What is it about?
This research focuses on understanding in detail how the presence of a 3-dimensional object in a supersonic flow affects the flow in its vicinity. Through a parametric study, we have obtained a scaling law that gives an estimation of where the flow will separate in front of the protuberance (a class of 3-dimensional objects). This comprehensive scaling law takes into consideration different geometrical and incoming flow parameters.
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Why is it important?
It is important for the design of a component or vehicle, which operates in supersonic flow regime, to have an estimate of where the flow separates in front of it. This is because the location where the flow separates leads to the formation of separation shock. This shock is highly unsteady and causes high heat transfers and surface pressure fluctuations at the mean location. If not dealt with these detrimental effects, it can lead to reduced efficiency of the system and can even be catastrophic in some cases. Thus, through scaling law for the mean location of flow separation, we can place appropriate flow control and make design changes at these estimated locations.
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This page is a summary of: On the scaling of three-dimensional shock-induced separated flow due to protuberances, Physics of Fluids, July 2022, American Institute of Physics,
DOI: 10.1063/5.0098487.
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