Experimental Study on Unsteady Cavitating Flow and Its Instability in Liquid Rocket Engine Inducer

To study instability in the unsteady cavitating flow a liquid rocket engine inducer, visualization experiments of non-cavitating and flows inside model inducer were carried out at different conditions. Visual to capture evolution three-bladed by using high-speed camera. The external characteristic performance, cavitation pressure pulsation analyzed based on observation non-cavitation development their instabilities. Under conditions, change rate has significant impact characteristics inducer. occurrence aggravated caused intensity each measuring point increase. This structure strong instability, tail region is often accompanied shedding clouds perpendicular blade surface.