Color Spraying with Wall Film CFD Simulation

$210.00 Student Discount

In this project, color spraying on the wall with wall film has been simulated, and the results of this simulation have been investigated.

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The journal file in ANSYS Fluent is used to record and automate simulations for repeatability and batch processing.
editable geometry and mesh allows users to create and modify geometry and mesh to define the computational domain for simulations.
The case and data files in ANSYS Fluent store the simulation setup and results, respectively, for analysis and post-processing.
Geometry, Mesh, and CFD Simulation methodologygy explanation, result analysis and conclusion
The MR CFD certification can be a valuable addition to a student resume, and passing the interactive test can demonstrate a strong understanding of CFD simulation principles and techniques related to this product.


Color Spraying with Wall Film, CFD Simulation by Ansys Fluent Training

In this project, the spraying color on the wall has been simulated with Ansys Fluent software. We used one-way DPM to simulate the discrete phase. The cone injection and particle velocity are equal to the first simulation 10 with a particle diameter of 0.001 m and a spray angle of 45 °. This project aims to determine whether velocity and particle diameter affect the staining. The velocity is 20 meters per second for the second simulation, and the particle diameter is 0.1m. Also, the cone angle is 45 degrees. The DPM Boundary condition Type is wall film so that the color particles stick to the wall. The present simulation process is performed unsteady and in a time step equal to 0.0025 s.

 Geometry & Mesh

The 3D geometry of this project has been produced with SpaceClaim software. The length and width of the computational area are 3 m, and its height is 4 m.

Color Spraying

Mesh is created with Ansys Meshing software, and the mesh type is unstructured. The number of cells is 254934.

Color Spraying

Color Spraying CFD Simulation

To simulate the color spraying on the wall with wall film, we consider several assumptions:

  • The solver is pressure-based.
  • The current simulation is unsteady in terms of time.
  • We ignored the gravity effect.

Here is a summary of the steps for defining the problem and its solution in the following table:

Viscous model laminar
Discrete phase on
particle treatment unsteady particle tracking
material in injection Color Spray
particle type in injection inert
injection type cone
  Number of streams 400
Point properties
  Cone-Type Point-cone
  Start time 0s
  Stop time 0.2s
  Diameter RUN1:0.001m



  Velocity magnitude RUN1:10m/s



  Cone angle RUN1:45deg



  Total flow rate 1-e20
Boundary conditions
Wall & wall back wall
wall motion stationary wall
discrete phase BC type scape
top wall Wall
wall motion stationary wall
discrete phase BC type Wall film
Solution Methods
Pressure-velocity coupling   simple
Spatial discretization pressure second-order
momentum second-order upwind
Modified turbulent viscosity first-order upwind
Initialization method   standard

 Color Spraying Results

In this simulation, the spray paint on the wall is simulated using an injector to insert the particles conically. According to the conical angle, the range of motion of the particles is determined.

As mentioned earlier, this project aims to determine whether increasing the velocity and diameter of color particles affects staining. At first, a simulation with a smaller diameter and velocity was performed, which had a good result. Then, in the next simulation, the velocity and diameter of the colored particles increased, so it was observed that the particles spread on the wall. In the next simulation, we reduced the spray angle so that the spraying might be done correctly, which did not happen, and the best way to paint was the first simulation.


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