AddLayer

Introduction

The tool AddLayer adds one layer of elements with a specified thickness thickness on either on top or bottom of an existing mesh input-mesh and returns the newly generated mesh output-mesh that has an new layer.

One might want to take care that the material groups are reduced, e.g. material groups should not be [0,2,5], but [0,1,2]. The new layer will have the material group ID of the highest material group +1 if not otherwise specified. With the switch --copy-material-ids the material group IDs of the extruded layer will be kept. With the switch --set-material-id the material group id of the new layer can be set to a different value than the default value of ‘highest material group number plus one’.

The tool requires the OGS-6 node ordering in the elements. A different node ordering may lead to unexpected results. In case one might try to change the ordering using the tool NodeReordering.

Usage

AddLayer -i <input-mesh> -o <output-mesh> [-t <thickness>]

Simple example

Usage for example:

AddLayer -i quad.vtu -o quad_with_new_top_layer.vtu -t 1

Application

The tool was used to add a “soil” layer to the hydro-geological model of the Unstrut catchment within the INFLUINS project:

@article{Fischer:2015,
 author = {Fischer, T. and Naumov, D. and Sattler, S. and Kolditz, O. and and Walther, M.},
 category = {Workflows},
 doi = {10.5194/gmd-8-3681-2015},
 journal = {Geosci. Model Dev.},
 pages = {3681–3694},
 title = {GO2OGS 1.0: a versatile workflow to integrate complex geological information with fault data into numerical simulation models},
 url = {https://www.geosci-model-dev.net/8/3681/2015/gmd-8-3681-2015.pdf},
 volume = {8},
 year = {2015}
}

The tool is used in the OGS-GIScape workflow.