banner.jpg 075 CFD Analysis of Passive Flow Control Devices for Hypersonic Flow M. Gogoia, A. Pavanb, A. Mogrekarc, T. Meenakshid and R. Sivakumare School of Mechanical and Building Sciences, VIT Chennai, India. amadhurjya.gogoi2013@vit.ac.in bpavan.a2013@vit.ac.in cmogrekar.ashish2012@vit.ac.in dmeenakshi.t@vit.ac.in esivakumar.r@vit.ac.in ABSTRACT

The objective of this paper is to do a comparative study of passive flow control devices belonging to Micro Vortex Generator (MVG) family, namely micro ramp, thick vane and split ramp. To assess the effectiveness in controlling shockwave boundary layer interaction (SBLI), analysis is being done. Flow behavior downstream of the devices and control of turbulent boundary layer separation due to the effect of MVG wake is studied at a high Mach number of 5, which comes under hypersonic flow regime. SBLI effects are crucial for the performance of air breathing propulsion vehicles due to some undesirable phenomena like adverse pressure gradient, flow separation and flow distortion. This study will help to understand the flow physics on hypersonic regime and effectiveness of various MVG geometries.

Keywords: SBLI, Micro ramp, Thick vane, Split ramp, Hypersonic, CFD.

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