Erosion in the Bent Pipe CFD Simulation, Ansys Fluent Training

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In this project, erosion in the bent pipe has been simulated and the results of this simulation have been investigated.

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

This simulation is modeling erosion in the bent pipe by a Two-way DPM Erosion Model to see the erosion rate in the pipe. Working fluid is water liquid, and sand particles are DPM injections. Particles are inert and with no initial velocity.


The 3-D geometry of the present model is carried out using Design Modeler software.


The meshing of this present model has been generated by ANSYS Meshing software. The mesh grid is unstructured with no element quality lower than 0.53, and the total cell number is 448925. the figure below shows an overview of the performed mesh.


Erosion CFD Simulation

To simulate the present model, several assumptions are considered, which are:

  • The solver is pressure-based.
  • This Simulation is steady.
  • 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.

The following is a summary of the steps for defining the problem and its solution.

K-epsilon Viscous model
Realizable k-epsilon model
Scalable wall function k-epsilon options
water primary phase
sand Particle
explicit formulation
Boundary conditions
Velocity-inlet inlet
Discrete phase pressure escape
44.8 initial gauge pressure
2 m/s velocity magnitude water
Pressure outlet outlet
Discrete phase condition Escape
0 Supersonic gage pressure 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
standard initialization method
2m/s water velocity (0,y,0)
0 m/s particle velocity (x,y,z)



At the end of the solution process, two-dimensional and three-dimensional velocity, erosion rate, particle tracking counters are obtained. This 3-D simulation shows how sand particles erode the pipe from its bend. Also shows the effect of bend on pressure and velocity field on the bent pipe.

You can obtain Geometry & Mesh file and a comprehensive Training Movie that presents how to solve the problem and extract all desired results.


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