کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1862098 | 1530623 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On an alternative explanation of anomalous scaling and how well-defined is the concept of inertial range
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
The main point of this communication is that there exists a substantial number of strong events, contributing significantly to the PDF of velocity increments in the nominally-defined inertial range, for which viscosity/dissipation is of utmost importance at high Reynolds numbers. This contribution is largest to the tails of the PDF of velocity increments leading to anomalous scaling, especially of higher-order structure functions. Thus the anomalous scaling is not an attribute of the conventionally-defined inertial range, and the latter is not a well-defined concept. The claim above is supported by an analysis of high-Reynolds-number flows in which among other things it was possible to evaluate the instantaneous rate of energy dissipation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 373, Issues 27â28, 22 June 2009, Pages 2364-2367
Journal: Physics Letters A - Volume 373, Issues 27â28, 22 June 2009, Pages 2364-2367
نویسندگان
M. Kholmyansky, A. Tsinober,