Large-Eddy simulation of swirling turbulent jet flows in absence of vortex breakdown

被引：0
|
作者：
Zemtsop, Celestin P. [1 ,2 ]
Stöllinger, Michael K. [1 ,2 ]
Heinz, Stefan [1 ,2 ]
Stanescu, Dan [1 ,2 ]
机构：
[1] University of Wyoming, Laramie, Wyoming 82071, United States
[2] Department of Mathematics, 1000 East University Avenue, USA
来源：
AIAA Journal | 2009年 / 47卷 / 12期
关键词：
This paper reports the results of numerical investigations of swirling turbulent jet flows by large-eddy simulation. Reynolds-averaged Navier-Stokes simulations are used to generate mean inflow data. Fluctuations are added to the profiles of the means to produce instantaneous inflow data. The instantaneous inflowdata are correlated such that the characteristic length and time scales of inflowing turbulent eddies are consistent with the corresponding Reynoldsaveraged Navier-Stokes profiles imposed at the inlet. The resulting large-eddy simulation method is validated against experimental data of both swirling and nonswirling turbulent jets. The application of the validated largeeddy simulation method to studies of the mechanism of swirl effects shows the following. Swirl breaks apart the typical ring structures of nonswirling turbulent jets into two modes: a helical mode and streamwise braid structures. The interaction of these two modes generates unorganized turbulence that enhances the turbulent mixing. An analysis of the mixing enhancement by swirl shows a significant increase of the turbulent mixing efficiency of scalars with the swirl number (of up to 21.7% for the cases considered). Copyright © 2009 by Stefan Heinz. Published by the American Institute of Aeronautics and Astronautics; Inc;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Journal article (JA)
引用
收藏
页码：3011 / 3021
相关论文
共 50 条
  • [31] Large-eddy simulation for particle collision growth in turbulent flows
    Department of Mechanical Engineering and Science, Kyoto University, Yoshidahonmachi, Sakyo-ku, Kyoto-shi, Kyoto, 606-8501, Japan
    Nihon Kikai Gakkai Ronbunshu, B, 2006, 10 (2441-2448):
  • [32] Large Eddy Simulation of Turbulent Confined Highly Swirling Annular Flows
    Jones, W. P.
    Lyra, S.
    Navarro-Martinez, S.
    FLOW TURBULENCE AND COMBUSTION, 2012, 89 (03) : 361 - 384
  • [33] Coarse resolution large-eddy simulation of turbulent channel flows
    Shi, J
    Thomas, TG
    Williams, JJR
    INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW, 2001, 11 (01) : 20 - 35
  • [34] Three problems in the large-eddy simulation of complex turbulent flows
    Mahesh, Krishnan
    Hou, Yucheng
    Babu, Pradeep
    Lecture Notes in Computational Science and Engineering, 2007, 56 : 99 - 115
  • [35] Large-eddy simulation of spatially developing turbulent wake flows
    Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, WV, United States
    J Ship Res, 2006, 3 (208-221):
  • [36] Large-eddy simulation of reacting turbulent flows in complex geometries
    Mahesh, K.
    Constantinescu, G.
    Apte, S.
    Iaccarino, G.
    Ham, F.
    Moin, P.
    Journal of Applied Mechanics, Transactions ASME, 2006, 73 (03): : 374 - 381
  • [37] Large Eddy Simulation of Turbulent Confined Highly Swirling Annular Flows
    W. P. Jones
    S. Lyra
    S. Navarro-Martinez
    Flow, Turbulence and Combustion, 2012, 89 : 361 - 384
  • [38] A numerical study of vortex breakdown in turbulent swirling flows
    Spall, RE
    Ashby, BM
    JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 2000, 122 (01): : 179 - 183
  • [39] Large-Eddy Simulation of Turbulent Mixing of a Jet in Cross-Flow
    Esmaeili, Mostafa
    Afshari, Asghar
    Jaberi, Farhad A.
    JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME, 2015, 137 (09):
  • [40] Large-Eddy Simulation of Plane Jet Injection into Supersonic Turbulent Crossflow
    Schaupp, Christoph
    Friedrich, Rainer
    HIGH PERFORMANCE COMPUTING IN SCIENCE AND ENGINEERING, GARCH/MUNICH 2007, 2009, : 349 - 363
12345