...Jiahao Lu; Ran Tao; Di Zhu; Ruofu Xiao Purpose This study focuses on the CFD numerical simulation and analysis of the vortex stacking problem at the top of the impeller of a high-speed fuel pump, mainly using LCS and entropy production theory to visualize the vortex at the top of the impeller...

... of velocity moment based on the Oseen vortex is proposed to describe the flow pattern downstream the IGVs. Prediction model Centrifugal pump Inlet guide vanes (IGVs) Controllable velocity moment Vortex Once the equation (1) is solved, the flow net on meridional plane can be obtained...

... with increasing distance in the radial direction. The shear layer vortices, which arise from the Kelvin-Helmholtz instability near the jet exit, become larger scale results in the entrainment and vortex pairing, and breakdown when the jet approaches the wall. Near the wall, the vortex swirling direction...