Structure optimization of trapezoidal vortex generator

摘要

In this paper, the structure of trapezoidal vortex generator in power-law fluid is optimized, and the trapezoidal vortex generator with different trailing edge angles is simulated. The results show that under the current model, the trapezoidal vortex generator performs best when the trailing edge angle is 47.2 degrees. At the same time, the ratio of the parallel length to the length of the vortex generator is changed. It is found that the measurement results are different when the parallel length is different from the length of the vortex generator at the same trailing edge angle. Then, the ratio of the parallel length to the length of the vortex generator is changed for numerical simulation at the same trailing edge angle. Finally, under the current model, when the trailing edge angle is 45° and the ratio is 0.15, the measurement effect is the best; when the trailing edge angle is 47.2 ° and the ratio is 0.10, the measurement accuracy is the most accurate; when the trailing edge angle is 49° and the ratio is 0.20, the measurement effect is the best. The simulation results are basically consistent with the experimental results, which ensure the singleness of variables while simulating, and provide some reference value for the design of vortex generator.