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在雷诺数Re=7 000～26 800范围内,对矩形通道分别布置单排一对斜截半椭圆柱面、矩形小翼等6种涡流发生器的强化传热效果和压降特性进行数值模拟,并用综合评价因子对比分析各涡流发生器强化传热与流动阻力综合性能。结果表明,斜截半椭圆柱面综合性能最好,分别比矩形小翼、斜截半圆柱面、斜截半椭圆柱体高11.40%～21.88%、1.98%～2.11%、2.53%～3.50%;具有较小迎流截面和流线型设计的斜截半椭圆柱面产生的流阻最低,最高可比矩形小翼低22.45%,比斜截半圆柱面和斜截半椭圆柱体略低。斜截半柱面是一种具有较低阻力损失和较好综合性能的新型涡流发生器。
In the Reynolds number Re = 7 000 ~ 26 800, the numerical simulation of the enhanced heat transfer and pressure drop characteristics of six kinds of vortex generators, such as single-row and one-row oblique beveled semi-elliptic cylindrical and rectangular winglets, The comprehensive evaluation factors were used to analyze the comprehensive performance of heat transfer and flow resistance of each vortex generator. The results show that the comprehensive performance of the oblique semi - elliptic cylinder is the best, which are 11.40% ~ 21.88%, 1.98% ~ 2.11% and 2.53% ~ 3.50% higher than that of the rectangular winglets, the oblique semicircular cylinder and the oblique semi - elliptic cylinder respectively. The skewed semi-elliptical cylinders with smaller in-stream and streamlined design have the lowest flow resistance, which is 22.45% lower than that of rectangular winglets, which is slightly lower than that of obliquely truncated semicircular cylinder and obliquely truncated semi-elliptic cylinder. The oblique half-cylinder is a new type of vortex generator with lower resistance loss and better overall performance.