# kEpsilon vs kkLOmega RANS simulations

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 October 4, 2022, 17:32 kEpsilon vs kkLOmega RANS simulations #1 Senior Member   Farzad Faraji Join Date: Nov 2019 Posts: 204 Rep Power: 7 Hello all I want to use kkLOmega instead of kEpsilon for my RANS turbulent model since kkLOmega can capture transition between laminar to turbulence and my case is laminar in most of the geometry. Using kEpsilon, I can run the simulation without any problem, and in the other hand when I want to use kkLOmega, I get below output and code diverges; Code: ```surfaceFieldValue CCAaverageWallShearStresses: total faces = 80800 total area = 0.000424686 wallShearStress wallShearStress1 write: writing object wallShearStress min/max(Artery_CCAwall) = (-0.0940689 0 -0.0936459), (0.0903153 0.00531667 0.0936459) min/max(Artery_ICAwall) = (-0.0651761 -0 -0.0651761), (0.0652406 0.00980282 0.0652406) min/max(Artery_ECAwall) = (0 0 0), (0 0 0) min/max(Artery_CCAin) = (-0.143562 0.0864451 -0.143553), (0.137284 0.358887 0.143553) min/max(Artery_ICAout) = (-0.0157779 0.0636099 -0.015537), (0.015537 0.268776 0.015537) min/max(Artery_ECAout) = (0 0 0), (0 0 0) Time = 1 smoothSolver: Solving for Ux, Initial residual = 1, Final residual = 0.053834, No Iterations 2 smoothSolver: Solving for Uy, Initial residual = 1, Final residual = 0.0586568, No Iterations 2 smoothSolver: Solving for Uz, Initial residual = 1, Final residual = 0.0518649, No Iterations 2 GAMG: Solving for p, Initial residual = 1, Final residual = 0.0514959, No Iterations 10 GAMG: Solving for p, Initial residual = 0.0671865, Final residual = 0.0017498, No Iterations 2 time step continuity errors : sum local = 3.54849, global = 0.043344, cumulative = 0.043344``` Why continuity errors happens and what should I do? Thanks, Farzad

 Tags kepsilon, kklomega, openfoam, rans, turbulence