Fountain Waterfall CFD simulation, Ansys Fluent Training
$120.00 Student Discount
In this project, Fountain Waterfall has been simulated and the results have been investigated.
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Description
Project Description
In this project, a Numerical simulation of Fountain Waterfall has been done by Ansys Fluent software. The system consists of two different fluids, including water as the primary fluid and one secondary fluid is Air. The Eulerian multiphase model has been used. The water is entering the fountain at a speed of 1 m/s with gravity considered as -9.81 m/s-2 in the y axis.
Geometry & Mesh
The 3-D geometry of the present model is carried out using Design Modeler software. The geometry consists of one fountain with one inlet and cylinder around as ground domain. The lower side of the cylinder is considered as ground, and the other sides are pressure outlets.
The meshing of this present model has been generated by ANSYS Meshing software. The mesh grid is unstructured with no element quality lower than 0.64. the figure below shows an overview of the performed mesh.
Fountain Waterfall CFD Simulation Settings
We consider several assumptions to simulate the present model:
- The solver is pressure-based and transient.
- Simulation has only examined fluid behavior; in other words, heat transfer simulation has not been performed.
- The effect of gravity on the flow is considered to be 9.81 m.s-2 and along with the y-axis in the present model.
| Models | ||
| K-omega | Viscous model | |
| standard | k-omega model | |
| shear flow corrections | k-omega options | |
| air | primary phase | |
| water | secondary phase | |
| explicit | formulation | |
| Boundary conditions | ||
| Velocity-inlet | inlet | |
| 0 | initial gauge pressure | mixture |
| 1 m/s | velocity magnitude | water |
| 1 | volume fraction | |
| Pressure outlet | outlet | |
| 1 | backflow volume fraction | air |
| 0 | backflow volume fraction | water |
| wall | wall | |
| stationary wall | wall motion | |
| Solution Methods | ||
| Phase coupled | pressure-velocity coupling | |
| PRESTO! | pressure | |
| first-order upwind | momentum | |
| first-order upwind | specific dissipation rate | |
| first-order upwind | volume fraction | |
| Initialization | ||
| standard | initialization method | |
| 1 m/s | water velocity (0,y,0) | |
| 0 m/s | air velocity (x,y,z) | |
| 1 | the secondary phase volume fraction | |
Results
At the end of the solution process, two-dimensional and three-dimensional velocity, air and water volume fraction, and animation of filling fountain are obtained. The starting time fountain fills with an initial velocity of 1 m/s and takes 1.8s to fill it. After filling, the fountain start to spillage, and the simulation ends. Results are showing there is a relation between initial velocity and inlet diameter with time takes to fill as well as wetted area
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