 Kinematic boundary condition for a free-surface graph

ID: kinematic-boundary-condition-for-a-free-surface-graph

Codex  0 Created 2026-09-24 Updated 2026-09-24

z = η (x, y, t)

(u, v, w)

, material conservation of

z - η

gives

w = η_{t} + u η_{x} + v η_{y} = \frac{Dη}{D t}

on the surface.

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