CHAOTIC BEHAVIORS AND TRANSITION TO TURBULENCE IN POROUS MEDIA

Masuoka, Takashi; Takatsu, Yasuyuki; Inoue, Tomomi

Heat Transfer & Transport Phenomena in Microscale

ISBN Imprimir: 1-56700-150-5

CHAOTIC BEHAVIORS AND TRANSITION TO TURBULENCE IN POROUS MEDIA

Takashi Masuoka The University of Kitakyushu, and Department of Mechanical Engineering, Kyushu University, Kyushu, Japan

Yasuyuki Takatsu Department of Mechanical Engineering Kyushu Institute of Technology 1 -1, Sensui-Cho, Tobata-Ku Kitakyushu, 804 Japan; Department of Mechanical Engineering, Hiroshima Kokusai Gakuin University 6-20-1 Nakano, Aki-ku, Hiroshima 739-0321, JAPAN

Tomomi Inoue Department of Mechanical Science and Engineering, Kyushu University 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, JAPAN

Sinopsis

An experimental study has been made on the chaotic behaviors in the transition to turbulence of flow through porous media consisting of a bank of tube in a narrow gap. Judging from the examination on the correlation dimension and the maximum Lyapunov exponents, we can identify the chaotic behaviors in porous media for Re>~60. Rapid incerease in the maximum Lyapunov exponents was observed for Re>~300. Also the spatial distribution of the Lyapunov exponents was discussed.

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