A design method of fin free growth micro-channel heat exchanger

Abstract

The application discloses a kind of microchannel heat exchanger design methods of free growth of fin, comprising: after determining the starting point of fin in microchannel and the center of each cross section, determine design area;According to closed Bezier curve and Rodrigues rotation formula, determine the control point of design area;According to control point, material physical property parameter determined according to heat dissipation demand and boundary condition, construct convection-heat exchange analysis model and optimization model;According to grey wolf optimization algorithm, the convection-heat exchange analysis model and optimization model are iteratively solved, and the optimal parameter set is obtained, and microchannel heat exchanger is designed according to the optimal parameter set.The fin of microchannel heat exchanger designed by the application has flexible starting point, cross section and direction;Optimization is carried out by using grey wolf optimization algorithm to determine the parameters of optimal parameter set, and the optimization target is microchannel pressure drop and microchannel bottom surface average temperature, and free growth fin can maintain excellent heat transfer performance within a certain speed range.

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