Dimensions: $\begin{bmatrix}M & L & T & \theta & Q & I & LI\end{bmatrix}$ Polymesh: → blockMeshDict - strongly hexagonal (pls no triangles) - vertices are numbered from beginning to end Based type: Primitive type: fixedValue, zeroGradient, etc Derived type: inletOutlet fvScheme: euler: 1st order backward euler backward: 2nd order backward Euler CrankNicolson: $\phi$ =0 (pure euler) $\phi$ = 1/2 recommended $\phi$=1 (pure cranknicolson) fvSolution