Boundary Conditions
1. Review the position of
all domain boundaries to ensure that well-posed boundary conditions
can be prescribed.
2. Define the type of
boundary condition to be applied.
- Dirichlet or Neumann. - Steady or unsteady.
- Select boundary types for all free and solid boundaries.
- Note that software-default boundary conditions may not be
appropriate.
- Ensure consistency, especially for high-speed flow.
3. Prescribe steady-state
or time-varying boundary values or fluxes as required at all
boundaries. Give additional consideration to defining heat
and mass transfer boundaries to ensure that these adequately
describe the problem. Check that software default values,
e.g. turbulence parameters, are appropriate.
4. Undertake sensitivity
tests, where necessary, to address uncertainty in boundary
conditions.
- To the location of domain boundaries.
- To the type of boundary condition applied.
- To prescribed boundary values or fluxes.
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