Author/Authors :
Yu, L State Key Laboratory of Hydroscience and Engineering Laboratory - Department of Energy and Power Engineering - Tsinghua University, Beijing, Beijing, China , Zhang, H. C State Key Laboratory of Hydroscience and Engineering Laboratory - Department of Energy and Power Engineering - Tsinghua University, Beijing, Beijing, China , Chen, H Xi’an Aerospace Propulsion Institute, Xi’an, Shanxi, China , Li, Y. P Xi’an Aerospace Propulsion Institute, Xi’an, Shanxi, China , Zuo, Z. G State Key Laboratory of Hydroscience and Engineering Laboratory - Department of Energy and Power Engineering - Tsinghua University, Beijing, Beijing, China , Liu, S. H State Key Laboratory of Hydroscience and Engineering Laboratory - Department of Energy and Power Engineering - Tsinghua University, Beijing, Beijing, China
Abstract :
It is known that rotating cavitation (RC) characteristic of an inducer can greatly influence the safe and stable
operation of a liquid rocket. In this paper, the possibility of geometrically optimizing an inducer with respect
to RC generated radial forces was discussed. The characteristics of the inducer was firstly evaluated through
computational fluid dynamics (CFD), which was validated against experimental results. Then by employing
an orthogonal experiment combined with CFD, influences of geometric parametric combinations on RC were
investigated. Primary influencing factors and the best parametric combination have been obtained through a
variance analysis. Comparing with the original inducer, a significant improvement in the cavitation
performance, as well as the radial force characteristic of the optimized inducer has been achieved. Pressure
distribution on the blades have been analyzed to reveal the related flow mechanism. This work provides a
feasible and effective route in engineering practice to optimize the characteristic of RC generated radial forces
for an inducer.
Keywords :
Radial force characteristic , Rotating cavitation , Orthogonal experiment , Geometrical optimization , Inducer
