14. Procedure for Drawing Flow Nets
Flow nets are essential tools for visualizing groundwater flow in soils, constructed through a systematic process of trial and error. The construction requires marking boundary conditions, drawing initial flow lines, and refining the mesh to create orthogonal equipotential and flow lines. Understanding the relationship between flow and equipotential lines is crucial in typical boundary scenarios such as submerged boundaries and impermeable material interfaces.
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What we have learnt
- Flow nets represent contours of equal hydraulic head.
- Equipotential lines are crucial for understanding head losses in flow nets.
- Common boundary conditions for flow nets include submerged permeable boundaries and impermeable material boundaries.
Key Concepts
- -- Flow Net
- A graphical representation detailing the flow of water through soil, showing both flow lines and equipotential lines.
- -- Equipotential Line
- A line where the hydraulic head is constant; essential for determining the head lost between the flow lines.
- -- Flow Line
- Lines that represent the path along which water flows; they are tangential to the flow at any point.
- -- Boundary Conditions
- Constraints that are applied at the boundaries of the flow area; examples include submerged and impermeable boundaries.
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