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

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.

10 pages, 7 PS files. To appear in PRE

References in corpus (1)

• Averaging theory for the structure of hydraulic jumps and separation in laminar free-surface flows

Cited by in corpus (2)

• Constant Froude number in a circular hydraulic jump and its implication on the jump radius selection
• Integral methods for shallow free-surface flows with separation