Abstract:In order to study the applicability of eddy viscosity turbulence model and Reynolds stress turbulence model in head prediction accuracy for centrifugal pumps, the heads of 10 specific speed centrifugal pumps were predicted under three different discharges(0.3Q, 1.0Q, 1.2Q)by using CFX 14.0 version of eddy viscosity model and Reynolds stress model. The predicted values were compared with the test values. The results indicated that as for the low specific speed centrifugal pump we recommended Reynolds stress BSL-EARSM model for 0.3Q. For head prediction of the discharge(1.0Q), the BSL-RS model, compared with the commonly used RNG k-ε, k-ω model, has higher prediction accuracy. When using the eddy viscosity class model to forecast the head of 1.0Q, the predicted values are less than the test values. For the head forecast at ns larger than 103, the simulation values are less than the test values. Researches provide reference for improving head prediction accuracy for centrifugal pumps.
杨兴标, 李红, 陈超. 湍流模型对离心泵扬程预测准确性的影响[J]. 排灌机械工程学报, 2015, 33(8): 656-660.
Yang Xingbiao, Li Hong, Chen Chao. Influence of turbulence models on head prediction accuracy for centrifugal pumps. Journal of Drainage and Irrigation Machinery Engin, 2015, 33(8): 656-660.
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