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LES of the turbulence structure of spatially-developing thermally stratified turbulent boundary layers

机译:空间显影热分湍流边界层的湍流结构

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In this research, in order to generate the inflow turbulence, the turbulence parameters for velocities at recycle station are rescaled and introduced to the inlet boundary, while temperature is treated as a passive scalar. The generated inflow data for temperature as well as velocities are introduced into the main computational domain, where temperature is solved taking into consideration buoyancy effects. With this method, a long fetch is not necessary to simulate the spatially-developing boundary layer. We carry out LES analysis of the spatially-developing thermally stratified turbulent boundary layers. We at first apply Lund's method to generate the inflow turbulence for stratified turbulent boundary layer. By using the generated inflow data, we can simulate the spatially-developing thermally stratified turbulent boundary layers, and investigate the turbulence structure inside them.
机译:在该研究中,为了产生流入湍流,回收站速度的湍流参数重新分配并引入入口边界,而温度被视为被动标量。将产生的温度和速度的流入数据引入主要计算结构域中,以考虑浮力效应来解决温度。利用这种方法,不需要长度提取来模拟空间开发的边界层。我们对空间开发的热分的湍流边界层进行了测量。我们首先应用Lund的方法来为分层湍流边界层产生流入湍流。通过使用产生的流入数据,我们可以模拟空间开发的热分流湍流边界层,并研究它们内部的湍流结构。

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