A211 位相乱流の統計的性質
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概要
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The statistical characteristics of the system described by the Kuramoto-Sivashinsky (KS) equation (SKSE) are studied. The two-time correlation function (TTCF) of the solution for the SKSE decays algebraically until the characteristic time that is defined by the time when the correlation of the system disappears. In addition, the local expansion rate (LER) of the solution for the SKSE is shown to be fluctuate around at O. These results mean that the chaoticity of the SKSE is weak and the correlation remains until the characteristic time. Taking into accout the results, the absolute value of the solution for the SKSE is shown to be obey the large deviation statistics in the time regime where is longer than the characteristic time of the system.
- 日本流体力学会の論文
- 2002-07-23