On the role of correlation between instantaneous velocity and pressure-gradient in large-scale turbulence

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Turbulent transport of Reynolds stress by triple moment of fluctuating velocity and pressure-velocity correlation are evaluated from a DNS for wake of a rectangular cylinder located in a uniform flow. The turbulent diffusion transport of turbulent kinetic energy hardly correlates with its gradient vector, indicating that the generally accepted gradient diffusion model is inadequate. It is inferred that the separate modeling of the individual Reynolds stress component provides a better possibility for modeling the turbulent transport in this flow, because of the strong departure from the equilibrium state of turbulence. The possibility of the direct modeling of the pressure gradient-velocity correlation is discussed.

Original languageEnglish
Title of host publicationProceedings of the ASME/JSME Joint Fluids Engineering Conference
EditorsA. Ogut, Y. Tsuji, M. Kawahashi, A. Ogut, Y. Tsuji, M. Kawahashi
Pages2059-2064
Number of pages6
Volume1 C
Publication statusPublished - 2003
Event4th ASME/JSME Joint Fluids Engineering Conference - Honolulu, HI, United States
Duration: 2003 Jul 62003 Jul 10

Other

Other4th ASME/JSME Joint Fluids Engineering Conference
CountryUnited States
CityHonolulu, HI
Period03/7/603/7/10

Fingerprint

Pressure gradient
Turbulence
Kinetic energy

ASJC Scopus subject areas

  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

Obi, S. (2003). On the role of correlation between instantaneous velocity and pressure-gradient in large-scale turbulence. In A. Ogut, Y. Tsuji, M. Kawahashi, A. Ogut, Y. Tsuji, & M. Kawahashi (Eds.), Proceedings of the ASME/JSME Joint Fluids Engineering Conference (Vol. 1 C, pp. 2059-2064)

On the role of correlation between instantaneous velocity and pressure-gradient in large-scale turbulence. / Obi, Shinnosuke.

Proceedings of the ASME/JSME Joint Fluids Engineering Conference. ed. / A. Ogut; Y. Tsuji; M. Kawahashi; A. Ogut; Y. Tsuji; M. Kawahashi. Vol. 1 C 2003. p. 2059-2064.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Obi, S 2003, On the role of correlation between instantaneous velocity and pressure-gradient in large-scale turbulence. in A Ogut, Y Tsuji, M Kawahashi, A Ogut, Y Tsuji & M Kawahashi (eds), Proceedings of the ASME/JSME Joint Fluids Engineering Conference. vol. 1 C, pp. 2059-2064, 4th ASME/JSME Joint Fluids Engineering Conference, Honolulu, HI, United States, 03/7/6.
Obi S. On the role of correlation between instantaneous velocity and pressure-gradient in large-scale turbulence. In Ogut A, Tsuji Y, Kawahashi M, Ogut A, Tsuji Y, Kawahashi M, editors, Proceedings of the ASME/JSME Joint Fluids Engineering Conference. Vol. 1 C. 2003. p. 2059-2064
Obi, Shinnosuke. / On the role of correlation between instantaneous velocity and pressure-gradient in large-scale turbulence. Proceedings of the ASME/JSME Joint Fluids Engineering Conference. editor / A. Ogut ; Y. Tsuji ; M. Kawahashi ; A. Ogut ; Y. Tsuji ; M. Kawahashi. Vol. 1 C 2003. pp. 2059-2064
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