What is the boundary condition at a fixed boundary of the inviscid fluid?
- u = 0
- u ∧ n = 0, where n is the unit normal to the boundary
- u . n = 0, where n is the null normal to the boundary
- None of these
Explanation
u . n = 0, where n is the unit normal to the boundary
This is the impermeability condition, which states that the fluid cannot flow through the fixed boundary.
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