A Closure for Isotropic Turbulence Based on Extended Scale Similarity Theory in Physical Space
基本信息来源于合作网站,原文需代理用户跳转至来源网站获取
摘要:
The closure of a turbulence field is a longstanding fundamental problem,while most closure models are introduced in spectral space.Inspired by Chou's quasi-normal closure method in spectral space,we propose an analytical closure model for isotropic turbulence based on the extended scale similarity theory of the velocity structure function in physical space.The assumptions and certain approximations are justified with direct numerical simulation.The asymptotic scaling properties are reproduced by this new closure method,in comparison to the classical Batchelor model.