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Method for predicting energy performance of pump through adjustable guide vane on basis of CFD

A performance prediction, energy technology, used in special data processing applications, instruments, electrical digital data processing, etc.

Inactive Publication Date: 2015-05-20
YANGZHOU UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the patent of this invention is to solve the problems existing in the above-mentioned technologies, and to provide a simple and reliable method for predicting the energy performance of pumps based on CFD adjustable guide vanes, which mainly solves three problems: Numerical calculation method of energy performance; ② Solve the technical strategy of how to expand the sample number of pump energy performance database; ③ Establish a simple and convenient mathematical model of adjustable guide vane to pump energy performance

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  • Method for predicting energy performance of pump through adjustable guide vane on basis of CFD
  • Method for predicting energy performance of pump through adjustable guide vane on basis of CFD
  • Method for predicting energy performance of pump through adjustable guide vane on basis of CFD

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Embodiment Construction

[0042] The present invention will be further elaborated below in conjunction with the accompanying drawings and embodiments. A flow chart of CFD-based adjustable guide vane prediction of pump energy performance is as follows: figure 1 shown.

[0043] Firstly, mathematical modeling is carried out for pumps with different adjustable guide vane placement angles, CFD numerical solution is performed on the mathematical model, and the reliability of the numerical results is verified by using the independence of pump energy performance and test results, and then the pump in step ① The pump head and pump efficiency calculation formula predicts the pump flow rate, pump head and pump efficiency, and uses the self-edited Visual Fortran program in step ② to draw the energy performance comprehensive characteristic curve of the pump, such as figure 2 shown. Output the specified number of pump energy performance data samples through the self-edited Visual Fortran program in step ②, use the...

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Abstract

The invention relates to a method for predicting the energy performance of a pump through an adjustable guide vane on the basis of computational fluid dynamics (CFD), and belongs to the technical field of water conservancy projects and mechanical engineering. The method is characterized by specifically including the following steps of firstly, establishing an energy performance database of a pump at different adjustable guide vane installation angles by calculating the numerical value of the CFD; secondly, drawing the comprehensive characteristic curve of the pump at different adjustable guide vane installation angles and outputting a number of energy performance data of the pump at different adjustable guide vane installation angles during calculation of the numerical value of the CFD on the basis of a Visual Fortran program; thirdly, establishing a mathematical model for predicting the energy performance of the pump through the adjustable guide vane. The method is easy and convenient to implement and reliable.

Description

technical field [0001] The invention relates to a method for predicting the energy performance of a pump based on CFD (Computational fluid dynamics) by adjustable guide vanes, and belongs to the technical fields of hydraulic engineering and mechanical engineering. Background technique [0002] The average installation efficiency of large-scale irrigation and drainage pumping stations in my country is only 40% to 50%, and the average unit energy consumption is 7 to 8kW h / (kt m), and the pump installation efficiency is far from the "Code for Design of Pumping Stations" (GB50265-2010 ) in section 9.1.11 of the pump device efficiency requirements are quite different, and the actual operating conditions of many pump stations seriously deviate from the design conditions. The measure of installing adjustable guide vanes is to adjust the operating conditions of the pump device so that the pump device can operate within a high-efficiency range. According to the research results of sch...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 杨帆刘超周济人王芃也邵正杰
Owner YANGZHOU UNIV
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