 Velocity gradient of translating-sphere Stokes flow

ID: velocity-gradient-of-translating-sphere-stokes-flow

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

u = A (r) U + B (r) (U \cdot x) x

reduces its gradient to radial derivatives of

A, B

plus the product rule for

(U \cdot x) x

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