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Numerical Simulation and Optimzation of the Flow Field for 150S-50 Double Suction Centrifugal Pump

Author: MaoPengZhan
Tutor: ZhangShuJia
School: Zhejiang University of Technology
Course: Solid Mechanics
Keywords: Centrifugal pumps Numerical Simulation Optimization The objective function Genetic Algorithms
CLC: TH311
Type: Master's thesis
Year: 2010
Downloads: 93
Quote: 2
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Abstract


Centrifugal pump is an extremely wide range of applications counterattack hydraulic machinery, has been widely used in power generation, mining, metallurgy, iron and steel, machinery, paper, construction, aerospace and other fields, in the national economy plays an extremely important role. Over the past decade, based in computational fluid dynamics CFD simulation technology has been successfully used to simulate turbulent motion inside the pump. CFD simulation technology is not only reveal the internal flow field characteristics Fluid Machinery effective tool, but is a fluid mechanical products to shorten product development cycles and effective means of improving performance, has become the fluid mechanical CAD-aided design of a new direction. The main research work includes: 1. After reviewing extensive literature on the basis of an overview of the development process as well as computational fluid dynamics CFD numerical simulation technology in the numerical simulation of internal flow centrifugal pump applications, and pointed out that the current deficiencies and development orientation. 2 In the analysis and comparison of numerical simulation of flow field in centrifugal various turbulence models and calculation methods, based on the model proposed for this centrifugal flow field numerical simulation of turbulent coupling model and numerical method, constructed through three-dimensional modeling software PROE the 150S-50 double suction centrifugal pump hydraulic model of the machine, the use of pre-processing tools GAMBIT CFD model of the three-dimensional mesh, and through the commercial CFD software Fluent achieve the centrifugal machine unsteady numerical simulation. 3 In the comparative analysis of centrifugal disk friction loss and volume loss calculation method based on the use of different correction scheme for the numerical simulation results corrected, obtained under different conditions centrifugal pump performance parameters. To the pump test data as the basis to compare different correction method precision obtained to determine the paper studied double suction centrifugal correction formula calculation results. After drawing the pump characteristic curve, and in-depth analysis of the impeller and the volute flow field. 4 Through the numerical simulation results and centrifugal flow field analysis, optimization of the pump, the pump is a performance optimization, the optimization process, proposed the establishment of the impeller hydraulic loss of function of objective optimization method We construct an objective function and the constraint optimization, based on genetic algorithm, using matlab programming, optimization objective function for optimization calculations, the optimized centrifugal key parameters, and then re-create the three-dimensional model, and through unsteady numerical simulation tools have been tested for optimal results. The results show that the energy optimization objective has been achieved, the pump of the performance indicators meet the design requirements.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Pump > Vane pump > Centrifugal pump
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