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arXiv math/0603704math.NAcs.NAmath-phmath.MPphysics.flu-dyn

DSC格式中湍流的大涡近似

Large eddy approximation of turbulent flow in DSC schemes

Steffen Hein

AI总结:

本文在离散奇异卷积(DSC)计算流体动力学框架下,通过周期性细胞粗粒化实现湍流的大涡近似,避免节点流动堆积并保留大尺度模式,且粗粒化操作与DSC近场相互作用原理一致,边界处理简单,数值算例验证了方法的有效性。

摘要:

湍流的大涡近似在计算流体动力学的DSC框架内获得了自然设定。周期性细胞粗粒化防止了节点流动的堆积并保留了其大尺度模式。粗粒化操作与DSC的近场相互作用原理一致,因此在边界处简单。数值算例验证了该方法。

英文摘要:

Large eddy approximation of turbulent flow is given a natural setting within the DSC framework of computational fluid dynamics. Periodic cellular coarse-graining prevents the nodal flow from piling up and preserves its large patterns. The coarsening operations are consistent with the near-field interaction principle of DSC and - therefore - uncomplicated at boundaries. Numerical examples validate the approach.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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