Select LTS via the ddtScheme: ddtSchemes { default localEuler rDeltaT; } The LTS algorithm is controlled with the standard settings in controlDict, e.g.: maxCo 0.5; maxDeltaT 2e-8; with the addition of the optional rDeltaT smoothing coefficient: rDeltaTSmoothingCoeff 0.02; which defaults to 0.02. For cases with reasonably uniform meshes like the forwardStep tutorial LTS does not provide much benefit but for cases with large variation in cell-size like the biconic25-55Run35 tutorial LTS provides significant speed-up to convergence particularly if started from uniform conditions. |
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basic | ||
combustion | ||
compressible | ||
discreteMethods | ||
DNS/dnsFoam | ||
electromagnetics | ||
financial/financialFoam | ||
heatTransfer | ||
incompressible | ||
lagrangian | ||
multiphase | ||
stressAnalysis |