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A CFD-based turbine flow meter simulation method

A technology of turbine flowmeter and simulation method, applied in design optimization/simulation, geometric CAD, CAD numerical modeling, etc., can solve problems such as inability to clearly express flow state

Pending Publication Date: 2021-05-18
HEBEI UNIVERSITY
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a simulation method of a CFD-based turbine flowmeter to solve the problem that the existing turbine flowmeter simulation method cannot clearly express the flow state

Method used

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  • A CFD-based turbine flow meter simulation method
  • A CFD-based turbine flow meter simulation method
  • A CFD-based turbine flow meter simulation method

Examples

Experimental program
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Embodiment Construction

[0018] Such as figure 1 Shown, the simulation method of the turbine flow meter based on CFD of the present invention comprises the following steps:

[0019] (1) Geometric model drawing

[0020] Taking the DN10 turbine flow sensor as an example, the core part of the turbine flowmeter is as follows: figure 2 shown. Carry out actual surveying and mapping of the movement part of the turbine flowmeter, and use SolidWorks mechanical drawing software to draw the geometric model of the movement part according to the actual size of the movement.

[0021] The drawing method of the geometric model of the movement part is: in the mechanical drawing software, first establish the datum plane, and then use the "stretch" function to obtain the movement body, and draw the structure including blades, pipes and flow guides in this way. Each part of the parts, and then assemble each part of the parts together to obtain the assembly geometric model of the core part of the turbine flowmeter.

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Abstract

The invention relates to a CFD-based turbine flow meter simulation method, which comprises the following steps: (1) drawing a geometric model of a movement part of a turbine flow meter, (2) performing model subdivision of each part of a movement simulation model, (3) performing 6DOF programming of quality attributes of an impeller, (4) solving a solver in the impeller simulation model and setting boundary conditions, and outputting an information file of the rotation position of the impeller; and (5) solving the instrument coefficient of the turbine flowmeter according to the rotating speed of the impeller and the input flow of the turbine flowmeter. According to the simulation method, the mass information of the impeller can be effectively added to the impeller model, water flow pushes the impeller to rotate, the rotation process of the impeller can be recorded, the simulation difficulty of the turbine flowmeter is reduced, the simulation precision is improved, and the simulation state of impeller rotation is better displayed. The simulation method is more consistent with the actual situation and is more scientific, so that the simulation accuracy can be greatly improved.

Description

technical field [0001] The invention relates to a simulation technology of a turbine flowmeter, in particular to a simulation method of a CFD-based turbine flowmeter. Background technique [0002] Turbine flowmeter is a kind of flowmeter with compact structure, high reliability and good anti-interference, which occupies an important position in the field of flowmeter. The working principle of the turbine flowmeter is to generate a driving torque through fluid flow. When the driving torque is greater than the resistance torque, the impeller generates a rotational acceleration. When the rotation speed reaches a certain value, the driving force is equal to the resistance torque, and the impeller speed remains stable. Among many research methods, fluid simulation is the most time-saving and labor-saving method for the performance research of turbine flowmeters. In the past, most of the turbine flowmeter simulations used the sliding grid method, preset the turbine speed, and the...

Claims

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Application Information

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IPC IPC(8): G06F30/17G06F30/28G06F111/10G06F113/08G06F119/14
CPCG06F30/17G06F30/28G06F2111/10G06F2113/08G06F2119/14
Inventor 郭素娜刘旭郑鑫杨子航李光王帆
Owner HEBEI UNIVERSITY
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