# Two-Phase Flow in a Rough River, ANSYS Fluent CFD Simulation Training

\$120.00 Student Discount

In this analysis, flow inside an open channel with roughness in its middle section is simulated.

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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 by ANSYS Fluent software. 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.

 Â Analysis type Option Â Steady state (Two-Phase Flow) Basic settings Fluid and particle definition Air and water Morphology Continuous fluid Pressure Reference pressure 1 atm Buoyancy model Gravity Y-axis. -9.81 Buoy. Ref. Density 1.185 Kg/m3 (Two-Phase Flow) Fluid models Multi-phase Â Free surface model Standard Turbulence Option k-epsilon Wall function scalable (Two-Phase Flow) Boundary conditions Inlet Mass flow inlet Gas Mass flow rate 32 kg/s water Water volume fraction 1 Opening Air volume fraction 1 Outlets Average static pressure Relative pressure 0 Pa Press. Profile Blend 0.05 Walls Mass and momentum No slip wall (Two-Phase Flow) Solver Control Advection scheme High resolution Turbulence numeric First order Convergence criteria Residual type RMS Residual target 1e-4 (Two-Phase Flow) Initialization Initialization Option Â Current solution data (if possible)

## Results

Different contours of velocity, pressure, water volume fraction, etc. are presented in 3D and 2D.

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