# Wind Driven Rain, Ansys Fluent CFD Simulation Training

\$91.00 Student Discount

In this project, wind-driven rain 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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## Project Description

In this project, numerical simulation of wind-driven rain has been done using Ansys Fluent software. The purpose of this project is to investigate the movement of raindrops in wind conditions of 5 meters per second, which has been done in two ways, one-way DPM and two-way DPM. The diameter of the drops is 0.5 cm but in order to be seen better, they have been scaled in contours and animation.

## Geometry & Mesh

The two-dimensional geometry of this project has been produced with Spaceclaim software. The length of the computational area is 20 m and its height is 10 m.

The meshing of this present model has been generated by Ansys Meshing software. The mesh grid is unstructured and the total cell number is 19741.

## Wind-Driven Rain CFD Simulation

To simulate the present model, we consider several assumptions:

• The solver is pressure-based and transient.
• The present simulation is unsteady in terms of time.
• The gravity effect is equivalent to -9.81 m.s-1.

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

 Models Viscous model Spalart Allmaras Discrete phase on particle treatment unsteady particle tracking material in injection anthracite particle type in injection inert injection type group Boundary conditions Inlet Velocity inlet velocity magnitude 5 Â m.s-1 discrete phase BC type reflect Outlet Pressure outlet gauge pressure 0 Pascal discrete phase BC type escape bottom Wall wall motion stationary wall discrete phase BC type trap Solution Methods Pressure-velocity coupling Â simple Spatial discretization pressure second-order momentum second-order upwind Modified turbulent viscosity first-order upwind Initialization Initialization method Â hybrid

## Wind-Driven Rain Results

According to the animation and speed and pressure counters, it is clear that solving this problem in the form of a one-way coupling was sufficient and there was no need to solve a two-way coupling. We know that in two-way couplings, the momentum effects of particles on the fluid are also calculated. Therefore, it has a much larger computational volume than one-way couplings, and in simulations where the number and size of particles are very large, these effects must be considered.

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

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