![]() Being able to mesh multiple segmented parts solves the problem of working with very complex scans when generating models.Īs discussed in our post on the Simpleware Physics Modules, our software’s image-based techniques can also be used to calculate effective material properties from scanned samples. For digital rock physics, models can be created that support multiple phases and enable FEA/CFD of stress and permeability, among other physical stimuli. Mesh inspection tools are also available to ensure that the model exported to FE and CFD solvers is robust. +FE Free re-meshes multi-part surfaces while preserving the original geometry generated using a grid-based approach. It is also possible to use +FE Free to adaptively re-mesh data. This image-based approach takes into account partial volume effects, and preserves topology and volume from the original scan. ![]() The grid-based algorithm developed by Simpleware generates mixed hexahedral and tetrahedral meshes – voxels are effectively converted directly to hex elements and then converted to tet elements at the interfaces for a smooth surface. ![]() There are several meshing approaches available when working with rock physics data, including a grid-based mesher (+FE Grid), and an adaptive meshing algorithm (+FE Free). We have developed image-based meshing techniques that allow robust FE and CFD models to be generated directly from image data with conforming interfaces and shared nodes models are suitable for digital rock physics simulation. With this approach, it is possible to quickly visualize, segment and obtain statistics from samples taken from 3D scans. We have also developed image processing and measurement features that are useful for analysing multi-phase and porous materials, including watershed segmentation for analysing particles, and centerlines. Mask and model statistics can be quickly obtained for the volume and surface area of data, as well as on tortuosity, connectivity and pore sizes. Options are also available for obtaining quantified data on the properties of samples, including porosity analysis. In addition, filters can be applied to reduce scan noise and better visualize image data, making it easier to view different features. From this image data, different material phases can be segmented into regions of interest (ROIs) using semi-automatic and manual tools, for example to create solid and fluid masks. Our solution for digital rock physics starts with visualizing image data, acquired as a stack of images that can be converted from 2D pixels into 3D pixels (voxels) in ScanIP.
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