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What are the laws which govern the friction of fluids?

April 26, 2017fluids friction govern Laws

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What are the laws which govern the friction of fluids?

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1 Friction does not depend in the least on the pressure of the fluid upon the surface over which it is flowing. 2. Friction is proportional to the area of the surface. 3. At a low velocity (not more than one inch per second for water), friction increases with the velocity of the liquid. 4. Friction increases with the roughness of the surface. 5. Friction increases with the density of the liquid.