... 01 2024 01 06 2024 29 08 2024 flow-induced excitation rotor-stator interaction (RSI) turbulent kinetic energy (TKE) wake-jet flow pressure pulsation hydrodynamic design National Natural Science Foundation of China 10.13039/501100001809 U23B20107...

...Yanpi Lin; Xiaojun Li; Bowen Li; Xiaoqi Jia; Zuchao Zhu The high-speed rotation of impellers leads to strong rotor–stator interaction, which mainly causes the pressure pulsation of centrifugal pumps. An impeller with a bionic sinusoidal tubercle trailing edge (STTE) can reduce the intensity...

...Baoling Cui; Yingbin Zhang; Yakun Huang Unsteady pressure pulsation and fluid force induced by flow instabilities in the centrifugal pump is an important cause of vibration, which is detrimental to the safe operation of the pump. In this study, we numerically investigated the pressure pulsation...

... the unstable flow and vibration in a centrifugal pump. Based on the large eddy simulation (LES) and fluid–solid coupling method, the transient pressure pulsation, unstable flow structure, and vibration displacement of a centrifugal pump were investigated with different cutting angles of the trailing edge under...

... of the internal energy loss of a centrifugal pump, and this energy dissipates mainly to the surroundings of the pump in the form of pressure pulsation and vibration. In this study, to effectively understand the hydraulic behavior and energy loss in a centrifugal pump, the energy losses in the pump were...

..., there are severe pressure pulsation and cavitation in pump-turbines. However, their generation mechanism has not been determined yet. This work contributes to the numerical simulation of the transient behaviors in a prototype pump-turbine during the load rejection process with special emphasis on cavitation effect...

... performance and the pressure pulsation characteristics of the centrifugal pump but also reduces the vibration intensity. The structural shape and size of the impeller remain unchanged, while the 3D-gap blades are reconfigured. By comparing with the conventional impeller (hereinafter referred to as Con...

... vanes (MGVs) are widely used to control the stability in the S region. There have been experimental investigations and computational fluid dynamics (CFD) simulations of scale models with aligned guide vanes and MGVs with spectral analyses of the S curve characteristics and the pressure pulsations...