Uniform fluid flow occurs, when the derivative of the flow variables satisfy the following condition.
The hydraulic radius for flow in a rectangular duct of cross-sectional dimension H, W is
Drag force on the float of a rotameter is(where Q = flow rate of the
Steady fluid flow occurs, when the derivative of flow variables satisfy the following condition.
The Kozney-Carman equation, rewritten in terms of non-dimensional numbers gives` (Delta`P/`rho` u2) proportional to