Professor Dr.-Ing. Wen-Hsing Chiang, Professor Dr.-Ing.'s 3D-Groundwater Modeling with PMWIN: A Simulation System for PDF

By Professor Dr.-Ing. Wen-Hsing Chiang, Professor Dr.-Ing. Wolfgang Kinzelbach (auth.)

ISBN-10: 366205549X

ISBN-13: 9783662055496

ISBN-10: 3662055511

ISBN-13: 9783662055519

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Extra resources for 3D-Groundwater Modeling with PMWIN: A Simulation System for Modeling Groundwater Flow and Pollution

Example text

9). The options in the Results Extractor dialog box are grouped under four tabs - MODFLOW, MOC3D, MT3D and MT3DMS. In the MODFLOW tab, you may choose a result type from the Result Type drop-down box. You may specify the layer, stress period and time step from which the result should be read. The spreadsheet displays aseries of columns and rows. The interseetion of a row and column is a cell. Each cell of the spreadsheet corresponds to a model cell in a layer. Refer to Chap. 5 for more detailed infonnation about the Results Extractor.

L·rI"II~1 ~I'~ ~r, . ;", ' :;' ";': ' ... 18. The capture zone ofthe pumping weH (with vertical exaggeration = 10) " 2 Your First Groundwater with PMWIN 32 no -flow bou Fig. 19. 1 RCHIEVr op,onsl CunentTlme T'cctJng 5lep Unrt I S~es. o'ron MOde Flowllnes, use the r. hon P r Partlele ••top. ""an iI1ey entet cello wMlntemlll sink. Carocel Fig. 20. 3 Simulation of Solute Transport Basically, the transport of solutes in porous media can be described by three processes: advection, hydrodynamic dispersion and physical, chemical or biochemical reactions.

The MT3D and MOC3D models use the method-ofcharacteristics (MOC) to simulate the advective transport, in which dissolved chemicals are represented by a number of particles and the particles are moving with the flowing groundwater. 4 for details. The hydrodynamic dispersion can be expressed in terms of the dispersivity [L] and the coejJicient of molecular diffusion [L2r- 1] for the solute in the porous medium. The types of reactions incorporated into MOC3D are restricted to those that can be represented by a first-order rate reaction, such as radioactive decay, or by a retardation factor, such as instantaneous, reversible, sorption-desorption reactions governed by a linear isotherm and constant distribution coefficient (~).

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3D-Groundwater Modeling with PMWIN: A Simulation System for Modeling Groundwater Flow and Pollution by Professor Dr.-Ing. Wen-Hsing Chiang, Professor Dr.-Ing. Wolfgang Kinzelbach (auth.)


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