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首页> 外文期刊>International Journal of Heat and Mass Transfer >Heat/mass transfer in rotating impingement/effusion cooling with rib turbulators
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Heat/mass transfer in rotating impingement/effusion cooling with rib turbulators

机译：带肋湍流器的旋转撞击/扩散冷却中的热/质量传递

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摘要

A detailed measurement of the heat/mass transfer coefficients on the ribbed surfaces for the rotating impingement/effusion cooling system has been conducted. Three different jet orientations (front, leading, and trailing) were investigated at the same rotating speed and impinging jet Reynolds number of 3000. A naphthalene sublimation method was used to obtain local heat/mass transfer coefficients. Regardless of rib turbulators, the leading and trailing orientations lead to totally changed heat/mass transfer distributions due to the jet deflection, while the Sh distributions of the front orientation were similar to those of the stationary case. For leading and trailing orientations, the influence of crossflow, which deflected wall jets, decreased due to the blockage effect of the rib turbulators. Therefore, the wall jets spread more widely and the interaction between adjacent wall jets along spanwise direction became stronger, enhancing the heat/mass transfer compared to that on smooth surface.
机译：已经对旋转冲击/排出冷却系统的肋状表面上的传热/传质系数进行了详细的测量。在相同的旋转速度和3000的雷诺数冲击下，研究了三种不同的射流方向（前，前和后）。使用萘升华方法获得局部热/质量传递系数。不管肋骨湍流器是什么，前导方向和尾随方向都会由于射流偏转而导致热量/质量传递分布完全改变，而前方向的Sh分布与固定情况相似。对于前，后方向，由于肋湍流器的阻塞作用，使壁流偏转的横流影响减小了。因此，壁面射流散布更广，相邻壁面射流之间沿展向方向的相互作用变得更强，与光滑表面相比，热量/质量传递得到增强。

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