Meshfree Method To Predict The Effect of Corrugated Bed on Hydraulic
Jump Characterictic Especially Energy Dissipation
Syamsuri 1,a and Tungga Bhimadi 1, b
1 Department of Mechanical Engineering Adhi Tama Institute of Technology Surabaya, Indonesia
a [email protected], b [email protected]
Keywords: Hydraulic jump, smoothed particle hydrodynamics model, energy dissipation, and effect
of corrugated beds.
Abstract.
A hydraulic jump is a common phenomenon which can be observed in open channels flow
such as rivers and spillways. It can cause damage of the downstream bed and bank of the channel due
to the process of continuous erosion and degradation. In order to reduce the hydraulic jump
destruction, the energy in the hydraulic jump must be dissipated as much as possible. One method to
increase dissipation of energy is using a corrugated bed. In order to know the effect of a corrugated
bed on the hydraulic jump, a smoothed particle hydrodynamics (SPH) model is applied to investigate
the characteristics of hydraulic jumps in various corrugated beds. A variety of corrugated beds which
are smooth, triangular, trapezoidal, and sinusoidal are considered. The opening of a gate is changed to
adjust the hydraulic jump. The energy dissipation are reported. The results of the present study are in
a good agreement with previous studies. Energy dissipation is compared among corrugated beds and
a smooth bed. It is found that the sinusoidal bed can dissipate more energy than other beds. As a
result, corrugated beds can be used to enhance energy dissipation of hydraulic jump in the open
channel. In general, the proposed SPH model is capable of simulating the effect of corrugated beds on
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