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为研究涡流二极管切向管结构对其性能及内部流场的影响,本文采用SIMPLE算法、κ-ε模型对锥角为0°(直筒型)、3°、5°、7°和10°的五种切向管结构模型进行了数值模拟。结果表明:随着切向管锥角的增大,由于强制涡速度的提高,反向阻力系数随之增大,同时由于切向管中涡量的增大,正向阻力系数也随之增大。直筒型切向管结构ε值最小,随着切向管锥角增大,ε值随之增大,在锥角7°时达到最大,10°时ε值减小。因此涡流二极管切向管锥角的最优值在7°左右。所得结论可为涡流二极管的优化设计提供参考依据。
In order to study the influence of the eddy current diode tangential tube structure on its performance and internal flow field, the SIMPLE algorithm and κ-ε model were used to study the effect of the tangential tube structure on the performance of the tangential tube. Five kinds of tangential tube structure models were numerically simulated. The results show that with the increase of tangential tube taper angle, the coefficient of reverse drag increases with the increase of forced vortex velocity. At the same time, due to the increase of vorticity in tangential tube, the positive drag coefficient also increases Big. As the taper angle of tangential tube increases, the value of ε increases with the increase of taper angle, reaching the maximum at 7 ° cone angle and decreasing at 10 °. Therefore, the optimum value of the eddy current diode tangential tube taper is about 7 °. The conclusion can provide a reference for the optimal design of eddy current diode.