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sports car simulation in OpenLB

OpenLB – Open Source Lattice Boltzmann Code Forums on OpenLB General Topics sports car simulation in OpenLB

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  • #7140
    garcfd
    Participant

    Hello OpenLB friends,

    I been trying to use OpenLB recently, and got this sports car case to run.
    Its about 2 million voxels. Does anyone know how to run a case at realistic
    conditions? eg length scale 1m, velocity 20m/sec, density 1.2, Re=1.2 million

    https://twitter.com/garcfd/status/1617933068320526337/photo/1

    Thanks Giles.

    #7141
    mathias
    Keymaster

    For LES and that high Re you would need much more resolution, 200 million and more which is no problem on a cluster of CPU or a few GPUs. Further a wall funtion might be reuqired.

    #7142
    garcfd
    Participant

    Hi Mathias, that is very useful and interesting to know.

    what I was wondering is what settings are required to get it to just run
    since when I increase the velocity to say 10 m/sec it crashed, so expect
    that have to change some solver settings for higher speeds? Thank Giles.

    #7143
    mathias
    Keymaster

    There is a chapter on stability criteria in the bock of Krüger et al. on LBM. We also have a lecture on in at our spring school. About the usuage of turbulent modells in OpenLB you can check out the nozzle3d example.

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