We present well-resolved large-eddy simulations (LES) of a channel flow solving the fully compressible Navier–Stokes equations in conservative form. An adaptive look-up table method is used for thermodynamic and transport properties. A physically consistent subgrid-scale turbulence model is incorporated, that is based on the Adaptive Local Deconvolution Method (ALDM) for implicit LES. The wall temperatures are set to enclose the pseudo-boiling temperature at a supercritical pressure, leading to strong property variations within the channel geometry. The hot wall at the top and the cold wall at the bottom produce asymmetric mean velocity and temperature profiles which result in different momentum and thermal boundary layer thicknesses. Different turbulent Prandtl number formulations and their components are discussed in context of strong property variations.

我们提出了一种很好解决的通道流动大涡模拟（LES），以保守形式求解了完全可压缩的Navier-Stokes方程。自适应查找表方法用于热力学和传输特性。引入了物理上一致的亚网格尺度湍流模型，该模型基于针对隐式LES的自适应局部反卷积方法（ALDM）。设置壁温以包围超临界压力下的伪沸腾温度，从而导致通道几何形状内的强烈特性变化。顶部的热壁和底部的冷壁产生不对称的平均速度和温度曲线，从而导致动量和热边界层厚度不同。