Fluent-based multi-way valve simulation analysis and structure optimization method

Abstract

The invention discloses a Fluent-based multi-way valve simulation analysis and structure optimization method, and belongs to the field of multi-way valve simulation analysis in engineering machinery.The method comprises the following steps: firstly, building a multi-way valve test experiment table, and testing the pressure loss and hydraulic power of a multi-way valve under different opening degrees and flow rates; secondly, according to a two-dimensional drawing, establishing a three-dimensional model by utilizing Solidworks, and importing the model into ANSYS to extract a flow channel modelso as to carry out mesh generation; and importing the grid model into Fluent, setting simulation conditions, carrying out simulation, carrying out fitting on a simulation result and an experiment result, and continuously correcting the simulation model; and finally, finding out a key structure size influencing the pressure loss and the hydraulic power according to the corrected simulation model,carrying out fitting and equation solving on structure parameters and an optimization target by utilizing an algorithm toolbox of Matlab and Isight, and selecting an optimal solution according to actual requirements. The invention provides a structural parameter optimization method of a multi-way valve through a method of combining experiments and numerical simulation, and provides guidance for design and production of valve elements.

Description

technical field [0001] The invention belongs to the field of multi-way valve simulation analysis in engineering machinery, and relates to a Fluent-based method for multi-way valve simulation analysis and structural optimization design. Background technique [0002] The multi-way valve is a multi-functional directional valve integrated with multiple directional valves. It can control different actuators at the same time, so as to realize the compound action of the actuators. It is widely used in various construction machinery. The performance of the multi-way valve directly determines the accuracy of the hydraulic system control. Many scholars at home and abroad have carried out research on various characteristics of multi-way valves by means of theoretical derivation, experiment or simulation. Many scholars have done a lot of research on the hydrodynamic analysis of valve components, jet angle, pressure loss and so on. For experimental research, due to the limitation of ex...

AI Technical Summary

Problems solved by technology

For experimental research, due to the limitation of experimental conditions, it is not possible to intuitively understand the state of the flow field in the valve and the force on the wall of the valve core.

At the same time, for the numerical simulation method, often due to the lack of relevant experimental data as a reference, the selection of the simulation boundary model is not accurate, and the flow field in the valve cannot be truly simulated.

At the same time, the structure of the multi-way valve is complex, and the design and manufacturing costs of the valve core and valve body are relatively high. It is difficult to manufacture a large number of components for structural optimization analysis and experiments.

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