SPH simulation of undular hydraulic jumps.

Alireza Valizadeh, Murray Rudman, Joseph J. Monaghan

Monday 29 june 2015

14:50 - 15:05h at Central America (level 0)

Themes: (T) Special session, (ST) Smoothed particle hydrodynamics and other meshfree methods

Parallel session: 2H. Special session: Smoothed Particle Hydrodynamics and other meshfree methods

Standing waves resulting from a hydraulic jump provide an endless ride opportunity to indoor surfers. In this paper we study the turbulence produced by hydraulic jumps in an open channel. This study is novel in the sense that it uses one of the most sophisticated weakly compressible smoothed particle hydrodynamics (SPH) formulations. The numerical model is able to recover the results of jump length and sequent depth ratios in horizontal and sloping channels. Using the SPH method enables us to determine the energy loss more accurately. In addition, for undular hydraulic jumps, the wave amplitude, length and flow characteristics in the non-developed turbulent zone are also studied.