Drag Reduction Characteristics of Longitudinal Grooves under Limited Gap Height Conditions

JU Kang; ZHAO Zhuobin; DENG Qinghua; LI Jun

doi:10.7652/xjtuxb202609015

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Drag Reduction Characteristics of Longitudinal Grooves under Limited Gap Height Conditions

更新时间：2026-09-04

- Drag Reduction Characteristics of Longitudinal Grooves under Limited Gap Height Conditions
- Journal of Xi'an Jiaotong University Vol. 60, Issue 9, Pages: 154-164(2026)
- 作者机构：
  
  西安交通大学能源与动力工程学院，710049，西安
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202609015
  CLC： TK14
- Received：27 January 2026，
  
  Online First：22 April 2026，
  
  Published：10 September 2026
- 稿件说明：
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JU Kang, ZHAO Zhuobin, DENG Qinghua, et al. Drag Reduction Characteristics of Longitudinal Grooves under Limited Gap Height Conditions[J]. Journal of Xi'an Jiaotong University,2026,60 (9):154-164. https://doi.org/10.7652/xjtuxb202609015.
DOI：

JU Kang, ZHAO Zhuobin, DENG Qinghua, et al. Drag Reduction Characteristics of Longitudinal Grooves under Limited Gap Height Conditions[J]. Journal of Xi'an Jiaotong University,2026,60 (9):154-164. https://doi.org/10.7652/xjtuxb202609015. DOI：

摘要

针对纵向沟槽在间隙高度受限场景下减阻特性不明晰的现状，通过数值方法研究了6种形状纵向微沟槽在不同受限间隙高度下的减阻情况。从速度梯度、摩擦切应力、平均速度分布、湍流动能和流向涡量5个方面深入探讨了其减阻机制，比较了各种槽形的减阻性能，分析了沟槽的无量纲横截面积和无量纲湿润周长对减阻性能的影响规律。结果表明：纵向沟槽能够有效减缓速度梯度，降低摩擦切应力和湍动能峰值，抑制流向涡，使得矩形沟槽和半圆形沟槽的减阻效果最好，梯形沟槽次之；当无量纲沟槽宽度、无量纲横截面积和无量纲湿润周长分别为18、13和40左右时，各种纵向沟槽的减阻效果达到最佳，且增加法向湿润周长可使得槽谷两端摩擦切应力大幅度下降，减阻区域增大，减阻效果提升；随着间隙高度增加，减阻效果增加，且逐渐趋于稳定，矩形沟槽在间隙高度为80倍沟槽宽度时，可减阻4.2%。研究结果可为纵向沟槽截面形状和尺寸优化提供技术支撑，同时为间隙高度受限条件下的湍流减阻提供参考。

Abstract

To clarify the drag reduction characteristics of longitudinal grooves under limited gap height conditions

the drag reduction performance of six types of longitudinal microgrooves at different limited gap heights is investigated numerically.The drag reduction mechanisms are examined from five aspects：velocity gradient

frictional shear stress

mean velocity distribution

turbulent kinetic energy

and streamwise vorticity.The drag reduction performance of various groove shapes is compared

and the effects of the dimensionless cross-sectional area and dimensionless wetted perimeter on drag reduction performance are analyzed.It is shown that the velocity gradient and frictional shear stress are effectively reduced

the peak turbulent kinetic energy is lowered

and streamwise vortices are suppressed by longitudinal grooves.The best drag reduction is achieved by rectangular and semicircular grooves

followed by trapezoidal grooves.Optimal drag reduction is achieved when the dimensionless groove width

dimensionless cross sectional area

and dimensionless wetted perimeter are approximately 18

and 40

respectively.Furthermore

the frictional shear stress at both ends of the groove valley is significantly reduced by increasing the normal wetted perimeter

thereby enlarging the drag reduction region and enhancing the drag reduction effect.As the gap height increases

the drag reduction effect is enhanced and gradually stabilizes.At a gap height 80 times the groove width

a drag reduction of 4.2% is achieved by rectangular grooves.The results provide technical support for optimizing the cross-sectional shapes and dimensions of longitudinal grooves and a reference for turbulent drag reduction under limited gap height conditions.

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references

段鹏宇，陈曦.壁湍流的复合减阻及能流分析[J].实验流体力学，2024,38（4）：1-10.

Duan Pengyu,Chen Xi.Composite drag control and energy flux analysis for wall turbulence[J].Journal of Experiments in Fluid Mechanics,2024,38（4）：1-10.

Walsh M J.Drag characteristics of V-groove and transverse curvature riblets[C]//Viscous Flow Drag Reduction.Reston,VA,USA：AIAA,1980：168-184.

Bechert D W,Bruse M,Hage W.Experiments with three-dimensional riblets as an idealized model of shark skin[J].Experiments in Fluids, 2000, 28（5）：403-412.

