Color Spraying with Wall Film CFD Simulation
Price: $140
In this project, color spraying on the wall with wall film has been simulated, and the results of this simulation have been investigated.
Color Spraying with Wall Film CFD Simulation
Price: $140
In this project, color spraying on the wall with wall film has been simulated, and the results of this simulation have been investigated.
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.
Mesh is created with Ansys Meshing software, and the mesh type is unstructured. The number of cells is 254934.
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:
| Models | ||
| 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 RUN2:0.1m RUN3:0.1m | |
| Velocity magnitude | RUN1:10m/s RUN2:20m/s RUN3:20m/s | |
| Cone angle | RUN1:45deg RUN2:45deg RUN3:30deg | |
| 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 | ||
| 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.