Vortex sheddings from eight prisms having different cross-sections but a common height in transonic flows

Summary

The present study is concerned with an experimental investigation to assess the performance of eight prisms having different cross-sections but a common height as a vortex generator in transonic flows. It is found that the local pressure rate$\dot p$ (pressure per unit time) caused by each prism depends on the cross-section strongly. The pressure rate$\dot p$ due to one prism that has reversed triangular cross-section with forward facing step is the greatest among the present eight prisms, while the pressure rate$\dot p$ due to another prism that has ordinary triangular cross-section with backward facing step is the smallest: as a vortex generator, the former prism shows the highest performance among the present eight prisms, while the latter prism the lowest.