The cavity flow example (
examples/cavity) provides a means to
test advection of momentum, no-slip boundary conditions, and rigid lid
conditions. There are two examples,
comprise a cavity flow simulation in the XY and XZ planes, respectively.
testXY example demonstrates use of a stretched grid and no-slip
boundary conditions. The
testXZ example shows usage of the no-slip
boundary condition as a means to force flows within the domain and highlights
the utility of a rigid lid computation. These cases provide a starting point
for examination of the effect of numerical methods employed on balances
between the nonlinear advection of momentum, the pressure gradient,
and viscous dissipation.