Ogee Spillway CFD Simulation, ANSYS Fluent Training
$80.00 Student Discount
- The problem numerically simulates the Ogee Spillway using ANSYS Fluent software.
- We design the 3-D model by the Design Modeler software.
- We Mesh the model by ANSYS Meshing software, and the element number equals 10959.
- We use the VOF Multi-Phase model to define water and air in channels.
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This simulation is about the Ogee spillway via ANSYS Fluent software. We perform this CFD project and investigate it by CFD analysis.
The main task of this type of structure (spillway) is to remove excess water in situations such as a flood that water flow damages the dam body. The structure of these spillways consists of a vertical plate in the flow direction of the fluid, whose upper edge can be both sharp, curved, and wide.
Spillways have several types: open channel, chute, stepped, siphon, ogee, side channel, labyrinth, and so on. The purpose of the present study is to investigate the behavior of water flow after passing through an ogee spillway in the presence of airflow.
The geometry of the present model is drawn by Design Modeler software. The geometry of this model consists of a horizontal cylinder. It has a horizontal inlet for mixture flow and two vertical outlets for separated gas and liquid flows.
The model is then meshed by ANSYS Meshing software. The model mesh is unstructured, and 10959 cells have been created.
Ogee Spillway Method
Since the channel uses two different flows, the two-phase flow model is used. The two-phase VOF (volume of fluid) model is used in this simulation to define the water as the primary phase and the air as the secondary phase.
Since the phase separation boundary is completely distinct, the Volume of Fluid (VOF) model is used. The sharp type in interface modeling has been used to determine the behavior at the boundary between two phases.
Ogee Spillway Conclusion
After simulation, the contours of velocity, pressure, and mass fraction of water and air are obtained. The contours show that the water flow hits the dam body and starts to overflow from its upper edge.
Then the excess water flow slides on the spillway slope and moves downwards with low pressure. This will prevent the strength and intensity of the flood.