|Software • mView • nSights • paCalc|
mView was originally developed to support the pre-processing, post-processing and visualization requirements of the numeric models used on the Yucca Mountain project (TOUGH, FEHM, NUFT, ASHPLUME and WAPDEG). Geofirma has expanded mView to support additional models (MODFLOW/MODPATH, FRAC3DVS, SWIFT), to integrate model results with field data (borehole logs, geophysics, sampling results), and to provide extensive model pre- and post-processing capabilities. mView is licensed software available from Geofirma as a beta version. Support and training is also available.
mView is a numeric modelling support system designed to process, analyze, and visualize complex geo-scientific data. mView supports all facets of the numeric modelling process. Click processes below for more information.
At the start of the modelling process, mView provides direct integration of geologic, hydrogeologic and cultural data to create an integrated site model (ISM). ISM data may include:
Data may be imported into mView using standard formats such as dxf, ArcInfo export, Surfer grids, as well as generic table, grid and XYZ data.
Once the data is within mView, the data can be manipulated, visualized and exported. For example, mView’s data extraction capabilities allow borehole geological information and water levels to be extracted to assist in generating surfaces.
mView supports multiple coordinate systems, and provides transparent coordinate system transformations. For example, UTM grids and site grids can be easily used together. There are no limits on the number of coordinate systems that can be defined and used concurrently.
mView has a complete set of tools for generating 2D and 3D finite difference and finite element grids. Model specific coordinate systems can be defined and grid layers generated based on ISM surfaces or on other criteria such as thickness, absolute elevation, etc.
Grid properties can be set using a variety of methods:
Discrete Fracture Networks
mView provides support for delineating discrete fracture features on a rectangular model grid. Given a three-dimensional polygon representation of actual fractures, mView will calculate the element faces that optimally represent the fractures.
mView’s data index facilities are unique. Individual element/node indexes or groups of indexes can be extracted or generated according to a wide variety of criteria. These indexes can then be used in setting model properties and boundary conditions, and in visualizations. For example, indexes intersecting surface water features from an ISM can be used to selectively set top surface boundary conditions.
Generating Input Files
After grids have been developed and properties assigned, general model input files can be generated. Model specific input files can be generated for FRAC3DVS and MODPATH.
SWIFT Tabular output files can also be imported directly into mView.
Unlike many software products, mView is not limited to analyzing and visualizing model results from one model
Intermediate and final output of analysis calculations are available for visualization.
An example analytic calculation that determines the advective velocity distribution at different model elevations is as follows:
mView has two general categories of visualization: spatial and non-spatial. Spatial plots are linear and scaled by distance in two or three dimensions, and are used for most mView plotting. For example, spatial plots are used for plotting concentration plumes. Non-spatial plots may be linear or log scale for any axis (2D or 3D), and are used for plotting data such as time series data or CDFs.
There are no limits to the number of plots that can be displayed simultaneously. Each plot is displayed in a separate top level window, and can be cascaded, tiled or minimized. In addition, mView’s composite plot type allows multiple individual plots to be displayed in the same window.
2D Spatial Plots
2D spatial plots are oriented in plan view (XY) or as vertical slices (XZ and YZ) referenced to a coordinate system. Data that can be plotted in 2D include contour lines, color fills, velocity vectors, node/element outlines, symbols and identifiers, boreholes, particle tracks, and context data.
3D Spatial Plots
3D spatial plots are also referenced to a single coordinate system. All data presentations available for 2D plots are available for plotting on slices in 3D plots. Additionally, isovolumes, color fills, node/element outlines, boreholes and particle tracks plot as fully three dimensional.
mView is capable of plotting 3D data using a transparency function. For example, the figure shown below plots a series of concentration isovolumes intersecting a local fracture system.
Output from mView is available as bitmaps, jpegs, and vector postscript files. Additionally, the Windows clipboard can be used to copy/paste plot windows directly into applications such as Word and PowerPoint. Animation support is provided by automatically generating sequentially numbered files, for processing by third-party applications.
Othman Nasir attended the 5TH DECOVALEX 2015 Workshop organized by the IRSN at Avignon and the Tournemire Rock Laboratory, France. DECOVALEX is an international research project to support the development and validations of mathematical models of coupled Thermal-Hydrological-Mechanical-Chemical processes in geological media and EBS materials for the DGR.
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