Theoretical Prediction of Pressure Fluctuations in a Diffuser Pump based on Rotor-Stator Interaction Analysis

基于转子-定子相互作用分析的扩压泵压力波动的理论预测

• 批准号: 09450081
• 负责人: TSUKAMOTO Hiroshi
• 金额: $ 8万
• 依托单位: KYUSHU INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09450081/
• 关键词: Diffuser Pump; Pressure Fluctuation; Rotor-Stator Interaction; Unsteady Flow; Rotor-Stator Flow Analysis; Viscous Flow Analysis; CFD; Unsteady hydraulic Force; 動静翼流解析

Two-dimensional and three-dimensional, unsteady Reynolds-averaged navier-Stokes (RANS) equations with standard k-e turbulence models were solved within a whole stage of a diffuser pump to investigate pressure fluctuations due to interaction between impeller and diffuser vanes. The arbitrary sliding mesh was employed for the full solution of transient flow due to the interaction between components without approximating the blade count ratio of impeller to diffuser. In addition, two-dimensional vorticity method was applied to the whole stage of diffuser pump. The unsteady numerical results were compared with ones calculated by singularity method and experimental data. As a result of the present study, the Navier-Stokes code with the k-e model as well as vorticity method is found to be capable of predicting pressure fluctuations in the diffuser. Further, extensive numerical studies identified sources contributing to the pressure fluctuations in the diffuser, and help understand the mechanism of impeller-diffuser interactions in the diffuser pump.

采用标准k-e湍流模型，求解了扩散泵全级内二维和三维非定常reynolds -average navier-Stokes （RANS）方程，研究了叶轮与扩散叶片相互作用引起的压力波动。在不近似叶轮与扩压器叶片数比的情况下，采用任意滑动网格完全解决了部件间相互作用引起的瞬态流动问题。此外，将二维涡量法应用于扩散泵全级。将非定常数值计算结果与奇异法计算结果及实验数据进行了比较。本文的研究结果表明，结合k-e模型和涡量法的Navier-Stokes代码能够预测扩散器内的压力波动。此外，广泛的数值研究确定了导致扩散器压力波动的来源，并有助于理解扩散泵中叶轮-扩散器相互作用的机制。

项目成果

Tsukamoto, H., Uno, M., Shi, F., Gunge, N., and Inoue, N.: "Experimantal and Numerical Study of Unsteady Hydraulic Forces on Diffuser Pump Impeller"Proceedings of Fourth KSME-JSME Fluids Engineering Conference. 33-36 (1998)

Tsukamoto, H.、Uno, M.、Shi, F.、Gunge, N. 和 Inoue, N.：“扩散泵叶轮非稳态水力的实验和数值研究”第四届 KSME-JSME 流体工程会议论文集。

Shi,F.: "Numerical Studies of Effects on Flow Rate & Radial Gap on Pressure Fluctuations Downstream of a Diffuser Pump Impeller"Proceedings of The 3rd ASME/JSME Joint Fluids Engineering Conference & FED Summer Meeting/Exhibition. FEDSM99-7341. (1999)

Shi,F.：“流量影响的数值研究

Wang, H.: "Numerical Analysis of Pressure Fluctuation due to Roter-Stator Interaction in a Diffuser Pump by Vortex Method"Proceedings of 20th IAHR Symposium. (2000)

Wang, H.：“利用涡流法对扩散泵中转子-定子相互作用引起的压力波动进行数值分析”第 20 届 IAHR 研讨会论文集。

Wang,H.: "Numerical Analysis of Pressure Fluctuation due to Rotor-Stator Interaction in a Diffuser Pump by Vortex Method"Proceedings of 20th IAHR Symposium. (2000)

王红：“涡流法对扩散泵中转子-定子相互作用引起的压力脉动的数值分析”第20届IAHR研讨会论文集。

Wang, H., and Tsukamoto, H.: "Numerical Analysis of Pressure Fluctuation due to Rotor-Stator Interaction in a Diffuser Pump by Vortex Method"Proceedings of 20^<th> IAHR Symposium. (2000)

Wang, H. 和 Tsukamoto, H.：“利用涡流法对扩散泵中转子-定子相互作用引起的压力波动进行数值分析”第 20 届 IAHR 研讨会论文集。