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I've tried to simulate 1km chimney in Comsol, but I cannot make it converge to a solution. If anyone is interested, the model is here https://mega.nz/#!jFgBxI6J!jdxloYFwcuk_YyGcIMlOmJTKcPbxyD2B4... (may be I'm doing something wrong with simulation parameters, help would be very much appreciated!)


I don't have Comsol. Does it make nice graphics? Can you post a screenshot (in imgur)?

[Disclaimer: I think this idea doesn't work. If you wish to make it work try adding a huge glass bell like the one explained in other comment.]


Yes, it does, the problem is, the basic setup isn't converging to solution so nothing to plot, which is unusual and probably means I choose wrong boundary conditions or something.




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