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how to change parameters and geometry

OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › how to change parameters and geometry

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  • February 17, 2015 at 9:33 pm #1774
    a.r.ravangard
    Member

    Hi rnhow can i change the geometry and constants (like omega and others).rnwhich files and folders must be change?rntanx

    February 18, 2015 at 6:17 am #2177
    mathias
    Keymaster

    Hi,rnrnYou can change omega (by e.g. changing the viscosity nu) and the characteristic length in the unitConverter.rnrnMathias

    February 18, 2015 at 6:39 pm #2178
    a.r.ravangard
    Member

    tank you for quick reply mathias.rnI have two questions:rn1.when change the geometry , I must change boundary conditions too.rnplz give me a guidence!rn2.In ccp file there is not streaming and collision formule.rnthe coding is not understandable for me.rn(I am working by fortran and matlab )rnDo you have any offer to improvment.rnrnrn**** I am doing my Ms projet.rnIt is modeling a multiphase flow.rnI am using the RK model.

    February 21, 2015 at 2:29 pm #2179
    mathias
    Keymaster

    Hi,rnrn1/ If you formulatre everything in terms of nx and ny the boundary setting will change automatically (cf. cylinder2d example).rn2/ Have a look at our user guide seaching for “”precompiled””. The reasion is that OpenLB is written using Tempates that makes the code very flexible. rnrnBest rnMathias

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