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Phys. Rev. E 61, R1016–R1019 (2000)

Relationships between a roller and a dynamic pressure distribution in circular hydraulic jumps

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Kensuke Yokoi1,2 and Feng Xiao3
1Division of Mathematics and Research Institute for Electronic Science, Hokkaido University, Sapporo 060-0812, Japan
2Computational Science Division, RIKEN (The Institute of Physical and Chemical Research), Wako 351-0198, Japan
3Department of Energy Sciences, Tokyo Institute of Technology, Yokohama 226-8502, Japan

Received 14 July 1999; revised 28 September 1999; published in the issue dated February 2000

We investigated numerically the relation between a roller and the pressure distribution to clarify the dynamics of the roller in circular hydraulic jumps. We found that a roller which characterizes a type II jump is associated with two high pressure regions after the jump, while a type I jump (without the roller) is associated with only one high pressure region. Our numerical results show that building up an appropriate pressure field is essential for a roller.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevE.61.R1016
DOI:
10.1103/PhysRevE.61.R1016
PACS:
47.32.Ff, 47.15.Cb, 83.20.Jp, 83.50.Lh
 
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