OpenFOAM

Listen to the flow

An unsteady flow has, by definition, fluctuations in velocity and pressure. More often than not this results in a more or less pleasant noise. If you fear this noise could be on the less-pleasant side, you can simulate the sound and listen to it before the finished product causes Ye Royale Paine in Ye Buttocks. […]

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Whistle Science

In a random conversation I recently had, a question popped up: why do whistles whistle? I had no choice but to reach for the most complex tool available: OpenFOAM . All the Trouble It’s quite straightforward, get a model of a whistle and stick it into a solver. At least it seemed that easy at

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Parallel ParaView

Using OpenFOAM in parallel with MPI is well explained in the OpenFOAM manual. Rendering results in ParaView on multiple cores on a desktop computer is a little less explained on the light side of the internets. So here’s a quick’n’dirty tutorial for dummies. ParaView itself can’t render on multiple cores. pvserver, on the other hand,

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OpenFOAM and Rotating Machinery: Relative Velocity

In turbomachinery theory relative velocity is defined as w = c – u where u is circumferential velocity and c is absolute velocity at specified point. The relative velocity w is very important for evaulation of flow in or around rotating bodies. When using SRFSimpleFoam, Urel is automatically added to to resulting fields. With others (SimpleFoam with

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Damogran Soup

Damogran Soup

Here’s a quick tutorial on interFoam solver from the OpenFOAM toolbox. It demonstrates how much mess one makes when sneezing close to a bowl of soup. The Case Every time I sneeze during lunchtime my imagination runs wild with images of soup splattering all over the place. It wouldn’t be very polite to try it

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