Report
Logarithmic and nonlogarithmic scaling laws of two-point statistics in wall turbulence
| العنوان: | Logarithmic and nonlogarithmic scaling laws of two-point statistics in wall turbulence |
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| المؤلفون: | Mouri, H., Morinaga, T., Yagi, T., Mori, K. |
| المصدر: | PRE, 101, 053103 [2020] |
| سنة النشر: | 2020 |
| المجموعة: | Physics (Other) |
| مصطلحات موضوعية: | Physics - Fluid Dynamics |
| الوصف: | Wall turbulence has a sublayer where one-point statistics, e.g., the mean velocity and the variances of some velocity fluctuations, vary logarithmically with the distance from the wall. This logarithmic scaling is found here for two-point statistics or specifically two-point cumulants of those fluctuations by means of experiments in a wind tunnel. As for corresponding statistics of the rate of the energy dissipation, the scaling is found to be not logarithmic. We reproduce these scaling laws with some mathematics and also with a model of energy-containing eddies that are attached to the wall. Comment: 11 pages, to appear in Physical Review E |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevE.101.053103 |
| URL الوصول: | http://arxiv.org/abs/2004.02417 |
| رقم الانضمام: | edsarx.2004.02417 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevE.101.053103 |
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