Applications of a stretch model to mixing, diffusion, and reaction in laminar and turbulent flows
Applications of a stretch model to mixing, diffusion, and reaction in laminar and turbulent flows
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拉伸模型在层流和湍流中的混合、扩散和反应中的应用
DOI：
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发表时间：
1979
期刊：
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通讯作者：
W. Ranz
中科院分区：
文献类型：
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作者：
W. Ranz
在基于层流（流体细丝）厚度的拉格朗日参考系中，以及在基于单个流动相关量的扭曲时间尺度中，可以以相对简单的方式描述混合、扩散和反应。拉伸和折叠太妃糖拉，打蛋器和静态混合器，剪切拉伸，拉伸的薄层在一个漩涡，混合与扩散，反应速率控制的扩散反应物通过产品层，和非常快的反应在湍流中的应用。
In a Lagrangian frame of reference based on lamina (fluid filament) thickness and in a warped time scale based on a single, flow dependent quantity, mixing, diffusion, and reaction can be described in a relatively simple way. Applications are presented for stretch and fold in taffy pull, egg beater and static mixer, shear stretch, stretch of laminae in a vortex, mixing with diffusion, reaction rate controlled by diffusion of reactant through a product layer, and very fast reactions in a turbulent flow.