jet noise, blended wing concept vehicle utilizes rectangular jet exhaust ports exiting from above the wing ahead of the trailing edge. In this study, we tak…
Investigation of wakes generated by fractal plates in the compressible flow regime using large-eddy simulations
Omar Es-Sahli, Adrian Sescu, Mohammed Z. Afsar +1
We investigate flows interacting with a square and a fractal shape multi-scale structures in the compressible regime for Mach numbers at subsonic and supersonic upstream conditions…
Modeling and prediction of the peak radiated sound in sub-sonic axisymmetric air jets using acoustic analogy based asymptotic analysis
Mohammed Z. Afsar, Adrian Sescu, Stewart. J. Leib
This paper uses asymptotic analysis within the generalized acoustic analogy formulation (Goldstein. J. Fluid Mech 488, pp. 315-333, 2003) to develop a noise prediction model for th…
Iterative control of Görtler vortices via local wall deformations
Adrian Sescu, Lamiae Taoudi, Mohammed Afsar
Görtler vortices develop along concave walls as a result of the imbalance between the centrifugal force and radial pressure gradient. In this study, we introduce a simple control s…
Hampering Görtler vortices via optimal control in the framework of nonlinear boundary region equations
Adrian Sescu, Mohammed Afsar
The control of stream-wise vortices in high Reynolds number boundary layer flows often aims at reducing the vortex energy as a means of mitigating the growth of secondary instabili…