The ability to understand and construct flow nets is an essential skill of a groundwater hydrologist. Although other books published by The Groundwater Project also discuss flow nets, the present book gives an in-depth treatment, in particular, how to graphically construct flow nets. Through this pencil-and-paper exercise, students can gain a ...
2.5 Drawing a Flow Net for an Unconfined System with a Water …
Unconfined groundwater systems have a water table boundary which requires special consideration when drawing a flow net because the location of the water table boundary is not known until after the flow net construction is completed. Such systems may also have a seepage face, where groundwater seeps out along a sloping section of ground surface.
Chapter 5: Flow Nets | Freeze and Cherry Groundwater Book
In Section 2.11 and Figure 2.25, we saw that a flow net can be viewed as the solution of a two-dimensional, steady-state, boundary-value problem. The solution requires knowledge of the region of flow, the boundary conditions on the boundaries of the region, and the spatial distribution of hydraulic conductivity within the region.
3 Exercises – Graphical Construction of Groundwater Flow Nets
Draw and label a flow net of the system. Calculate the discharge through the system using units of cubic meters and seconds. Click here for the solution to Exercise 4
Graphical Construction of Groundwater Flow Nets
This book explains graphical construction of groundwater flow nets and provides exercises and videos links to help readers gain a deeper and intuitive understanding of groundwater flow. The construction of a groundwater flow net begins with the definition of the flow domain and the boundary conditions along the domain boundary.
Box 4 Drawing a Flow Net for an Unconfined System with a Water …
Begin the steps for drawing a flow net as described in section 2.3 and shown in Figure Box 4-1. The position of the water table is not known until the flow system is revealed by following the rules for drawing a flow net, so the initial sketch indicates …
Basic Assumptions for Drawing a Flow Net: - material zones are homogeneous - isotropic hydraulic conductivity-fully saturated - flow is steady, laminar, continuous, irrotational - fluid is constant density - Darcy's Law is valid-Drawn parallel to flow Flow into the zone between 2 flow lines = flow out of the zone
a) Oblique aerial view of multi-well pads in Permian
The flow-cell model uses a type well and can forecast the production rate and estimated ultimate recovery (EUR) of newly planned wells, accounting for changes in completion design (fracture ...
A flow net is a graphical solution to the equations of steady groundwater flow. 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. Flow nets ...
flow net is the set of equipotential lines (constant head) and the associated flow lines (lines along which groundwater moves) for a particular set of boundary conditions. For a given GW flow equation and a given value of K, the boundary conditions completely determine the solution, and therefore a flow net.