نتایج جستجو برای: turbulence model

تعداد نتایج: 2130681  

Journal: :Kyoto Journal of Mathematics 1981

Journal: :Mathematical Models and Computer Simulations 2009

Journal: :Communications in Mathematical Physics 2021

We introduce a shell model of turbulence featuring intermittent behaviour with anomalous power-law scaling structure functions. This is solved analytically the explicit derivation exponents. The solution associates intermittency hidden symmetry for Kolmogorov multipliers, making our approach relevant real turbulence.

2002
A. Lazarian Jungyeon Cho Huirong Yan

Turbulence is the most common state of astrophysical flows. In typical astrophysical fluids, turbulence is accompanied by strong magnetic fields, which has a large impact on the dynamics of the turbulent cascade. Recently, there has been a significant breakthrough on the theory of magnetohydrodynamic (MHD) turbulence. For the first time we have a scaling model that is supported by both observat...

2012
Tanveer Ahmed Bhuiyan Samiul Hayder Choudhury Asif Al - Rasheed S. P. Majumder

In this paper, the effect of atmospheric turbulence on bit error probability in free-space optical CDMA scheme with Sequence Inverse Keyed (SIK) optical correlator receiver is analyzed. Here Intensity Modulation scheme is considered for transmission. The turbulence induced fading is described by the newly introduced gamma-gamma pdf[1] as a tractable mathematical model for atmospheric turbulence...

2002
A. Lazarian Jungyeon Cho Huirong Yan

Turbulence is the most common state of astrophysical flows. In typical astrophysical fluids, turbulence is accompanied by strong magnetic fields, which has a large impact on the dynamics of the turbulent cascade. Recently, there has been a significant breakthrough on the theory of magnetohydrodynamic (MHD) turbulence. For the first time we have a scaling model that is supported by both observat...

2013
Christopher L. Rumsey

Turbulence modeling for the Reynolds-averaged Navier-Stokes (RANS) equations includes many assumptions and simplifying closures. Numerous models have been developed over the years, and all are deficient in one way or another. Many collective efforts have attempted to validate turbulence models for a wide range of problems, but conclusions have often been muddied due to the lack of grid converge...

1998
G. P. Zank W. H. Matthaeus C. W. Smith

The deposition of energy into the solar wind beyond 1 AU is thought to result from the dissipation of low frequency magnetohydrodynamic (MHD) turbulence via kinetic processes at spatial scales comparable to the ion gyroradius. Beyond 1 AU, solar wind turbulence is comprised of both a decaying component generated in the corona and turbulence generated dynamically in situ by processes such as str...

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