TECHNIQUE OF OPTIMUM DESIGNING OF AN ELECTRONIC MODULE COOLING SYSTEM
When designing modern radioelectronic devices, there is a need for observing the temperature regime for the functioning of the power elements of the apparatus. Most often, the problem can be solved by installing a radiator. The difficulty lies in the choice of its size, shape and material, from which it will be made. In order to determine all these characteristics, the constructor resorts to analytical calculation methods that suffer from their accuracy and the time required to design. This article deals with the design of a bimetallic (copper-aluminum) brazed radiator, effectively cooling the elements of the electronic module with high heat flow unevenness. The characteristics of the radiator and the method of constructing the initial (non-optimized) model with allowance for the required constraints are given. With the help of modern computer-aided design tools, the study was carried out, based on the results of which further optimization of the design was carried out. The optimization was carried out in two stages. The first stage consisted in the search for the optimal geometry of the radiaor structure, where the thicknesses and heights of the ribs and slats acted as variables. The second stage consisted in the gradual replacement of the material of elements from copper to an aluminum alloy. The influence of a change in a design parameter is described. Graphs and tables of results are given, on the basis of which it is possible to draw conclusions about the significance of a particular parameter on the distribution of heat fluxes. We describe all the difficulties that the authors encountered during the optimization of the design of the radiator in the modeling environment, and the ways to solve them. The main tasks solved with the help of the developed optimization algorithm are the increase in accuracy, the reduction in labor intensity and the duration of the search for the optimal design, the exclusion of the influence of the "human" factor