A flow net is used in fluid mechanics to determine
- AVelocity distribution in laminar flow
- BPressure variation in turbulent flow
- CSeepage flow and hydraulic gradientsCorrect
- DVariation of viscosity in a liquid
Solution
Concept
Purpose of a flow net
Step-by-step solution
1. A flow net consists of flow lines and equipotential lines. 2. It is used to find seepage quantity, pore pressure and hydraulic gradient (exit gradient).
Explanation
A flow net is a graphical solution of Laplace's equation for seepage under dams and through earth dams, used to find seepage flow, uplift pressure and hydraulic gradients.
Shortcut
Flow net = seepage + gradients + uplift.
Common mistake
Choosing a fluid mechanics option because the question mentions fluid mechanics.
Correct answer: C) Seepage flow and hydraulic gradients