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Fluid simulation using LatticeBoltzmann

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Hello, I try to simulate a fluid by LatticeBoltzmann method. The method works great if there is no external forces are added. But when trying to add an external force like gravity for example. The whole system after few steps are gradually disappear!! I add the force to the overall velocity of some lattice site. Then computer the new equilibrium values for the distribution function!!, like [Buick and Greated, 2000] suggested. The all distribution function values are tend to zero and then tend to negative values!! The whole system Mass, Momentum and Energy must not be lost!! Thanks, Mustafa ELBanna

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This topic is 4203 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

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