What is it about?
We investigate the effectiveness of the slotted vortex generator, a relatively new concept, in reducing flow-separation due to oblique shock/boundary-layer interaction in a Mach 4.0 intake.
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Why is it important?
Although a lot of numerical studies have investigated flow-separation control using vortex generators in SBLIs, most of these have used idealized domains (rectangular) with a primarily 2D flow in the absence of the vortex generator. We try to see how effective the vortex generator is in a realistic setting, especially in the presence of sidewall boundary layers, and try to find the best position of the VG along the length and span of the intake.
Perspectives
I believe this work throws important light on the optimal use of vortex generators as a flow control device in a realistic setting. It shows that the optimal device spacing determined through studies that use idealized domains with periodic boundary conditions along the span may not be suitable in a real inlet as the width of the inlet and the presence of the sidewall boundary layers play an important role.
Santanu Ghosh
Indian Institute of Technology Madras
Read the Original
This page is a summary of: Flow Control in Mach 4.0 Inlet by Slotted Wedge-Shaped Vortex Generators, Journal of Propulsion and Power, November 2017, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/1.b36314.
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