Influence of Rotor-Stator Interaction on Flow Stability in Centrifugal Pump Based on Energy Gradient Method
Influence of Rotor-Stator Interaction on Flow Stability in Centrifugal Pump Based on Energy Gradient Method
复制标题
基于能量梯度法的转子定子相互作用对离心泵流动稳定性的影响
DOI：
10.1515/tjj-2015-0046
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Cui Baoling
中科院分区：
文献类型：
--
作者：
Zheng Lu-Lu;DOU Huashu;Jiang Wei;Chen Xiaoping;Zhu Zuchao;Cui Baoling
摘要通过求解雷诺平均Navier-Stokes方程和RNG k-ε湍流模型，对离心泵内部的三维湍流流场进行了数值模拟。采用有限体积法和SIMPLE算法对系统进行求解。通过仿真计算得到了不同叶片角位置下离心泵的各项参数。采用能量梯度法分析了叶栅内部流场结构，计算了不同叶片角位置下能量梯度函数K的分布。根据能量梯度法，K值较大的位置更容易引起不稳定，湍流强度也更高。结果表明，在K值较大的舌部附近，流动不稳定性更容易被激发。舌部附近的不稳定流动区域也与速度迅速下降的区域一致。速度的突变是导致K值较大的主要原因。研究结果还表明，凸舌只对通过凸舌的叶轮流道有较大的影响。
Abstract Numerical simulation is performed for the three-dimensional turbulent flow field in a centrifugal pump by solving the Reynolds-averaged Navier-Stokes equations and the RNG k-epsilon turbulent model. The finite volume method and the SIMPLE algorithm are employed for the solution of the system. All the parameters in the centrifugal pump at different blade angular positions are obtained by simulation. The flow structure is analyzed and the distributions of the energy gradient function K are calculated at different blade angular positions based on the energy gradient method. According to the energy gradient method, the location which has larger value of K is easier to cause instability and to be of high turbulence intensity. The result shows that the flow instability is easier to be excited nearing the tongue where the value of K is large. The unstable flow area nearing the tongue is also in agreement with the zone where the velocity decreases rapidly. The sudden variation of velocity contributes to the large value of K. The research result also indicates that the tongue has large impact only on the impeller passages passing the tongue.
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影响因子：
2
作者：
Jorge L. Parrondo-Gayo;José González-Pérez;J. Fernandez-Francos
通讯作者：
Jorge L. Parrondo-Gayo;José González-Pérez;J. Fernandez-Francos
DOI：
10.1016/j.ijnonlinmec.2005.12.002
发表时间：
2006-05-01
影响因子：
3.2
作者：
Dou, Hua-Shu
通讯作者：
Dou, Hua-Shu
影响因子：
2
作者：
R. Barrio;E. Blanco;J. Parrondo;J. González;Joaquín Fernandez
通讯作者：
R. Barrio;E. Blanco;J. Parrondo;J. González;Joaquín Fernandez
DOI：
10.1142/s0217984910023815
发表时间：
2009-06
期刊：
arXiv: Fluid Dynamics
影响因子：
--
作者：
H. Dou;B. Khoo
通讯作者：
H. Dou;B. Khoo
影响因子：
2
作者：
G. Wuibaut;G. Bois;P. Dupont;G. Caignaert;M. Stanislas
通讯作者：
G. Wuibaut;G. Bois;P. Dupont;G. Caignaert;M. Stanislas