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用电加热的平板模型在风洞中进行了试验,分别测得了加热面向上及向下时混合对流的局部放热系数。试验的范围为风速u=0.1～25米/秒,传热温差T_w-T_f=25～106℃。试验表明浮升力对水平强迫对流的影响与加热面的朝向有关。试验结果已部分地整理成准则方程式。
Experiments were carried out in a wind tunnel using an electrically heated plate model. The local exothermic coefficients of the mixed convection with the heating up and down were respectively measured. The test range of wind speed u = 0.1 ~ 25 m / s, heat transfer temperature difference T_w-T_f = 25 ~ 106 ℃. Experiments show that the effect of buoyancy on horizontal forced convection is related to the orientation of the heating surface. The test results have been partially organized into a guideline equation.