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[ESPResSo-users] Multi-realaxation time model

From: Wink, Markus
Subject: [ESPResSo-users] Multi-realaxation time model
Date: Tue, 30 Jun 2015 07:16:55 +0000

Dear ESPResSo users and developers,


I have a question concerning the MRT Lattice Boltzmann model used in ESPResSo. In MRT the linearized collision operator is transformed to momentum space via the collision matrix M. I have found the collision matrix in the file lb-d3q19.hpp.

But I didn’t find the relaxation parameters.


Shouldn’t there be some kind of diagonal matrix S containing the relaxation rates for the different moments?

Does anybody know where I can find them or tell me which relaxation rates ESPResSo is using for the MRT algorithm?








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