Underworld Underworld/BaseApps/RayleighTaylor.xml StgFEM_FrequentOutput Underworld_Vrms StgFEM_CPUTime Everywhere Box 0.0 4.0 0.0 0.35 0.0 4.0 Box 1.2 3.4 0.90 1.0 1.25 2.75 PolygonShape 1.25 2.75 1.20 1.0 1.20 0.9 1.02 0.8 1.02 0.9 Union mainSlab slabPerturbation MaterialViscosity 1.0 RheologyMaterial upperMantleShape 0.0 upperMantleViscosity MaterialViscosity 100.0 RheologyMaterial lowerMantleShape 0.0 lowerMantleViscosity MaterialViscosity 200.0 Byerlee StrainRateField geometry linearMesh 0.04 0.25 RheologyMaterial slabShape 1.0 slabViscosity slabYielding MaterialFeVariable picIntegrationPoints Slab context linearMesh MaterialFeVariable picIntegrationPoints LowerMantle context linearMesh Stokes_SLE_UzawaSolver preconditioner 1.0e-5 5000 true ./SlabViewports_Particles_Workshop.xml f true t 2 t 2 f 2 2 f 100 1 ./ ./checkpoints/ 1.0 100 100 3 40 20 40 1 0.0 0.0 2.0 4.0 1.0 4.0 True True 5 20 Underworld/VariableConditions/velocityBCs.freeslip.xml