Numerical simulation and optimization of pulp pump

Asian Working Group- IAHR's Symposium on Hydraulic Machinery and Systems

Li, Cao^1 ; Qihua, Zhang^1 ; Zhaoxu, Yan^1 ; Weidong, Zhang^1

National Research Center of Pumps, 301 Xuefu Road, Zhenjiang

212013, China^1

关键词: Commercial packages;    Impeller inlets;    Outlet angle;    Outlet blade angle;    Pulp and paper;    Pump performance;    Simulation and optimization;    Transportation process;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/163/1/012053/pdf
DOI  :  10.1088/1755-1315/163/1/012053

来源: IOP

【 摘 要 】

Pulp pump plays an important role in the transportation process of pulp and paper making industry. A CFD based investigation toward pump performance optimization was performed by using the commercial package CFX15.0. To improve accuracy, the grid irrelevance was examined by employing different mesh sizes. In addition, the simulations were performed at steady state with the RNG k- model. The comparisons between numerical and experimental results of the originally designed pump were further analyzed. it was showed that the head and efficiency were much lower than the expected performances. To optimize the pump performance, the Design of Experiments (DOE) method was further applied to improve the originally designed pump. The experiments with different outlet blade angles, impeller suction eye diameters, and volute widths were conducted. The results showed that the performance of the pump with smaller impeller inlet diameter and smaller volute inlet width was comparatively better. In addition, the head and efficiency was increased a little by increasing the blade outlet angle appropriately.