A flow net is a graphical representation of two-dimensional steady-state groundwater flow through aquifers. Construction of a flow net is often used for solving groundwater flow problems where the geometry makes analytical solutions impractical.
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What is flow net in seepage?
A flow net is a graphical representation of two-dimensional steady-state groundwater flow through aquifers. Construction of a flow net is often used for solving groundwater flow problems where the geometry makes analytical solutions impractical.
How do you make a flow net seepage?
Steps for Drawing a Flow Net Using Pencil and Paper
- Draw the outline of the flow system to scale and label the nature of each boundary.
- Draw equipotential lines along the boundaries where a single value of hydraulic head is specified along the boundary.
- Draw flow lines along no-flow boundaries.
What are the application of flow net?
Flow net applications include Calculation of uplift pressure, Exit gradient / Piping, Heaving and Pore Water pressure.
What is flow net principle?
Properties of Flow Net The angle of intersection between each flow line and an equipotential line must be 90o which means they should be orthogonal to each other. Two flow lines or two equipotential lines can never cross each other. quantity of seepage occurs in each flow channel.
Why flow net is important?
Flow nets provide a general knowledge of the regional groundwater flow patterns that the hydrologist can use to determine such information as areas of recharge and discharge. Freeze and Cherry (1979, pg. 168) have stated that flow nets are an important concept of hydrology.
What is NF and ND?
Nd = number of potential drops Nf = number of flow channels h = total head loss q = total quantity of unit flow.
Which is the most commonly used method of construction of flow net?
5) Solution of Laplace equation/Analytical method.
What is flow net how it is useful in seepage analysis in earthen dam?
Flow nets are the graphical representation of water movement through the soil and it is used to analyze the uplift water pressure and seepage amount. The flow nets are comprised of flow lines and equipotential lines, which is a graphical representation of Laplace’s equation. Flow net & Seepage in Earth Dams.
What is NF and ND in flow net?
Flow lines (Nf) and Equipotential lines (Nd) ď ą Flow lines are lines which represent the path of flow through a soil. It is a line along a water particle will travel from upstream to the down stream side in the permeable soil medium ď ą Equipotential lines represent all points of equal pressure head.
What is flow net and write its properties?
Properties of flow net are as follows: The angle of intersection between each flow line and an equipotential line must be 90o which means they should be orthogonal to each other. Two flow lines or two equipotential lines can never cross each other. quantity of seepage occurs in each flow channel.
What are the properties of a flow net?
What are the components of a flow net?
A flow net consists of two sets of lines which must always be orthogonal (perpendicular to each other): flow lines, which show the direction of groundwater flow, and equipotentials (lines of constant head), which show the distribution of potential energy.
What is NF in seepage?
2.12 Calculation of seepage quantities from a flow net. Nd = number of potential drops Nf = number of flow channels h = total head loss q = total quantity of unit flow.
What are the properties of flow net?
Properties of flow net are as follows:
- The angle of intersection between each flow line and an equipotential line must be 90o which means they should be orthogonal to each other.
- Two flow lines or two equipotential lines can never cross each other.
- quantity of seepage occurs in each flow channel.
Why are flow Nets important?
What is flow net and its characteristics?
A Flow net is a graphical representation of flow of water through a soil mass. It is a curvilinear net formed by the combination of flow lines and equipotential lines. Properties and application of flow net are explained in this article.
What are the components of flow net?