HR: 09:45h
AN: MR21A-08    [Abstracts]
TI: Mesh Generation and Microstructure Extraction based on Rock Images
AU: Yu, W
EM: yuwenhui1981@163.com
AF: The University of Queensland, Earth Systems Science Computational Centre, Sir James Foots Building (47A), UQ, St Lucia, Brisbane, QLD 4072, Australia
AU: * Xing, H L
EM: h.xing@uq.edu.au
AF: The University of Queensland, Earth Systems Science Computational Centre, Sir James Foots Building (47A), UQ, St Lucia, Brisbane, QLD 4072, Australia
AU: Liu, E
EM: enlongl@esscc.uq.edu.au
AF: The University of Queensland, Earth Systems Science Computational Centre, Sir James Foots Building (47A), UQ, St Lucia, Brisbane, QLD 4072, Australia
AB: With the development of SEM and/or MRI based techniques, it is getting much easier to get the high quality images of the rocks including the mineralogical and textural information etc.. Once the pixel information for one layer is obtained, a point array description for this rock layer is defined, which includes detailed pixel position, material property information at each pixel position. With information assembled with the images at different layers, the digital image the whole rock volume can be obtained and saved in the corresponding format, such as JPEG. To analyze such related data and apply them into the further numerical modeling, a mesh generator is developed. It has the following functions: (1) Reading and converting the image data (e.g. the JPEG file) to the point data with the material property/microstructure information; (2). Extracting the point with the specified material property; (3) Defining the interfacial position of the different materials/microstructure boundaries; (4) Mesh generation and optimization based on the related available point information (such as keeping the specified interfacial point position) including mesh coarsening/refining; (5) Define the material property at each node and extract the interface boundaries once the mesh generated; (6) Quantify the related information from the rock images and output the mesh for the further numerical (e.g. FEM, FDM, FVM) analysis.
DE: 0530 Data presentation and visualization
DE: 5112 Microstructure
SC: Mineral and Rock Physics [MR]
MN: 2007 Fall Meeting