Reply To: Reference for strain rate tensor prefactor in powerLawBGKdynamics
OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › Reference for strain rate tensor prefactor in powerLawBGKdynamics › Reply To: Reference for strain rate tensor prefactor in powerLawBGKdynamics
Great thanks for your detailed explanation.
I think the paper by Chai et al. (2011) is more clear. The pi in openlb stands for the second order moment of nonequilibrium distribution (the summation part of eq.(18) in Chai et al. (2011)). And your prefactor ‘pre2’ is the square of the prefactor before the summation part of eq.(18). Other formulation in your codes are consistent with eq.(1-4).
Chai2011 – Multiple Relaxation Time Lattice Boltzmann Model for Generalized Newtonian Fluid Flows.pdf