Relationships between a roller and a dynamic pressure distribution in circular hydraulic jumps |
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| Authors: | Yokoi Xiao |
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| Institution: | Division of Mathematics and Research Institute for Electronic Science, Hokkaido University, Sapporo 060-0812, Japan and Computational Science Division, RIKEN (The Institute of Physical and Chemical Research), Wako 351-0198, Japan. |
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| Abstract: | 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. |
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