OpenFOAM vs OpenLB for water infrastructure engineering problems

[apelletingeas]

Hello everyone,

I’m used to performing CFD simulations with OpenFOAM to simulate free surface flow engineering problems for water infrastructure (channel flow in water treatment plant, river flow, wet well of pumping stations, etc.), or even pipe-flow for pumping stations.

OpenFOAM is widely used for this kind of engineering problems. For most of these engineering problems, the interFoam solver is very relevant but the computational time remains a challenge to deliver the project on time.

I was wondering if somebody here decided to switch from OpenFOAM to OpenLB to simulate free surface flow engineering problems and if yes, do you see any improvement regarding the simulation time on your day to day projects ?

Regards,

[mathias]

There is a comparison OpenLB vs. OpenFOAM for single phase flows: https://scholar.google.com/citations?view_op=view_citation&hl=en&user=sCl2dpIAAAAJ&citation_for_view=sCl2dpIAAAAJ:blknAaTinKkC on CPUs. OpenLB was found 32 times faster fixing the accurany.

Now, OpenLB is running on GPU clusters which accelarates simulations dramatically. Also the free surface modell runs on GPU clusters now!

[apelletingeas]

Many thanks for youy reply. Very interesting article. I found also this article : A LATTICE BOLTZMANN SIMULATION OF THE RHONE RIVER, which seems very encouraging for my needs.

If someone else here have a feedback from the industry or engineering consulting firm, I’m still interested with your point of view

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