Effect of geometry on the downstream flow topology of a micro ramp in a supersonic turbulent boundary layer

An experimental study

Conference paper (2017)

Authors

S.S. Tambe Flight Performance and Propulsion - Aerospace Engineering
F.F.J. Schrijer Aerodynamics - Aerospace Engineering
B.W. van Oudheusden Aerodynamics - Aerospace Engineering
Research Group
Flight Performance and Propulsion (Aerospace Engineering) (TU Delft)
Copyright: © 2017 S.S. Tambe, F.F.J. Schrijer, B.W. van Oudheusden
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Published Date

2017

Language

English

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Faculty

Aerospace Engineering

Department

Flow Physics and Technology

Research Group

Flight Performance and Propulsion

Abstract

The physical relation between the geometry and the flow topology of the wake of a micro ramp is investigated by means of a parametric study. Various micro ramp geometries are placed in a supersonic turbulent boundary layer at a free-stream Mach number of 2. The flow field is measured with schlieren and Particle Image Velocimetry (PIV). The effect of geometry on different aspects of the flow field is studied and from this a physical model of the flow phenomena is formulated. This model includes the concept of captured momentum, a simplified expression which allows relating the geometrical features to vortex circulation and from this a new scaling factor is proposed. The physical model is validated with the experimental data.