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1. Calculation of the flow field
2. Continuity equation
3. Momentum equations
4. Momentum equations
5. Momentum equations
6. Where is the problem? equations are transient (time dependent)?
we do not have as many equations as we have unknowns?
equations look ugly?
equations are complicated?
equations are nonlinear?
equations are coupled?
the pressure field is unknown?
there is no obvious equation to obtain the pressure field?
7. Some more problemswith pressure
8. Some more problemswith pressure
9. Similar problems with velocity
10. Remedy:the staggered grid