H. M. Haitjema's Analytic Element Modeling of Groundwater Flow PDF

By H. M. Haitjema

ISBN-10: 0123165504

ISBN-13: 9780123165503

Modeling has turn into an important device for the groundwater hydrologist. the place box info is proscribed, the analytic point procedure (AEM) is quickly turning into the modeling approach to selection, in particular given the provision of cheap modeling software program. Analytic point Modeling of Groundwater move presents the entire fundamentals essential to process AEM effectively, together with a presentation of basic thoughts and a radical advent to Dupuit-Forchheimerflow. This booklet is exclusive in its emphasis at the real use of analytic aspect types. Real-world examples supplement fabric awarded within the text.An academic model of the analytic aspect software GFLOW is integrated to permit the reader to breed some of the options to groundwater circulation difficulties mentioned within the textual content. Researchers and graduate scholars in groundwater hydrology, geology, andengineering will locate this publication an crucial resource.** offers a basic creation to using the analytic point method.* deals a step by step method of groundwater movement modeling.* comprises an academic model of the GFLOW modeling software program.

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6. 43) where l is the length of the confined aquifer zone, and where H is the head at x = I. 44) contain the unknown position (x = l) of the interface between confined and unconfined flow. We need an additional equation to resolve 1. T h a t equation is obtained by considering continuity of flow across the interface between confined and unconfined flow. Denoting 36 CHAPTER z 3. "/:" / / >, / / . 6" 0ne-dimensional combined confined and unconfined flow. 44) finally allows us to calculate the head for every value of x in the aquifer.

Just like the potential function, this stream function satisfies the equation of Laplace. We will first demonstrate the existence of ~. 9, is tangential to a streamline, so that t a n ~ . 66) , The x and y values of points on the streamline are functions of position measured by the curvilinear coordinate s along the streamline. 1. ELEMENTARY 43 SOLUTIONS where use has been made of Darcy's law for Qi. 69) in terms of partial derivatives yields d~ ds 0r d x Off2 d y --%. 71) 0 ~ - - % . 71) are called the C a u c h y - R i e m a n n equations.

On each side, only one component of the specific discharge vector is pointing into or away from the block; the other two components are parallel to the side. 4 is only the y-component of the specific discharge vector, the x- and zcomponents being parallel to that side. We will assume that the specific discharge at the center of a side represents the average for that entire side, an assumption which will be more accurate the smaller the block. Water balance for the block means total inflow = total outflow CHAPTER 18 2.

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Analytic Element Modeling of Groundwater Flow by H. M. Haitjema

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