An Experimental Study on Chaotic Behavior of Thermalhydraulic Oscillation in an Evaporating Tube

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概要

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• The characteristics of flow oscillations in density wave instabilities are experimentally investigated by means of a deterministic method based on chaotic dynamics. The results are as follows. (1) The flow oscillation analyzed in this paper is chaotic and obeys a dynamics with a small degree of freedom. (2) Given the mass flux, the dimension of the attractor in the unstable region decreases with the heat flux, which means that the randomness of the dynamics gradually attenuates with departure from the marginal stability boundary, and the structure of the attractor becomes simpler. (3) The dimension of the attractor can be related to the fundamental frequency, which means that the characteristics of the chaotic dynamics generating the density wave instability depend mainly on the fundamental frequency in the flow oscillation independent of the differences in the experimental conditions. (4) The least number of significant figures of the time-series data is two, but it is plausible to take more than three if possible.

• 一般社団法人日本機械学会の論文
• 1995-05-15

著者

• Nakanishi Shigeyasu

  Dept. Of Mechanical And System Engineering Faculty Of Science And Technology Ryukoku University

• Nakanishi Shigeyasu

  Department Of Mechanical And Systems Engineering Ryukoku University

• YAMAUCHI Shoji

  Dept. of Electro-Mechanical Systems Engineering, Takamatsu National College of Technology

• Yamauchi Shoji

  Dept. Of Electro-mechanical Systems Engineering Takamatsu National College Of Technology

• Yamauchi Shoji

  Department Of Veterinary Anatomy College Of Agriculture

• Sawai To'oru

  Dept. Of Mechanical Engineering School Of Biology-oriented Science And Technology Kinki University

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