Bechert D W,Bartenwerfer M.The viscous flow on surfaces with longitudinal ribs[J].Journal of Fluid Mechanics,1989 ,206：105-129.

Bacher E V,Smith C R.A combined visualization-anemometry study of the turbulent drag reducing mechanisms of triangular micro-groove surface modifications[C]//Shear Flow Control Conference.Reston,VA, USA：AIAA,1985：AIAA1985-548.

Kumar S,Pandey K M,Sharma K K.Advances in drag-reduction methods related with boundary layer control：a review[J].Materials Today：Proceedings, 2021,45（Part 7）：6694-6701.

潘家正.湍流减阻新概念的实验探索[J].空气动力学学报，1996,14（3）：304-310.

Pan Jiazheng.The experimental approach to drag reduction of the transverse ribbons on turbulent flow[J].Acta Aerodynamica Sinica,1996,14（3）：304-310.

Dean B,Bhushan B.Shark-skin surfaces for fluid-drag reduction in turbulent flow：a review[J].Philosophical Transactions of the Royal Society：A Mathematical,Physical and Engineering Sciences,2010,368（1929）：4775-4806.

丛茜，封云，任露泉.仿生非光滑沟槽形状对减阻效果的影响[J].水动力学研究与进展：A辑，2006 , 21（2）：232-238.

Cong Qian,Feng Yun,Ren Luquan.Affecting of riblets shape of nonsmooth surface on drag reduction[J].Journal of Hydrodynamics,2006,21（2）：232-238.

Qiu Hangyu,Chauhan K,Lei Chengwang.A numerical study of drag reduction performance of simplified shell surface microstructures[J].Ocean Engineering, 2020,217：107916.

Bai Qingshun,Bai Jinxuan,Meng Xiangpan,et al.Drag reduction characteristics and flow field analysis of textured surface[J].Friction,2016,4（2）：165-175.

Liu Z M,Chen R,Tang Z Q,et al.Drag reduction performance of triangular（V-groove）riblets with different adjacent height ratios[J].Journal of Applied Fluid Mechanics,2023,16（4）：671-684.

Li Tianjian,Yang Tianlong,Dong Qin,et al.Numerical simulation study on the drag reduction characteristics of grooves-microbubbles coupling surfaces[J].International Journal of Metrology and Quality Engineering,2024,15：7.

Tirandazi P,Hidrovo C H.Study of drag reduction using periodic spanwise grooves on incompressible viscous laminar flows[J].Physical Review Fluids, 2020,5（6）：064102.

Walsh M J.Turbulent boundary layer drag reduction using riblets[C]//20th Aerospace Sciences Meeting.Reston,VA,USA：AIAA,1982：AIAA 1982-169.

Walsh M J.Riblets as a viscous drag reduction technique[J].AIAA Journal,1983,21（4）：485-486.

陈璠，徐朋飞."仿生学"沟槽减阻仿真分析及机理研究[J].航空发动机，2021 ,47（2）：28-32.

Chen Fan,Xu Pengfei.Simulation analysis and mechanism study on drag reduction of "bionics"groove[J].Aeroengine,2021 ,47（2）：28-32.

王巍，黄茹，周艾，等.基于V形沟槽的机翼蒙皮减阻特性仿真分析[J].沈阳航空航天大学学报，2023 , 40（2）：83-89.

Wang Wei,Huang Ru,Zhou Ai,et al.Simulation analysis of drag reduction characteristics for wing skin based on V-shaped groove[J].Journal of Shenyang Aerospace University,2023,40（2）：83-89.

攸连庆.V形沟槽表面结构特征与减阻性能的关联性研究[D].大连：大连理工大学，2016.

García-Mayoral R, Jiménez J.Drag reduction by riblets[J].Philosophical Transactions of the Royal Society：A Mathematical,Physical and Engineering Sciences,2011,369（1940）：1412-1427.

Jiménez J,Moin P.The minimal flow unit in near-wall turbulence[J].Journal of Fluid Mechanics, 1991 , 225：213-240.

Menter F R.Two-equation eddy-viscosity turbulence models for engineering applications[J].AIAA Journal,1994,32（8）：1598-1605.

Martin S,Bhushan B.Fluid flow analysis of a sharkinspired microstructure[J].Journal of Fluid Mechanics,2014,756：5-29.

Choi H,Moin P,Kim J.Direct numerical simulation of turbulent flow over riblets[J].Journal of Fluid Mechanics,1993,255：503-539.

Celik I B,Ghia U,Roache P J,et al.Procedure for estimation and reporting of uncertainty due to discretization in CFD applications[J].Journal of Fluids Engineering,2008,130（7）：078001.

Zanoun E S,Durst F,Nagib H.Evaluating the law of the wall in two-dimensional fully developed turbulent channel flows[J].Physics of Fluids,2003 ,15（10）：3079-3089.

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