It's the little things that matter: Improving Speed and Stability in OpenFOAM 4 th UK & Eire OpenFOAM User Meeting 19 th April 2016, Exeter, UK Dr. Aleksander J. Dubas, Research Engineer, TSL Technology Ltd. (& Visiting Academic @ University of Southampton)
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It's the little things that matter:Improving Speed and Stability in OpenFOAM
4th UK & Eire OpenFOAM User Meeting19th April 2016, Exeter, UK
Dr. Aleksander J. Dubas,Research Engineer,TSL Technology Ltd.
(& Visiting Academic @ University of Southampton)
About Me
● First started using OpenFOAM to simulate flow through valves and other hydraulic flows in 2010
● Also (coincindentally) started to dabble with Linux at around the same time
About Me
● PhD in Complex Systems Simulation, awarded 2014:
– “Robust Automated Computational Fluid Dynamics Analysis and Design Optimisation of Rim Driven Thrusters”
– Simulations all done in OpenFOAM (automation and optimisation using Python)
About Me
● Innovate UK - Knowledge Transfer Partnership– Used OpenFOAM to design, prototype, test and put into production a
new thruster with world class performance
About Me
About This Presentation
Better
Cheaper Faster
Pre-Solution with potentialFoam
● Initialises a velocity field● Pressure field can also be initialised with -writep flag
– This may be an unstable initialisation
– Method (and results) changed at version 2.4.0:http://www.openfoam.org/version2.4.0/
● Add -noFunctionObjects to stop Function Objects calculations (e.g. forces)