Snowfall CFD Simulation using DPM, Ansys Fluent Training
Price: $12
In this project, snowfall in the park has been simulated, and the results of this simulation have been investigated.
Problem Description
This study investigated snowfall in the park using the DPM (Disctere phase material) method. In this simulation, two types of material are used: air and particles that snow in a Disctere phase material. Trajectories of particles within the park were observed using Ansys Fluent software.
Geometry & Mesh
the 3-D geometry of the present model is carried out using Spaceclim software.


For grid generation, unstructured mesh with 1553972 elements in the Ansys meshing module was utilized. The curvature Method was used to focus on grid-sensitive areas. The following figure shows the mesh generation for this problem.



Snowfall CFD Simulation
We consider several assumptions to simulate the present model:
- Flow equations don't solve.
- The simulation is transient.
- The effect of gravity on the fluid flow is 9.81 m.s-2 along the y-axis downward.
Also, The table below shows the characteristics and values of boundary conditions, along with the models and hypotheses.
| Discrete phase model (DPM) | ||||
| Injection type: | Surface velocity inlet | |||
| Diameter Distribution: | Rosin-Rammler | |||
| Diameter min: | 1e-4m | |||
| Diameter mean: | 1e-4m | |||
| Diameter max: | 1e-4m | |||
| Total flow rate: | 1e-20 kg/s | |||
| Material Properties | ||||
| air | ||||
| Inert-particle (impurities) | ||||
| Amount | Fluid properties | |||
| 1550 | Density (kg/m3) | |||
| Boundary condition | Type | Amount (units) | ||
| Inlet | Velocity inlet | 0 m/s DPM= escape | ||
| Sym, left, right | symmetry | |||
| Bench, ground, leaves, line, road, wood | wall | stationary wall No-slip DPM=wall film | ||
| Initialize | standard | |||
Results
Finally, the particle tracking values in the park are extracted, and the snowfall animation is attached.
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