Large-eddy simulation of turbulent channel flow at transcritical states

We performed a well-resolved large-eddy simulation (LES) of a channel flow solving the fully compressible Navier-Stokes equations in conservative form. An adaptive look-up table method was used for thermodynamic and transport properties. A physically consistent subgrid-scale turbulence model was incorporated, that is based on the Adaptive Local Deconvolution Method (ALDM) for implicit LES. The wall temperatures were set to enclose the pseudo-boiling temperature at a supercritical pressure, leading to strong property variations within the channel geometry. Due to the unilateral heating, asymmetric mean velocity and temperature distributions are observed. Different turbulent Prandtl number formulations are discussed in context of strong property variations. © 2019 International Symposium on Turbulence and Shear Flow Phenomena, TSFP. All rights reserved.      «

We performed a well-resolved large-eddy simulation (LES) of a channel flow solving the fully compressible Navier-Stokes equations in conservative form. An adaptive look-up table method was used for thermodynamic and transport properties. A physically consistent subgrid-scale turbulence model was incorporated, that is based on the Adaptive Local Deconvolution Method (ALDM) for implicit LES. The wall temperatures were set to enclose the pseudo-boiling temperature at a supercritical pressure, leadi...     »