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首页> 外文会议>International Conference on Fluid Power Transmission and Control(ICFP' 2005); 20050405-08; Hangzhou(CN) >Numerical Simulation and Experiments on the Flow in a Multistage Centrifugal Pump
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Numerical Simulation and Experiments on the Flow in a Multistage Centrifugal Pump

机译：多级离心泵内流动的数值模拟与实验

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摘要

In this paper, a numerical simulation of the first stage of a multistage centrifugal pump, consisting of an impeller, a diffuser and a return channel, is performed by the commercial software CFX-5. The obtained simulation results are compared with experiments, which are done in a test facility which has been especially prepared for optical flow measurements. For the numerical simulation, a structured grid for the impeller part is created by CFX-TurboGRID and a structured grid for the diffuser and the return channel is obtained by applying the grid generator ICEM-CFD. Then, the Reynolds Averaged Navier-Stokes (RANS) equations are solved by the software CFX-5 with a stage interface between rotating and stationary frames. For the stage interface, the flow behind the impeller is averaged circumferentially to be the inflow conditions of the diffuser blades. In order to validate the numerical simulation results, experiments are designed and conducted by Laser Doppler Velocimetry (LDV) in the diffuser region. The experimental investigations support the simulation results and CFX-5 is proven to be capable of capturing the existing flow phenomena under the given constraints.
机译：在本文中，由商用软件CFX-5对由叶轮，扩散器和返回通道组成的多级离心泵的第一级进行了数值模拟。将获得的仿真结果与实验进行比较，这些实验是在专门为光流量测量准备的测试设备中完成的。对于数值模拟，通过CFX-TurboGRID创建用于叶轮部件的结构化网格，并通过应用网格生成器ICEM-CFD获得用于扩散器的结构化网格和返回通道。然后，使用软件CFX-5求解雷诺平均Navier-Stokes（RANS）方程，并在旋转框架和固定框架之间建立平台接口。对于级接口，叶轮后面的流量在周向上平均，以作为扩散叶片的流入条件。为了验证数值模拟结果，在扩散器区域中设计并进行了激光多普勒测速（LDV）实验。实验研究支持了仿真结果，CFX-5被证明能够在给定的约束下捕获现有的流动现象。

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