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This document discusses friction laws for fluid dynamics. It begins by defining drag coefficients that quantify forces on a body in terms of shear and pressure stresses. It then discusses friction laws for flat plate boundary layers and pipe flow. For flat plates, it derives an equation relating skin friction coefficient to Reynolds number and presents power law approximations. For pipe flow, it derives an equation relating average velocity to wall friction velocity.
- Author
- fuji
- Language
- EN