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Simulation of isotropic turbulence degeneration based on the large-eddy method.(Report)

Abdibekov, U. S. ; Zhumagulov, B. T. ; Zhakebayev, D. B. ; Zhubat, K. Zh.

Mathematical Models and Computer Simulations, July, 2013, Vol.5(4), p.360(11) [Tạp chí có phản biện]

ISSN: 2070-0482

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  • Nhan đề:
    Simulation of isotropic turbulence degeneration based on the large-eddy method.(Report)
  • Tác giả: Abdibekov, U. S. ; Zhumagulov, B. T. ; Zhakebayev, D. B. ; Zhubat, K. Zh.
  • Chủ đề: Turbulence (Fluid dynamics) -- Physiological Aspects ; Turbulence (Fluid dynamics) -- Methods
  • Là 1 phần của: Mathematical Models and Computer Simulations, July, 2013, Vol.5(4), p.360(11)
  • Mô tả: Byline: U. S. Abdibekov (13317), B. T. Zhumagulov (13317), D. B. Zhakebayev (13317), K. Zh. Zhubat (13317) Keywords: isotropic turbulence; Navier-Stokes equation; longitudinal-transverse correlation functions; micro scale of turbulence Abstract: In this paper, the simulation of isotropic turbulence degeneration is studied. The turbulent process is modeled based on filtered three-dimensional unsteady Navier-Stokes equations. For the closure of the main equations, a viscous model of turbulence is used. The problem is solved numerically, i.e., in solving the equation of motion the modified method of fractional steps using compact schemes is employed and the equation for pressure is solved by the Fourier method in combination with matrix factorization. Temporal variations in the kinetic energy of turbulence and changes in the micro scale of turbulence and longitudinal-transverse correlation functions have been obtained. Longitudinal and transverse one-dimensional spectra have been found. Author Affiliation: (13317) Al-Farabi Kazakh National University, Almaty, Kazakhstan Article History: Registration Date: 13/07/2013 Received Date: 26/07/2011 Online Date: 26/07/2013 Article note: Original Russian Text (c) U.S. Abdibekov, B.T. Zhumagulov, D.B. Zhakebayev, K.Zh. Zhubat, 2013, published in Matematicheskoe Modelirovanie, 2013, Vol. 25, No. 1, pp. 18--32.
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 2070-0482

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