Once a complete model is created, the user can simulate the model to update the state of the structure. For diffusion simulation, a -transientSolve is usually performed for a certain time interval. A -staticSolve is also available for solving elliptic systems of PDEs.
The timestepping algorithm for -transientSolve is the best available from a robustness perspective. The present implementation defaults to -trbdfSolve, a composite, single step method composed of a trapezoid partial step followed by a second order backward difference partial step. A generalized trapezoid algorithm is also available via -genTrapSolve.