Pond Overflow CFD Simulation, ANSYS CFX
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- The problem numerically simulates the Pond Overflow using ANSYS CFX software.
- The geometry is designed in a 2.5D model with the Design Modeler software.
- We performed the mesh of the model with ANSYS Meshing software, and the element number equals 55,418.
- The homogeneous Multiphase model defines water and air beside Free Surface Model.
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Using ANSYS CFX software, the current problem simulates the water flow on an overflow that reaches a pond.
An ogee spillway connects to a pond in the simulation. Water flow enters the domain with a velocity of 2 m/s. The outlet and upper surface boundary condition type are of Opening.
The software Design Modeler creates the current model, which has 2.5 dimensions. The geometry of the model features an ogee overflow that flows into a pond with a length of 12m and a height of 3m.
ANSYS Meshing software produces the ‘Structured’ mesh type. The solution has 55,418 structured element numbers.
Methodology: Pond Overflow CFD Simulation, ANSYS CFX
The simulation is independent of Time, so it has performed in steady state form. In addition, the effects of gravity are active. There is a surface tension coefficient of 0.072N/m between water and air.
The turbulence model is k-Epsilon with Scalable Wall Function. The multiphase model is Homogeneous with the standard Free Surface Model.
The Advection Scheme and Turbulence Numeric are High Resolution.
At the end of the solution process, two-dimensional contours, vectors, and streamlines related to velocity and the volume fraction of each of both phases are obtained.
The contour of static pressure changes of water flow in terms of the direction of the pond is visible.
Also velocity results represent the amount of this parameter reaches about 6.5m/s in the most turbulent era.
In the end, using the results of the water volume fraction, it is possible to calculate the height and mass flow rate of water.