Difference between revisions of "Model setup"
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== Model setup for fracture flow and transport in limestone aquifers == | == Model setup for fracture flow and transport in limestone aquifers == | ||
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=== Modeling steps === | === Modeling steps === | ||
This chapter gives step-by-step instructions for the setup of a model to simulate flow and transport in a fractured limestone aquifer. | This chapter gives step-by-step instructions for the setup of a model to simulate flow and transport in a fractured limestone aquifer. | ||
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The following list shows the typical steps to setup a model for contaminant transport in a fractured limestone aquifer: | The following list shows the typical steps to setup a model for contaminant transport in a fractured limestone aquifer: | ||
| − | # Conceptualization and setup of a conceptual model | + | # Conceptualization and setup of a conceptual model including geology and hydrogeology |
# Formulation of the modeling objectives | # Formulation of the modeling objectives | ||
# Choice of model complexity and modeling scale | # Choice of model complexity and modeling scale | ||
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# Critical evaluation of the modeling results | # Critical evaluation of the modeling results | ||
# Formulation of mass balances to check the model | # Formulation of mass balances to check the model | ||
| + | # Model calibration | ||
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| + | === Geologic modeling === | ||
| + | Boreholes can give valuable information about the geology. | ||
| + | Bits of geologic knowledge can be connected to establish a geologic model, that shows different geologic layers, to which properties can be assigned, and other relevant geologic information. | ||
| + | [[File:SE-NO_profil.jpg |border|550px|Example geologic profile of a Geoscene3D model.]] | ||
=== Flow chart giving an overview of the individual steps === | === Flow chart giving an overview of the individual steps === | ||
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=== Model reporting === | === Model reporting === | ||
Revision as of 08:35, 4 January 2017
Contents
Model setup for fracture flow and transport in limestone aquifers
Modeling steps
This chapter gives step-by-step instructions for the setup of a model to simulate flow and transport in a fractured limestone aquifer.
The following list shows the typical steps to setup a model for contaminant transport in a fractured limestone aquifer:
- Conceptualization and setup of a conceptual model including geology and hydrogeology
- Formulation of the modeling objectives
- Choice of model complexity and modeling scale
- Data acquisition - measurements to obtain relevant model parameters (see list of parameters for each model)
- Delineation of the model domain based on physically meaningful boundaries (f.e. head isolines, no-flow boundaries)
- Implementation of parameters for selected units in the model domain (homogeneous/heterogeneous)
- Choice of boundary conditions for the flow and the transport model
- Setup of sources and sinks: Definition of wells
- For transient models: definition of initial conditions
- Mesh generation: Start with coarse mesh, refine later
- Simulation
- Critical evaluation of the modeling results
- Formulation of mass balances to check the model
- Model calibration
Geologic modeling
Boreholes can give valuable information about the geology.
Bits of geologic knowledge can be connected to establish a geologic model, that shows different geologic layers, to which properties can be assigned, and other relevant geologic information.
Flow chart giving an overview of the individual steps
Model reporting
Example: Setup of models for a contaminated site with a fractured limestone aquifer (Akacievej, Hedehusene)
The setup of a discrete-fracture model in 2D in COMSOL Multiphysics is described in the following documetn:
The typical workflow for modeling a contaminated site will be demonstrated using an example field site close to Copenhagen.
Example: Setup of models for a field site (Akacievej, Hedehusene)
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