One-equation Sub-grid Scale Model with Eddy Viscosity involving no Length Scale

Abstract

   Large-eddy simulation (LES) of turbulent channel flow using the transport equation of sub-grid scale (SGS) kinetic energy ksgs is carried out. In this study, we aim to establish a one-equation model which doesn’t have length scale in SGS viscosity and each term in the transport equation of ksgs. Modeling of SGS dissipation term is paid much attention to and it is finally modeled by first derivative of ksgs. As a result, its performance is almost equivalent to the standard Smagorinsky model. [This abstract is not included in the PDF]