高雷诺数壁湍流的研究进展及挑战

高雷诺数壁湍流(high Reynolds number wall-bounded turbulence,HRNWT)是目前湍流科学研究的一个热点也是一个难点,对其现象、规律及机制的认知不足,理论体系远未建立而且研究手段受到各种限制.本文基于对HRNWT主要研究手段的介绍,针对HRNWT中的湍流统计量、超大尺度结构(very large scale motions,VLSMs)的尺度和形态以及起源和影响及其与颗粒的相互作用,总结了HRNWT的研究现状和最新进展,特别梳理了近年来本文作者团队在HRNWT特别是高雷诺数颗粒两相壁湍流方面的研究成果,并对HRNWT的进一步研究给出了建议及展望. 

Progresses and challenges of high Reynolds number wall-bounded turbulence

High Reynolds number wall-bounded turbulence (HRNWT) has been a hotspot and difficult issue in the field of turbulence research in recent years. The understanding of flow phenomena, laws of physics and mechanisms are insufficient and studies on HRNWT are restricted by various deficiencies of research techniques. There is still a long way to go to establish a thorough theoretical framework for HRNWT. Based on the introductions of the leading research techniques, this paper summarizes and reviews the research progresses in statistical characteristics of the HRNWT and very large scale motions (VLSMs) including their morphologies, originations, influences on the turbulent flows, as well as the interactions between turbulence and moving particles in the HRNWT. The contributions of the author's research team on these issues, especially the turbulence-particle interactions are combined. Finally, we highlight the prospects of direction, trends and remaining challenges of further researches.