Drag reduction in homogeneous turbulence by scale-dependent effective viscosity
Publication in refereed journal

香港中文大學研究人員

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摘要We demonstrate, by using suitable shell models, that drag reduction in homogeneous turbulence is usefully discussed in terms of a scale-dependent effective viscosity. The essence of the phenomenon of drag reduction found in models that couple the velocity field to the polymers can be recaptured by an "equivalent" equation of motion for the velocity field alone, with a judiciously chosen scale-dependent effective viscosity that succinctly summarizes the important aspects of the interaction between the velocity and the polymer fields. Finally, we clarify the differences between drag reduction in homogeneous and in wall bounded flows.
著者Benzi R, Ching ESC, Procaccia I
期刊名稱Physical Review E
出版年份2004
月份8
日期1
卷號70
期次2
出版社AMER PHYSICAL SOC
國際標準期刊號2470-0045
電子國際標準期刊號2470-0053
語言英式英語
Web of Science 學科類別Physics; Physics, Fluids & Plasmas; Physics, Mathematical

上次更新時間 2020-28-10 於 23:49