中南大学学报（自然科学版）2012，Vol.43Issue(12)：4713-4721,9.
射流表面主流场速度与射流速度耦合减阻特性
Characteristics of drag reduction on coupling of jet surface main flow field velocity and jet velocity
摘要
Abstract
Based on the characteristics of flow field of jet surface and the basic principles of extension, the extension module of coupling elements and coupling ways between the main flow field velocity and jet velocity was built. With RNG k-e turbulence model simulating the drag reduction characteristics of the coupling between the main flow field velocity and the jet velocity, the reasons for reducing the viscous resistance and pressure resistance of the jet surface as well as the controlling behavior towards the flow field of the boundary layer of the wall near the jet holes were studied. The results show that the dray reduction effect of the jet surface is the best when the main flow field velocity gets smaller and the jet velocity gets greater, as well as the energy saving effect is also obvious. The behavior that the coupling of the main flow field velocity and jet velocity controlled the boundary layer is shown as reducing the thickness of viscous layer and the boundary layer, which leads to the reduction of the viscous resistance, and the effect that a counter-flow brought by the reversed eddy near the wall pushes the bionic jet surface flow towards upstream, which results in the pressure drag reduction.关键词
射流表面/摩擦阻力/耦合/数值模拟/减阻Key words
jet surface/ friction resistance/ coupling/ numerical simulation/ drag reduction分类
通用工业技术引用本文复制引用
谷云庆,赵刚,郑金兴,王飞,李照远,刘文博,赵华兴..射流表面主流场速度与射流速度耦合减阻特性[J].中南大学学报（自然科学版）,2012,43(12):4713-4721,9.基金项目
国家自然科学基金资助项目(51275102) （51275102）
中央高校基本科研业务费专项资金项目(HEUCF110702) （HEUCF110702）
哈尔滨市科技创新人才研究项目(159070220011) （159070220011）
