Vespa CFD Pipeline

Here are my notes on the Vespa CFD pipeline I am using to generate results automatically. This is run on on www.massive.org.au

Pipeline Overview

Here are the steps in the pipeline:

• 1. Assemble Vespa

     1. 1. Todo: Automatically generate variations of Vespa streamline parts

        2. Select a number of parts from $PIPELINE_HOME/scooter_bits and combine them into a single STL model file

        3. Place the model file in $PIPELINE_HOME/common/stls for reference

  2. Calculate Frontal Area

• • • 1. Process the single STL module file with CalculateFrontalArea

• 3. Generate OpenFOAM Case

• • • 1. Create a stub case in $CASE_HOME (based on Motorbike tutorial for now)

         1. 1. This may include automatic updates to things like snappyHexMeshDict for working out optimal mesh sizes

      2. Set frontal area

• • • • • 1. cp -f $PIPELINE_HOME/forceCoeffs $CASE_HOME/system/

          2. Update "Aref" to correct vaule (sed command probably)

• • • 3. Create PBS batch script for launching the job

• • • • • 1. cp -f $PIPELINE_HOME/common/run_openfoam ./$CASE_HOME/

• 4. Gather Results

• • • 1. Run OpenFOAM case and calculate power requirements from Cd and Aref

• 5. Todo: Based on results submit new jobs using optimisation techniques

Where:

$PIPELINE_HOME= my working dir

$CASE_HOME = the specific test dir

Pipeline Detail

These are working notes, so beware of mistakes and vagueness ;)