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
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.