摘要
研究粗糙壁湍流的统计特性和流动结构对于丰富湍流理论和指导工程实践具有重要意义。壁面相似律是粗糙壁湍流研究取得的经典理论,最近关于湍流边界层内-外区不同尺度结构之间存在相互作用的新的认识,对壁面相似律的有效性提出了挑战,壁面相似律的适用性成为目前研究的一个热点问题。针对这一现状,本文概述了近期国内外在粗糙壁湍流研究中的重要成果,并进一步讨论了今后研究的可能方向。
Exploring the statistics and structural characteristics of rough-wall turbulence is of vital importance and essence to the turbulence theory and engineering application. A w e l l-established theory in the rough-wall turbulence study was the w all s im i la r ity hypothesis, to which the latest finding of the inner-outer layer interaction between structures w ith different scales brings a severe challenge. Consequently, the validation of the hypothesis became a hot topic. In views of the current status,the present paper reviews recent major achievements in the rough-wall turbulence at home and abroad,and the possible contents in later research are fu rthe r discussed.
出处
《空气动力学学报》
CSCD
北大核心
2017年第5期611-619,共9页
Acta Aerodynamica Sinica
基金
国家自然科学基金(11372001
11672020
11490552)
中央高校基本科研业务费(YWF-16-JCTD-A-05)
关键词
粗糙壁湍流
壁面相似律
拟序结构
内-外区相互作用
rough-wall turbulence
wall similarity hypothesis
coherent structures
inne--outer layer interaction
