# Cohesion and Adhesion on the Surface of Two Cylinders, ANSYS Fluent Training

\$60.00 Student Discount

In this project, two phase flow of water and air flowing over two cylinders is simulated.

This product includes Geometry & Mesh file and a comprehensive Training Movie.

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## Cohesion and Adhesion Project description

In this project, two phase flow of water and air flowing over two cylinders considering cohesion and adhesion is simulated by ANSYS Fluent software. The water will enter the computational domain with a velocity of 2.6m/s and it flows over the cylinders’ surfaces. The realizable k-epsilon model is exploited to solve fluid flow equations and VOF multi phase model is used to investigate the phase interactions.

## Geometry and mesh

The geometry of this model is designed in ANSYS design modelerÂ® and is meshed in ANSYS meshingÂ®. The mesh type used for this geometry is structured and smaller mesh is used in the proximity of cylinders’ walls. The total element number is 8048.

## Cohesion and AdhesionÂ CFD Simulation Settings

The key assumptions considered in this project are:

• Simulation is done using pressure-based solver.
• The present simulation and its results are steady.
• The effect of gravity has been taken into account and is equal to -9.81 m/s2 in Y direction.

The applied settings are summarized in the following table.

 Â (Two-Phase Flow) Models Viscous model k-epsilon Model Realizable Wall treatment Standard wall functions Multiphase VOF Body force formulation Implicit body force Surface tension Coeff. 73.5 dyn/cm Phase 1 air Phase 2 water (Two-Phase Flow) Boundary conditions Inlets Ambient Pressure inlet Gauge pressure 0 Pa Water volume fraction 0 back Pressure inlet Gauge pressure 0 Pa (VOF) Water volume fraction 0 Inlet Velocity inlet Velocity magnitude 2.6 m/s Water volume fraction 1 Outlets Pressure outlet Gauge pressure 0 Pa Walls stationary Contact angle 90 (Two-Phase Flow) Solution Methods Pressure-velocity coupling PISO Spatial discretization pressure PRESTO! Volume fraction compressive momentum second order upwind energy second order upwind Turbulent kinetic energy first order upwind Turbulent dissipation rate first order upwind (Two-Phase Flow) Initialization Initialization method Â Standard gauge pressure 0 Pa velocity (x,y) (0,0) m/s water volume fraction 0.01182033 Turbulent kinetic energy 0.000191773 m2/s2 Turbulent dissipation rate 0.02866952 m2/s3