Abstract
Abstract
To elucidate the role of the Hall effect in magnetohydrodynamic (MHD) aerobraking in
rarefied flows,we measured the radial distributions of electron temperature and density in front
of a magnetized model in a rarefied argon arcjet wind tunnel using the laser Thomson scattering
method. We also developed a water-cooled magnetized model to prevent thermal demagnetization
during the measurement. The measured electron density
distributions were in
excellent agreement
with computational fluid dynamics (CFD) predictions. It was also found that the magnetic field had
little effect on the electron density distribution around the model. In the case without the
magnetic field, the measured electron temperature almost agreed with the CFD prediction. However,
the measured electron temperature increase caused by applying the
magnetic field was about
1,000 K less than that of the CFD prediction. This discrepancy indicates that the location of
an insulating boundary in the plasma is far from the model.