OpenFoamSim

Author : Denis Fouchard

Description

This repo hosts the work done on OpenFoam as part of the course Aerodynamics: an experiment of virtual product development (POLI48) at Politecnico di Milano.

Simulations

ahmedBody

Simulation of the flow around the Ahmed body with roofbox

ahmedBetterV1

First attempt at improving the roofbox geometry
Credit : Juan Mateos Budiño

ahmedBetterHole

Adding a hole in the roofbox
Credit : Juan Mateos Budiño

ahmedBetterShark

Shape the roofbox like a shark fin
Credit : Juan Mateos Budiño

ahmedBetterDroplet

Shape the roofbox like a droplet
Credit : Paul Archer

Run the simulation

To run the simulation, you need to have OpenFoam installed on your machine. Then, you can run the following commands in the terminal:

openfoam
cd ...
./Allrun.sh

Visualization

To visualize the results, you can use the following command:

touch a.foam

Then open the file a.foam with ParaView.

Drag coefficient plot

You can run the simulation yourself and get the forces.dat file from postProcessing/forces/0/forces.dat to plot the drag coefficient, or use the one provided in the plotting folder. The plot is done with Python using numpy, pandas and matplotlib.

Credit : Denis Fouchard

Example Results

Here is an example of the simulation results:

References

[1] S.R. Ahmed, G. Ramm, Some Salient Features of the Time-Averaged Ground Vehicle Wake, SAE-Paper 840300, 1984.