NUMERICAL STUDY OF TURBULENT FLOW FOR MODERATE-SLOPE STEPPED SPILLWAYS
DOI:
https://doi.org/10.11113/mjce.v30.15717Keywords:
Air-water flow, fluent, VOF model, stepped spillway, standard k −ε modelAbstract
Stepped spillway is a power full hydraulic structure for energy dissipation because of
the large value of the surface roughness. The performance of the stepped spillway is enhanced
with the presence of air that can prevent or reduce the cavitation damage. This work aims to
simulate air entrainment and determine the characteristics of flow at stepped spillways. Within
this work flow over stepped chute is simulated by using fluent computational fluid dynamics
(CFD). The volume of fluid (VOF) model is used as a tool to simulate air-water interaction on
the free surface thereby the turbulence closure is derived in the k −ε turbulence standard model.
The found numerical results agree well with experimental results.
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