Turbulent Drag Reduction by Streamwise Traveling Waves of Wall-Normal Forcing

IF 25.4 1区工程技术 Q1 MECHANICS

Annual Review of Fluid Mechanics Pub Date : 2023-08-24 DOI:10.1146/annurev-fluid-120720-021445

K. Fukagata, K. Iwamoto, Y. Hasegawa

引用次数: 1

Abstract

We review some fundamentals of turbulent drag reduction and the turbulent drag reduction techniques using streamwise traveling waves of blowing/suction from the wall and wall deformation. For both types of streamwise traveling wave controls, their significant drag reduction capabilities have been well confirmed by direct numerical simulation at relatively low Reynolds numbers. The drag reduction mechanisms by these streamwise traveling waves are considered to be the combination of direct effects due to pumping and indirect effects of the attenuation of velocity fluctuations due to reduced receptivity. Prediction of their drag reduction capabilities at higher Reynolds numbers and attempts for experimental validation are also intensively ongoing toward their practical implementation. Expected final online publication date for the Annual Review of Fluid Mechanics, Volume 56 is January 2024. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

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沿流行波的壁法向力减少湍流阻力

我们回顾了湍流减阻的一些基本原理，以及使用壁面吹/吸力的流向行波和壁面变形的湍流减阻技术。对于这两种类型的顺流行波控制，在相对较低的雷诺数下，直接数值模拟已经很好地证实了它们显著的减阻能力。这些流向行波的减阻机制被认为是泵送产生的直接影响和接收能力降低引起的速度波动衰减的间接影响的结合。在更高雷诺数下对其减阻能力的预测和实验验证的尝试也在加紧进行，以实现其实际应用。《流体力学年度评论》第56卷预计最终在线出版日期为2024年1月。请参阅http://www.annualreviews.org/page/journal/pubdates用于修订估算。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Annual Review of Fluid Mechanics 物理-力学

CiteScore

54.00

自引率

0.40%

发文量

期刊介绍： The Annual Review of Fluid Mechanics is a longstanding publication dating back to 1969 that explores noteworthy advancements in the field of fluid mechanics. Its comprehensive coverage includes various topics such as the historical and foundational aspects of fluid mechanics, non-newtonian fluids and rheology, both incompressible and compressible fluids, plasma flow, flow stability, multi-phase flows, heat and species transport, fluid flow control, combustion, turbulence, shock waves, and explosions. Recently, an important development has occurred for this journal. It has transitioned from a gated access model to an open access platform through Annual Reviews' innovative Subscribe to Open program. Consequently, all articles published in the current volume are now freely accessible to the public under a Creative Commons Attribution (CC BY) license. This new approach not only ensures broader dissemination of research in fluid mechanics but also fosters a more inclusive and collaborative scientific community.