Calculation Method of Resistance of Fluid Equipment Based on CFD

A fluid equipment and resistance calculation technology, applied in the direction of calculation, design optimization/simulation, computer-aided design, etc., can solve problems such as difficulty in resistance calculation of complex thermal fluid equipment

Active Publication Date: 2021-06-15
国核示范电站有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the present invention is also to provide a resistance calculation method of fluid equipment based on CFD that can solve the difficult problem of resistance calculation of complex thermal fluid equipment

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  • Calculation Method of Resistance of Fluid Equipment Based on CFD
  • Calculation Method of Resistance of Fluid Equipment Based on CFD
  • Calculation Method of Resistance of Fluid Equipment Based on CFD

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Embodiment Construction

[0032] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements. In addition, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a comprehensive understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in diagrammatic form to simplify the drawings.

[0033] According to the general inventive concept of the present invention, a method for calculating resistance of fluid equipment based on CFD is proposed, and the resistance value of fluid equipment is calculated by CFD software based on a simplified geometric model of fluid equipment.

[0034] figure 1 It is a schematic diagram ...

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Abstract

The invention provides a method for calculating the resistance of fluid equipment based on CFD, comprising: dividing the fluid equipment into a plurality of areas with relatively independent flow; dividing grids for each area; Perform CFD analysis to obtain a set of flow-resistance data; use quadratic fitting to obtain the flow and resistance curves of each area; simplify the multiple relatively independent areas of flow into multiple areas with constant flow cross-sectional areas Model; S6: Mesh the simplified geometric model, and in the CFD software, add a resistance source item for each model with a constant flow cross-sectional area based on the fitting coefficient obtained by the quadratic fitting; S7: Based on the simplified The grid of the geometric model is analyzed by CFD software to obtain the preliminary resistance value of the fluid equipment. Through the resistance calculation method of the invention, the consumption of manpower and computer resources can be reduced, and the calculation accuracy can be improved.

Description

technical field [0001] The invention relates to the field of computer-aided engineering (CAE), in particular to a method for calculating resistance of fluid equipment based on CFD, and more particularly to a method for calculating resistance of complex thermal fluid equipment based on CFD. Background technique [0002] Thermal fluid systems are mostly composed of pipes, valves and main equipment. The power of the working fluid flow in the system usually comes from a pump or compressor, and it matches the flow resistance generated by other components. In the design stage, for the selection of power equipment, the resistance of the system must be estimated. [0003] For pipes, valves and other components, due to their relatively simple structure and certain standardization and serialization characteristics, empirical formulas are used to calculate their resistance, which can meet the accuracy requirements. However, for the main equipment, block equivalent is usually performe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/28G06F113/08G06F119/14
CPCG06F30/20G06F2119/08
Inventor 李京浩闫大强陈纲丁炜堃陈义学
Owner 国核示范电站有限责任公司
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