Automatic, Unstructured Mesh Generation for 2D Shelf Based Tidal Models

Numeric models use a collection of triangular facets called elements connected over a domain in what is referred to as a mesh or unstructured grid as the computational basis for calculations. The density of elements in a mesh affects the numeric stability of a model when performing computations. Furthermore, these meshes can be difficult and time consuming to create. This thesis describes an automated process of creating meshes which utilizes local truncation analysis to generate a spatially varied size function. An advancing frontal mesh generation algorithm uses this function to optimize node placement and density. Further analysis to better understand appropriate applications of this technique is also presented. The toolbox was able to create efficient meshes with relatively little user input. The final mesh spacing honored the guidelines from the truncation error analysis and resulted in appropriate mesh density. It was also shown that the process could be applied to several shelf based meshes.

Name thesis:degree_name

MS

Grantor dc:publisher

Brigham Young University - Provo

Author dc:creator

• McDonald, Cameron L.

• automatic mesh generation
• Civil and Environmental Engineering

Language dc:language

English

Repository record dc:identifier

https://scholarsarchive.byu.edu/etd/781

OAI identifier oai:identifier

oai:scholarsarchive.byu.edu:etd-1780