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Based on detailed results of direct numerical simulation with high order accuracy and resolution at the late-stages of the transitional boundary layer, new properties are found, such as discontinuous event in the evolution of low-speed streamwise streaks and the appearance called high speed spots in the development of high-speed streamwise streaks. In the present paper, the complex vortex structures and the ejection-sweep phenomenon in the transition process of boundary layers are analyzed thoroughly, and the new properties of high-speed /low-speed streamwise streaks are confirmed to be closely relatcd to the evolution process of vortex structures in the flow-field.
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Keywords:
- streamwise streaks /
- boundary layers /
- transition /
- direct numerical simulation
[1] Klebanoff P S, Tidstrom K D, Sargent L M 1962 J. Fluid Mech. 12 1
[2] Kline S J, Reynolds W C, Schraub F A, Runstadler P W 1967 J. Fluid Mech. 30 741
[3] Landahl M T 1975 SIAM J. Appl Math. 28 735
[4] Landahl M T 1980 J. Fluid Mech. 98 243
[5] Li Z R, Ye J, Lu L P 2001 Journal of Engineering Thermophysics 22 563(in Chinese)[李兆瑞、 叶 剑、 陆利蓬 2001 工程热 22 563]
[6] Lagraa B, Labraga L, Mazouz A 2004 European Journal of Mechanics B-Fluids. 23 587
[7] Andersson P, Brandt L, Bottaro A, Henningson, D S 2001 J. Fluid Mech. 428 29
[8] Brandt L, Henningson D S, Ponziani D 2002 Phys. Fluids 14 1426
[9] Brandt L 2007 European Journal of Mechanics B-Fluids 26 64
[10] Lee C B 2001 Acta Phys. Sin. 50 182 (in Chinese)[李存标 2001 50 182]
[11] Lee C B, Wu J Z 2008 Applied Mechanics Reviews 61 3
[12] Konishi Y Asai M 2010 Fluid Dynamics Research 42 3
[13] Jiang L, Shan H, Liu C. 1999a Recent Advances in DNS and LES Proceedings of the Second AFOSR International Conference on DNS/LES, Rutgers-The State University of New Jersey, New Brunswick, U.S.A, June 7—9, 1999
[14] Lele S K. 1992 J. Comput. Phys. 103 16
[15] Shu CW, Osher S. 1988 J. Comput. Phys. 77 439
[16] Jiang L, Shan H, Liu C. 1999b Recent Advances in DNS and LES, Proceedings of the Second AFOSR International Conference on DNS/LES, Rutgers-The State University of New Jersey, New Brunswick, U.S.A., June 7—9, 1999
[17] Malik MR. 1990 Journal of Computational Physics 86 376
[18] Lee C B 2003 Chin. Phys. 12 1429
[19] Chen L, Tang D B, Liu X B, Oliveira M, Liu C Q 2010 Science in China(G) 53 514
[20] Jeong J, Hussain F 1995 J. Fluid Mech. 285 69
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[1] Klebanoff P S, Tidstrom K D, Sargent L M 1962 J. Fluid Mech. 12 1
[2] Kline S J, Reynolds W C, Schraub F A, Runstadler P W 1967 J. Fluid Mech. 30 741
[3] Landahl M T 1975 SIAM J. Appl Math. 28 735
[4] Landahl M T 1980 J. Fluid Mech. 98 243
[5] Li Z R, Ye J, Lu L P 2001 Journal of Engineering Thermophysics 22 563(in Chinese)[李兆瑞、 叶 剑、 陆利蓬 2001 工程热 22 563]
[6] Lagraa B, Labraga L, Mazouz A 2004 European Journal of Mechanics B-Fluids. 23 587
[7] Andersson P, Brandt L, Bottaro A, Henningson, D S 2001 J. Fluid Mech. 428 29
[8] Brandt L, Henningson D S, Ponziani D 2002 Phys. Fluids 14 1426
[9] Brandt L 2007 European Journal of Mechanics B-Fluids 26 64
[10] Lee C B 2001 Acta Phys. Sin. 50 182 (in Chinese)[李存标 2001 50 182]
[11] Lee C B, Wu J Z 2008 Applied Mechanics Reviews 61 3
[12] Konishi Y Asai M 2010 Fluid Dynamics Research 42 3
[13] Jiang L, Shan H, Liu C. 1999a Recent Advances in DNS and LES Proceedings of the Second AFOSR International Conference on DNS/LES, Rutgers-The State University of New Jersey, New Brunswick, U.S.A, June 7—9, 1999
[14] Lele S K. 1992 J. Comput. Phys. 103 16
[15] Shu CW, Osher S. 1988 J. Comput. Phys. 77 439
[16] Jiang L, Shan H, Liu C. 1999b Recent Advances in DNS and LES, Proceedings of the Second AFOSR International Conference on DNS/LES, Rutgers-The State University of New Jersey, New Brunswick, U.S.A., June 7—9, 1999
[17] Malik MR. 1990 Journal of Computational Physics 86 376
[18] Lee C B 2003 Chin. Phys. 12 1429
[19] Chen L, Tang D B, Liu X B, Oliveira M, Liu C Q 2010 Science in China(G) 53 514
[20] Jeong J, Hussain F 1995 J. Fluid Mech. 285 69
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