Novel Power Law of Turbulent Spectrum

• 作者: Chusak Osonphasop Takeo R. M. Nakagawa
• 来源期刊: 流体动力学(英文)
• 学科: 数学
• 关键词: Energy SPECTRUM KINETIC Theory TIDAL Current INERTIAL Sub-Range TURBULENCE Measurement Power Law
• 年，卷（期）: 2014,（2）
• 页码范围: 140-153
• 页数: 14页
• 分类号: O1

摘要

This paper is concerned with novel power law of turbulent energy spectrum and the relevant experiment in tidal current. The power law in the inertial sub-range has been proposed in such a way that the power of the one-dimensional turbulent energy spectrum varies from 0 to -2 approximately, but it is accompanying the small oscillation with increasing the wave number. The well-known Kolmogorov -5/3 power law is merely one facet, to appear within the present proposed novel power law. The turbulent energy spectra (Su, Sv, Sw) in x-, y-and z-directions, respectively oscillate with the wave number. It is found that the turbulent in the tidal currents is three dimensional, and the intermittence of momentum transport is a predominant and characteristic feature in tidal current.