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Mulitiple particle timesteps per liquid phase timestep

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Old   July 14, 2016, 10:55
Default Mulitiple particle timesteps per liquid phase timestep
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Piotr
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Hi everyone!

First of all I would like to say hello to everyone here, this forum was really helpful for me for a long time. But know I faced an issue for which I couldn't find a good answer here.

I'm curious if it's possible in OpenFoam 3.0 to define multiple particle timesteps for one liquid phase timestep. Is there any ready utility to do that, or I would have to implement it myself? If latter, had anyone any experience with that?

The reason I ask about that is the problem with the convergence of my lagranian particle tracking solver (with basicKinematicCollidingCloud). I think it might stem from the fact, that I use a large Co (around 3-5), because I need to resolve dozens of seconds for my flow... I think resolving particles more often than liquid phase could significally improve convergence.

If this topic was already discussed (and I overlooked it looking for that), I am really sorry! Please just send a link for that.

Best regards!
Piotr
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convergence, kinematiccloud, openfoam, timestep


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