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Experimental benchmark data for turbulent natural convection in an air filled square cavity

机译:充气方腔中自然湍流的实验基准数据

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An experimental study of low-level turbulence natural convection in an air filled vertical square cavity was conducted. The cavity was 0.75 m high x 0.75 m wide x 1.5 m deep giving 2D flow. The hot and cold walls of the cavity-were isothermal at 50 and 10℃ respectively giving a Rayleigh number of 1.58 x 10~9. The local velocity and temperature were simultaneously measured at different locations in the cavity and both mean and fluctuation quantities are presented, i.e. u, u′_(rms), v, v′_(rms), T, T′_(rms), u′v′, u′T′ and v′T′. The local and average Nusselt numbers, the wall shear stress as well as the turbulent kinetic energy and the dissipation rate of the temperature variance are also presented. The experiments were conducted with very high accuracy and as such the results can form experimental benchmark data and will be useful for validation of computational fluid dynamics codes.
机译:进行了空气垂直垂直腔中低水平湍流自然对流的实验研究。空腔高0.75 m x宽0.75 m x深1.5 m,产生2D流动。空腔的热壁和冷壁分别在50℃和10℃等温,瑞利数为1.58 x 10〜9。在腔体中的不同位置同时测量局部速度和温度,并给出均值和波动量,即u,u′_(rms),v,v′_(rms),T,T′_(rms) ,u'v',u'T'和v'T'。还给出了局部和平均努塞尔数,壁面剪应力以及湍流动能和温度变化的耗散率。实验进行得非常高,因此结果可以形成实验基准数据,并将对验证计算流体力学代码有用。

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