水机电共同作用的离心泵内部非定常流动分析

发布时间：2018-10-14 12:59

【摘要】：为得到准确的离心泵非定常负载转矩,以型号为IS65-50-160-00的离心泵和Y160M-2B3的三相异步电动机为研究对象,首先采用Fluent和Matlab对模型离心泵和电动机进行联合仿真.基于TCP/IP通信协议设计了C++源程序作为软件通信的接口程序,建立了双向同步耦合仿真平台,实现了离心泵内部流动非定常求解过程中的转速和转矩数据传输.研究结果表明:定转速计算时,在设计工况下,扬程计算相对误差为8.66%,效率计算相对误差为5.24%;变转速计算时,在设计工况下,扬程计算相对误差为2.45%,效率计算相对误差为2.47%;采用联合仿真方法进行数值模拟,考虑了电动机对泵运行的影响以及转速变化的实际情况,比传统方法更加准确地预测出离心泵的外特性,数值计算结果可靠.Fluent/Matlab联合仿真技术为今后深入研究离心泵内部流动非定常特性提供新方法.
[Abstract]:In order to obtain accurate unsteady load torque of centrifugal pump, the model centrifugal pump and Y160M-2B3 three-phase asynchronous motor are taken as the research object. Firstly, the model centrifugal pump and motor are simulated by Fluent and Matlab. Based on the TCP/IP protocol, the C source program is designed as the interface program of software communication, and the bidirectional synchronous coupling simulation platform is established. The speed and torque data transmission in the unsteady solution of the flow inside the centrifugal pump is realized. The results show that the relative error of head calculation is 8.66, the relative error of efficiency calculation is 5.24 in the design condition, and the relative error is 5.24 in the variable speed calculation. The relative error of head calculation is 2.45 and the relative error of efficiency calculation is 2.47.The combined simulation method is used to carry out numerical simulation, considering the effect of motor on pump operation and the actual situation of speed change. Compared with the traditional method, the external characteristics of centrifugal pump are predicted more accurately, and the results of numerical calculation are reliable. The Fluent/Matlab combined simulation technology provides a new method for the further study of the unsteady characteristics of the flow inside the centrifugal pump.
【作者单位】：江苏大学国家水泵及系统工程技术研究中心;
【基金】：国家自然科学基金资助项目(51409125) 中国博士后科学基金资助项目(2014M551515) 江苏省高校自然科学基金资助项目(14KJB470002)
【分类号】：TH311

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