Effects of Large-Scale Fluctuations in Fully Developed Turbulence
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概要
- 論文の詳細を見る
Applying a path integral method to turbulence, we have shown that fluctuations at long wavelengths can be treated in such a satisfactory way that the difficulty with those fluctuations met in analytical theories (for example the DIA) is overcome. Those fluctuations are separated into two parts: the quasiuniform part which is represented by a hypothetical, uniform and random flow V and the gradient part in space and time. It is shown that the average over V can be postponed to the last step of calculation. The calculated time-independent quantities such as the energy spectrum are not affected by V, so that the results agree with Kolmogorov's ones. On the other hand, the time-dependent quantities such as the eddy propagator are mainly determined by the average value of V^2.
- 理論物理学刊行会の論文
- 1981-01-25
著者
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Nanba T
Graduate School Of Science And Technology Kobe University
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NANBA Takao
Graduate School of Science and Technology, Kobe University
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Nakano Tohru
Department Of Electrical Engineering Nagoya University
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Tanaka Fumihiko
Department Of Bioproduction Environmental Science Faculty Of Agriculture Kyushu University
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TANAKA Fumihiko
Department of Applied Physics, Tokyo University of Agriculture and Technology : Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University
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NAKANO TOHRU
Department of Anatomy, Faculty of Medicine, Kyoto University
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NAKANO Tohru
Depertment of Physics, Chuo University
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