Anomalous scaling and refined similarity of an active scalar in a shell model of homogeneous turbulent convection
Publication in refereed journal

香港中文大學研究人員

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替代計量分析
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其它資訊
摘要Anomalous scaling in the statistics of an active scalar is studied in a shell model of homogeneous turbulent convection. We extend refined similarity ideas for homogeneous and isotropic turbulence to homogeneous turbulent convection and attribute the origin of the anomalous scaling to variations of the entropy transfer rate. We verify the consequences and thus the validity of our hypothesis by showing that the conditional statistics of the active scalar and the velocity at fixed values of entropy transfer rate are not anomalous but have simple scaling with exponents given by dimensional considerations, and that the intermittency corrections are given by the scaling exponents of the moments of the entropy transfer rate.
著者Ching ESC, Cheng WC
期刊名稱Physical Review E
出版年份2008
月份1
日期1
卷號77
期次1
出版社AMER PHYSICAL SOC
國際標準期刊號1539-3755
電子國際標準期刊號1550-2376
語言英式英語
Web of Science 學科類別Physics; Physics, Fluids & Plasmas; PHYSICS, FLUIDS & PLASMAS; Physics, Mathematical; PHYSICS, MATHEMATICAL

上次更新時間 2020-16-10 於 01:52