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What is the boundary condition at a fixed boundary of the inviscid fluid?

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What is the boundary condition at a fixed boundary of the inviscid fluid? Answer: u . n = 0, where n is the null normal to the boundary

At a fixed boundary for an inviscid fluid, the boundary condition is that the normal component of velocity is zero, which is represented as \(\mathbf{u}\cdot \mathbf{n}=0\).

Question context

This question is part of ⚙️ Mechanical Eng within the broader 🛠️ Engineering Essentials subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.