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In this article, we report on an experimental research on the probability density function (PDF) of temperature measured in the wake of a circular cylinder slightly heated and its relationships with the turbulent mixedness under different Reynolds numbers (1200-8600). The temperature is measured by a probe of cold-wire with 0.63-m in diameter. Results show that the temperature PDF varies significantly with location in the wake. An increase in Reynolds number speeds up this variation, particularly accelerates the evolution from totally non-Gaussianity to near-Gaussianity along the wake centreline.
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Keywords:
- turbulent wake /
- passive scalar /
- probability density function (PDF) /
[1] Hawthorne W R, Wedell D S, Hottel H C, 1949 Third Symposium (International) on Combustion, Flames and Explosion Phenomena, The Combustion Institute, Pittsburgh, PA, 1949 , pp266-288
[2] Pope S B 1985 Prog. Energy Combust. Sci. 11 119
[3] Pope S B 1990 Twenty-third Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, PA, 1990, pp591-612
[4] O'Brien E E, 1980 Turbulent Reacting Flows (ed. P.A. Libby & F.A. Williams), (Springer) p185-218
[5] Libby P A, Williams F A (ed.) 1994 Turbulent Reacting Flows (Academic)
[6] Jayesh, Warhaft Z 1992 Phys. Fluids A 4 2292
[7] Jayesh, Warhaft Z 1991 Phys. Rev. Lett. 67 3503
[8] Mi J, Antonia R A, Anselmet F 1995 Phys. Fluids 7 1665
[9] Antonia R A, Mi J 1993 J. Fluid Mech. 250 531
[10] Mi J, "Non-Gaussianity of Probability Density Function of Turbulent Scalars," The 1995 Australian Symposium on Combustion and the fourth Australian Flame Days, Adelaide, Nov. 9-10, 1995
[11] Eswaran V, Pope S B 1988 Phys. Fluids A 4 506
[12] Metaisand O, Lesieur M 1992 J. Fluid Mech. 280 157
[13] Jaberi F A, Miller R S, Madnia C K, Givi P 1996 J. Fliud Mech. 313 241
[14] Mi J 2006 Phys. Rev. E 74 016301
[15] Sreenivasan K R 1981 Phys. Fluids 24 1232
[16] Mi J, Antonia R A 1999 Int. Community of Heat and Mass Transfer 26 45
[17] Paranthoen P, Petit C, Lecordier J C 1982 J. Fluid Mech. 124 457
[18] LaRue J C, Libby P A 1974 Phys. Fluids 17 873
[19] Zhou Y, Antonia R A, Tsang W K 1998 Expts. Fluids 25 118
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[1] Hawthorne W R, Wedell D S, Hottel H C, 1949 Third Symposium (International) on Combustion, Flames and Explosion Phenomena, The Combustion Institute, Pittsburgh, PA, 1949 , pp266-288
[2] Pope S B 1985 Prog. Energy Combust. Sci. 11 119
[3] Pope S B 1990 Twenty-third Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, PA, 1990, pp591-612
[4] O'Brien E E, 1980 Turbulent Reacting Flows (ed. P.A. Libby & F.A. Williams), (Springer) p185-218
[5] Libby P A, Williams F A (ed.) 1994 Turbulent Reacting Flows (Academic)
[6] Jayesh, Warhaft Z 1992 Phys. Fluids A 4 2292
[7] Jayesh, Warhaft Z 1991 Phys. Rev. Lett. 67 3503
[8] Mi J, Antonia R A, Anselmet F 1995 Phys. Fluids 7 1665
[9] Antonia R A, Mi J 1993 J. Fluid Mech. 250 531
[10] Mi J, "Non-Gaussianity of Probability Density Function of Turbulent Scalars," The 1995 Australian Symposium on Combustion and the fourth Australian Flame Days, Adelaide, Nov. 9-10, 1995
[11] Eswaran V, Pope S B 1988 Phys. Fluids A 4 506
[12] Metaisand O, Lesieur M 1992 J. Fluid Mech. 280 157
[13] Jaberi F A, Miller R S, Madnia C K, Givi P 1996 J. Fliud Mech. 313 241
[14] Mi J 2006 Phys. Rev. E 74 016301
[15] Sreenivasan K R 1981 Phys. Fluids 24 1232
[16] Mi J, Antonia R A 1999 Int. Community of Heat and Mass Transfer 26 45
[17] Paranthoen P, Petit C, Lecordier J C 1982 J. Fluid Mech. 124 457
[18] LaRue J C, Libby P A 1974 Phys. Fluids 17 873
[19] Zhou Y, Antonia R A, Tsang W K 1998 Expts. Fluids 25 118
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