Modification of the bow shock shape and thermal effects with MHDactuator in supersonic low pressure plasma flows

Viviana Lago, Hugo Noubel, Creange Mélodie, Jaegly Jonathan, Prezeau Juliette

DOI Number XXX-YYY-ZZZ

Conference Number HiSST-2022-414

This experimental work concerns the ability to modify the bow shock of a Soyuz-type model with an
MHD actuator in supersonic and low-density plasma flows. A neodynium magnet inserted into the model
creates a magnetic shield on the front side of the model. For comparison, an identical model is used to
analyse the generic shock wave under similar operating conditions. Visualization and analysis of the
shock wave shape was performed using images of the flow field obtained with an iCCD camera. The
temperature of the wall model was measured simultaneously with an IR thermal camera. To investigate
the influence of the plasma chemical composition, measurements were made in argon and air plasma
streams. The results show that the MHD actuator increases the thickening and distance of the shock
wave. The wall temperature of the model is therefore also changed. The rate of temperature increase
is slower, which leads to lower values for the maximum temperature reached. Nevertheless, differences
were observed depending on the nature of the chemical plasma.

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Bow shock modification, Low pressure, MHD experiments, Plasma Flow, supersonic

In Categories: High-Speed Aerodynamics and Aerothermodynamics, HiSST 2022

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