Effects of Casing Geometry on Inlet Backflow

摘要

In most cases, an inducer is placed upstream of the main impeller to improve the cavitation performance of the turbopump at liquid rocket engines. A backflow occurs at the inlet of the inducer and may affect cavitation instabilities such as cavitation surge and rotating cavitation. Based on this view, the effects of casing geometries on inlet backflow are investigated by CFD simulation using a commercial CFD code, CFX-TASC flow.