Two-Phase Flow on a Rough Surface CFD Simulation
In this analysis, flow inside an open channel with roughness in its middle section is simulated.
This ANSYS Fluent project includes CFD simulation files and a training movie.
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Two-Phase Flow on a Rough Surface Project Description
In this analysis, the two-phase flow inside an open channel with roughness in its middle section is simulated. The water flow enters the channel with a mass flow rate of 32 Kg/s. The k-epsilon equation with scalable wall functions is used to solve and analyze fluid flow.
Geometry & Mesh
The geometry of this project is designed in ANSYS Design Modeler and meshed inside ANSYS Meshing software. The mesh type used for this geometry is a combination of structured and unstructured mesh near the rough geometry and the total number of elements is 245175.
Two-Phase Flow on a Rough Surface CFD Simulation Settings
The key assumptions considered in this project are:
- The present simulation and its results are considered to be steady and do not change as a function time.
- The effect of gravity has been taken into account and is equal to -9.81 in Y direction.
The applied settings are recapitulated in the following table.
|(Two-Phase Flow)||Basic settings|
|Fluid and particle definition||Air and water|
|Pressure||Reference pressure||1 atm|
|Buoyancy model||Gravity Y-axis.||-9.81|
|Buoy. Ref. Density||1.185 Kg/m3|
|(Two-Phase Flow)||Fluid models|
|Free surface model||Standard|
|(Two-Phase Flow)||Boundary conditions|
|Inlet||Mass flow inlet|
|Gas||Mass flow rate||32 kg/s|
|oil||Water volume fraction||1|
|Opening||Air volume fraction||1|
|Outlets||Average static pressure|
|Relative pressure||0 Pa|
|Press. Profile Blend||0.05|
|Mass and momentum||No slip wall|
|(Two-Phase Flow)||Solver Control|
|Advection scheme||High resolution|
|Turbulence numeric||First order|
|Convergence criteria||Residual type||RMS|
|Initialization Option||Current solution data (if possible)|
Different contours of velocity, pressure, water volume fraction, etc. are presented in 3D and 2D.
All files, including Geometry, Mesh, Case & Data, are available in Simulation File. By the way, Training File presents how to solve the problem and extract all desired results.