摘要
综述了壁湍流边界层分层结构及近壁区湍流猝发过程,对现有典型水下湍流减阻技术进行了较深入地总结.根据各类减阻方法的特点对水下湍流减阻方法进行了分类,并分析了各类减阻方法对壁湍流流场的影响特征,总结了维持或延长层流、干扰湍流"猝发"、壁面隔离、增大湍流阻尼和改变壁面物性等5种水下湍流减阻可行途径,为开展水下湍流减阻研究及发现新的减阻方法提供参考.
Based on the theories of wall turbulent boundary layer and turbulent bursting process,typical underwater turbulence drag reduction technologies at present were analyzed and summarized in general.Firstly the drag reduction technologies were classed by the basic characteristics of wall turbulent boundary layer affected by every drag reduction technology.Then five kinds of feasible underwater turbulent drag reduction ways were gain,which were：（1） retaining or extending laminar flow region,（2） disturbing burst;（3） insulating surface from water,（4） augmenting turbulent damp,（5） changing surface attributes.The conclusions summarized in the paper could be used for the further research of turbulent drag reduction.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2010年第6期620-629,共10页
Tribology
基金
国家自然科学基金项目(50835009
10672136)
陕西省自然科学基础研究计划项目(2010JQ1009)
西北工业大学科技创新基金项目(2008KJ02012)资助
关键词
湍流
边界层
减阻
猝发
turbulence
boundary layer
drag reduction
burst
