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Turbulent Kinetic Energy and Temperature Variance Budgets in the Far Wake Generated by a Circular Cylinder

机译:圆柱产生的远流中的湍动能和温度方差预算

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Measurements of velocity and the temperature fluctuations havebeen performed to determine the budget of q~2 (mean turbulencekinetic energy) and θ~2 (temperature variance) in the far wake ofa cylinder. The two budgets show similar physical phenomena(advection and diffusion) as the source of large scale inhomogeneityon the flow centreline. It was noted that the estimates ofthe dissipation rates ε and χ of q~2 and θ~2, respectively, obtainedusing a spectral chart method results in a better closure in boththe q~2 and θ~2 budgets than their isotropic counterparts.
机译:速度和温度波动的测量具有 进行以确定q〜2的预算(平均湍流 动能)和θ〜2(温度变化) 一个圆柱体。这两个预算显示出相似的物理现象 (对流和扩散)是大规模不均匀性的根源 在流量中心线上。据指出,对 分别获得q〜2和θ〜2的耗散率ε和χ 使用频谱图方法可以更好地封闭两者 q〜2和θ〜2的预算要比各向同性的预算大。

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