A5025391600- Cavitation Phenomena in Pumps
- Hydraulic and Pneumatic Systems
- Fluid Dynamics and Vibration Analysis
- Fluid Dynamics Simulations and Interactions
- Turbomachinery Performance and Optimization
- Fluid Dynamics and Turbulent Flows
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Vibration and Dynamic Analysis
- Particle physics theoretical and experimental studies
Yangzhou University
2023-2024
Stall and jet-wake flow are two typical forms of unstable phenomena in centrifugal pumps, significantly affecting their stability. This paper investigates the interaction mechanisms between stall a impeller under different working conditions. The unsteady numerical study utilizes partially averaged Navier–Stokes (PANS) model with new dynamic fk expression derived from rotation-corrected energy spectrum. results reveal four stages field evolution pump In stage I, no vortices present, occurs....
This paper investigates the effects of non-uniform inflow on internal and external characteristics an axial-flow pump. Numerical simulation is employed to study two different configurations: one with intake sump (referred as system) another without pump system), where introduces conditions. First, under low flow conditions, typical unstable phenomena are observed in impeller, including leading edge spillage tip leakage vortex, which consistent previous research findings. Second, analysis...
The alteration of physical properties in cavitating flows due to phase transition presents challenges for accurately expressing turbulent viscosity Reynolds-Averaged Navier–Stokes models. Addressing this issue is crucial capturing flow characteristics effectively. This study introduces a modification by considering the compressibility vapor–liquid mixture, applied within k-omega Shear-Stress Transport (SST k−ω) model framework. Simulations around Clark-Y hydrofoil, National Advisory...