On the relationship between mixing length and strong turbulence estimates for transport due to drift turbulence

Connor JW.; Pogutse OP.

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On the relationship between mixing length and strong turbulence estimates for transport due to drift turbulence

机译：关于混合长度和由于湍流引起的强湍流估计之间的关系

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For a simple two-dimensional nonlinear model of the collisional drift instability the relationship between mixing length and strong turbulence fluxes investigated. Calculation of the turbulent wavenumber spectrum within a strong turbulence model shows that the transport is dominated by an inertial range contribution; this yields a similar result for the fluxes to that from an improved mixing length theory. The nature of the spectrum in the dissipation region, where collisional viscosity dominates, provides an explanation of an apparent paradox that arises when transport fluxes are cast in a form proportional to viscosity (or the diffusion coefficient). [References: 20]

机译：对于碰撞漂移不稳定性的简单二维非线性模型，研究了混合长度和强湍流之间的关系。在强湍流模型中湍流波数谱的计算表明，输运主要由惯性范围贡献决定。这与改进的混合长度理论得出的通量结果相似。耗散区域中光谱的性质（碰撞粘度占主导）解释了当以与粘度（或扩散系数）成比例的形式浇铸传输通量时出现的明显悖论。 [参考：20]

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《Plasma physics and controlled fusion》 |2001年第2期|共21页
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Connor JW.; Pogutse OP.;
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3. APS -70th Annual Meeting of the APS Division of Fluid Dynamics- Event - Relationships between Physical and Fourier Space for Large-Eddy Simulation of Premixed Turbulence Combustion: Transition from Weak to Strong Vortices. [J] . Yuan Xuan, Paulo Paes, James Brasseur Bulletin of the American Physical Society . 2017,第14期

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On the relationship between mixing length and strong turbulence estimates for transport due to drift turbulence

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