Colloquium: Lars Lodder (AWEP)

16 juli 2020 09:30 - Locatie: Meeting Room 1, Faculty of Aerospace Engineering, Kluyverweg 1, Delft

Investigation of Hypersonic Transitional Shock Wave Boundary-Layer Interactions

During reentry of  lifting space vehicles a large range of Reynolds numbers are encountered on the control surfaces. As a result, transitional shock wave boundary-layer interactions can form in front of the control surfaces. It is known that these interactions create very high aerodynamic heating on the structure.

The effects of these transitional shock wave boundary-layer interactions on the flow topology and aerodynamic heating are investigated using various compression ramps on a large flat plate. This creates a shock wave boundary-layer interaction with clear transitional structures. Schlieren imaging is used to get more insight on the separation length, separation angle and growth rate of the transitional structures. Next to that, a Quantitative InfraRed Thermography study is performed to investigate the aerodynamic heating on the compression ramps. Overall a good overview of the features found in a transitional shock wave boundary-layer interaction is obtained.