Particle type meshless simulation system for heat flow coupling scene

Abstract

A particle type meshless simulation system for a heat flow coupling scene adopts a Lagrange method of smoothed particle fluid dynamics to express fluid in a particle form, discretizes a corresponding partial differential equation in a field function into an ordinary differential equation related to time, and integrates a corresponding heat flow coupling calculation formula to realize transient simulation of a heat flow coupling scene. The system is realized through a model construction and granulation module, a system algorithm setting module, a flow field calculation module and a post-processing module. The system is convenient to combine with GPU parallel operation, time consumption is low, heat flow coupling calculation capacity is high, and the used meshless method has the advantages that fluid domain optimization and improvement are facilitated, the gap between a continuum and fragments is easy to bridge, and grid distortion under large deformation is avoided; the system is suitable for being applied to engineering problems of complex flow channel layout, large heat flow coupling calculation amount and fluid domain optimization requirements.

Description

technical field [0001] The invention relates to the technical field of heat-fluid coupling, in particular to a particle-type gridless simulation system for heat-fluid coupling scenarios. Background technique [0002] Heat-fluid coupling problems are widely used in engineering applications, such as the design of inner runners for cooling of gas turbine blades, the cooling design of core components of nuclear reactors, and the thermal management of electronic equipment fronts, etc. [0003] In the heat-fluid coupling simulation of corresponding engineering problems, the Euler grid method is widely used. It simulates fluid flow by dividing the fluid domain into grid units, but it has the following disadvantages in application: [0004] 1) For complex flow fields, in order to ensure the calculation accuracy, the number of grids has to be increased, so the calculation complexity is greatly increased, and the time cost of simulation is correspondingly increased; [0005] 2) For t...

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Problems solved by technology

[0007] In order to overcome the shortcomings of the above-mentioned prior art, the object of the present invention is to provide a particle-based meshless simulation system for heat-fluid coupling scenarios. The system is convenient to combine with GPU parallel computing, with less time consumption and strong heat-fluid coupling computing capability. The meshless method used in it has the characteristics of being convenient for fluid domain optimization and improvement, easy to bridge the gap between continuum and fragments, and avoiding grid distortion under large deformation. Engineering Issues for Domain Optimization Requirements

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