Natural convection heat transfer scene rapid simulation system based on decoupling mode

Abstract

The invention provides a natural convection heat transfer scene rapid simulation system based on a decoupling mode. The system is realized through a computer and comprises an input module and an analysis and output module, and the simulation method comprises the steps: firstly, importing a to-be-analyzed fin structure model; establishing a natural convective heat transfer scene physical model, then establishing a rapidly solved natural convective heat transfer scene reduced-order model, then solving the natural convective heat transfer scene reduced-order model by adopting a Gaussian-Seidel iterative algorithm, decoupling a temperature field and a pressure field, when the variation of the temperature field of the adjacent iterations is smaller than a specified value or the number of cycles is larger than the maximum number of cycles, terminating the iterations; and finally, obtaining a temperature field and a speed field in a natural convective heat transfer scene. According to the method, the natural convective heat transfer scene order reduction model is adopted, the temperature field and the pressure field are decoupled, the solving scale is reduced, the computer memory space is reduced, the calculation efficiency is improved, and the temperature field and the velocity field suitable for the natural convective heat transfer scene are obtained.

Description

technical field [0001] The invention relates to the technical field of natural convection heat transfer, in particular to a fast simulation system for natural convection heat transfer scenarios based on a decoupling mode. Background technique [0002] With the iterative development of technical equipment, the power consumption of technical equipment is increasing, and the corresponding heat flux is also increasing. Excessive temperature will affect the reliability of technical equipment and shorten its service life; therefore, the The problem of heat dissipation has become one of the key issues that need to be solved urgently; natural convection heat dissipation has been widely used in engineering fields due to its high reliability, low cost, and no noise, such as aerospace design, cooling of electronic equipment, and large transformers. cooling, reactor cooling, etc.; especially for special environments that require long-term stable outdoor work, this cooling method is irre...

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Problems solved by technology

[0002] With the iterative development of technical equipment, the power consumption of technical equipment is increasing, and the corresponding heat flux is also increasing. Excessive temperature will affect the reliability of technical equipment and shorten its service life; therefore, the The problem of heat dissipation has become one of the key issues that need to be solved urgently; natural convection heat dissipation has been widely used in engineering fields due to its high reliability, low cost, and no noise, such as aerospace design, cooling of electronic equipment, and large transformers. cooling, reactor cooling, etc.; especially for special environments that require long-term stable outdoor work, this cooling method is irreplaceable; therefore, the study of natural convection heat transfer scenarios has very important scientific significance and application value; numerical simulation of natural convection The difficult problem in the heat transfer scene is the two-way coupling of the temperature field and the velocity field, which makes the solution scale of the discrete problem equations very large, and the direct solution of the nonlinear equations leads to long calculation time and large computer storage capacity; therefore, it is necessary to establish a calculation Fast Simulation System for Natural Convection Heat Exchange Scenarios with Less Resource Consumption and High Calculation Efficiency

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