Numerical Simulation and Structural Optimization Based on Fluid-Thermal-Solid Interaction Analysis
In order to solve the problem of excessive stress in equal-diameter T-pipe,an optimization method based on flow-thermal-solid interaction analysis method is proposed to optimize the structure of equal diameter T-tubes.Firstly,based on the theory of flow and solid mechanics,the mathematical model and physical model of multi-field coupling of T-shaped tube are established,and the velocity and temperature changes of the fluid in the T-tube and the distribution of equivalent forces of the pipeline are simulated,and the structure of pipeline is optimized on the basis of simulation results.The simulation results show that the pressure difference of the hot and cold fluid will lead to the countercurrent phenomenon of the fluid,which leads to the increase of the equivalent stress value in the upstream region of pipeline.The maximum equivalent stress value of the equal diameter T-pipe appears at the downstream inner wall where the main branch pipes meet.After optimization,the maximum equivalent stress value of the inner wall of pipeline is reduced by about 14％,which can effectively extend the service life of pipeline.This method has certain practical significance for improving the reliability of gas pipeline design.
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维普
