DocumentCode :
3593107
Title :
Analysis of cavitation behavior in a residual heat removal pump
Author :
Feng Hong ; Jianping Yuan ; Banglun Zhou
Author_Institution :
Nat. Res. Center of Pumps, Jiangsu Univ., Zhenjiang, China
fYear :
2014
Firstpage :
1
Lastpage :
7
Abstract :
The hydraulic performances as well as the cavitation phenomena in a scaled residual heat removal pump were investigated by experimental and numerical methods, respectively. In particular, a three-dimensional numerical model of cavitation with the standard k-ε turbulence model was adopted to simulate the internal cavitating flow through the model pump, and a high quality polyhedral grid was generated to reduce the number of cells and better align the cell faces and flow. The hydraulic performances of the model pump predicted by numerical simulations were in good agreement with the corresponding experimental data under non-cavitation and cavitation conditions. Complicated internal flow phenomena through impellers such as formation of cavities, blade-loading under different cavitation conditions and static pressure on mid-span of impeller were investigated and discussed. Results show that low pressure generation under cavitating conditions is the main reason of cavities forming. Blade-loading distributions on pressure surface of blades show a sudden jitter near the blade leading edge. Numerical and experimental results in this paper can provide better understanding of the origin of leading edge cavitation in residual heat removal pumps.
Keywords :
blades; hydraulic systems; impellers; numerical analysis; pumps; turbulence; 3D numerical model; blade-loading distributions; blades; cavitating conditions; cavitation behavior; cavitation phenomena; cavities forming; edge cavitation; high quality polyhedral grid; hydraulic performances; impellers; internal cavitating flow; internal flow phenomena; jitter; model pump; noncavitation conditions; numerical methods; numerical simulations; pressure surface; residual heat removal pumps; standard turbulence model; static pressure; Cavitation; Experiment; Numerical Simulation; Polyhedral Grid; Residual Heat Removal Pump;
fLanguage :
English
Publisher :
iet
Conference_Titel :
Fluid Machinery and Fluid Engineering, 2014 ISFMFE - 6th International Symposium on
Print_ISBN :
978-1-84919-907-0
Type :
conf
DOI :
10.1049/cp.2014.1190
Filename :
7124111
Link To Document :
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