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采用雷诺应力湍流模型和Simplic算法对半封闭槽道内倾斜射流冲击移动平板的流动和传热特性进行了数值模拟,研究了不同射流角度和不同平板移动速度下平板近壁湍动能和板面努塞尔数的变化.结果表明:射流角度和平板运动速度对平板近壁湍动能和表面努塞尔数值分布影响显著;当入射角与平板运动方向相同时,板速的升高提高了近壁面的湍动能,但是降低了冲击区域的局部努塞尔数值;平板表面的平均努塞尔数值随板速的提高先降低后大幅升高,高速下角度对平板表面的平均传热效果影响较小;当入射角为80°,平板运动方向与入射方向相反且板速和射流速度相同时,在移动平板表面能够获得较佳的紊动和传热效果.
Reynolds stress turbulence model and Simplic algorithm were used to simulate the flow and heat transfer characteristics of oblique jet impinging moving plates in semi-closed channels. The effects of turbulent kinetic energy at different jet angles and plate moving velocities, The results show that jet angle and plate moving velocity have significant influence on the plate near wall turbulent kinetic energy and surface Nusselt value distribution. When the incident angle is the same as the plate moving direction, the increase of plate speed increases the near wall However, the local Nusselt number of the impact region is reduced. The average Nusselt number of the slab surface decreases first and then increases sharply, while the influence of the angle on the surface of the slab at low speed has little effect. When the incident angle is 80 °, the movement direction of the plate is opposite to the incident direction and the plate velocity and the jet velocity are the same, the better turbulent and heat transfer effect can be obtained on the moving plate surface.