Photovoltaic water pump internal flow numerical simulation method

A photovoltaic water pump and internal flow technology, applied in 3D modeling, image data processing, electrical digital data processing, etc., can solve problems such as the unstable speed of photovoltaic water pumps, and achieve accurate calculation results

Pending Publication Date: 2017-08-04
JIANGSU UNIV
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Problems solved by technology

However, the constant change of light radiation intensity leads to the instability of the speed of the photovoltaic water pump, so the traditional C

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  • Photovoltaic water pump internal flow numerical simulation method
  • Photovoltaic water pump internal flow numerical simulation method
  • Photovoltaic water pump internal flow numerical simulation method

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Example Embodiment

[0057] In order to better explain the numerical simulation method of the internal flow of the photovoltaic water pump involved in the present invention, the method of the present invention is used in conjunction with the accompanying drawings and embodiments to perform test calculations, so that the technical solution and beneficial effects are more clear.

[0058] This embodiment takes a 7-stage photovoltaic centrifugal pump with a specific speed of 133 as the research object, and the design flow rate of the pump is Q=2.5m 3 / h, head H=18.3m, rotation speed n=2850r / min, the number of impeller and guide vane blades is 6. The specific implementation steps are as follows:

[0059] Step 1. Use Creo 2.0 software to model the three-dimensional fluid model of the photovoltaic water pump. Considering that the increase in the number of impellers and guide vanes leads to an increase in the total number of grids and an increase in calculation time, the full flow field model of the two-stage p...

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Abstract

The invention discloses a photovoltaic water pump internal flow numerical simulation method. The process includes the steps that three-dimensional modeling and mesh generation are conducted in an internal calculation area of a photovoltaic water pump, a mesh file is imported into Fluent, and initial conditions and boundary conditions are set; a simulation model of a photovoltaic battery panel, a simulation model of a controller and a simulation model of a motor are built by means of Matlab/Simulink, and the rotation speed of the pump is calculated in real time; data exchange between software is achieved by combining a user-defined function (UDF) of Fluent and an M function of Simulink; the photovoltaic water pump internal flow is calculated through Fluent, and the rotation speed and inlet boundary conditions are updated in real time in the solving process according to simulation results of Simulink. The method can be used for numerical simulation of internal flow of the photovoltaic water pump according to actual operation conditions of the photovoltaic water pump, accordingly numerical calculation results are more precise, and finally correct theoretical bases can be provided for design of the photovoltaic water pump.

Description

technical field [0001] The invention belongs to the field of fluid mechanical engineering and relates to a numerical simulation method for the internal flow of a photovoltaic water pump. Background technique [0002] Photovoltaic water pumps use the voltaic effect generated by photovoltaics to directly convert solar energy into electrical energy, and then drive the motor through the controller and inverter to drive the pump to pump water. Photovoltaic water pumps work at sunrise and rest at sunset, and are unattended. They have the advantages of low energy consumption, resource conservation, and convenient use. At the same time, they can effectively achieve the goals of energy conservation, water conservation, agricultural production, and income increase. One of the key development directions of water-saving irrigation and so on. [0003] In the actual operation process, due to the instability of solar radiation, the speed of the photovoltaic water pump is constantly changi...

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Application Information

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IPC IPC(8): G06F17/50G06T17/00
CPCG06F30/17G06F30/20G06T17/00
Inventor 谈明高冯进升吴贤芳刘厚林王凯王勇董亮
Owner JIANGSU UNIV
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