About Porous Microstructure Analysis (PuMA)

PuMA is able to generate artificial microstructures that mimic real-world materials and to compute morphological properties such as porosity, volume fractions, pore diameter, and surface area. Additional capabilities include the determination of effective thermal conductivity, permeability, tortuosity and diffusivity from the continuum, and techniques to determine local material orientation.

PuMA simulation results

PuMA results

Choose Workflows > Porous Microstructure Analysis (PuMA) on the menu bar to open the Porous Microstructure Analysis (PuMA) dialog. The dialog includes a Sample Generator tab, on which you can create a number of different artificial microstructures, and a Solver tab, on which you can compute various material properties from generated samples or loaded datasets.

You can generate random fiber and random sphere specimens with PuMA's Sample Generator. You can select a size for the datasets and effective porosity, as well as specify a number of additional parameters such as radius, length, orientation, and intersection for fibers. The parameters for spheres include diameter and intersection.

Sample Generator tab

Sample Generator tab

Inputs for PuMA's Solver include generated random fiber and sphere specimens, as well as datasets of real-world materials and segmentations saved as multi-ROIs. You can compute continuum tortuosity, permeability, thermal conductivity, as well as determine local orientation. In addition, you can publish 3D images of concentration fields for tortuosity, velocity and pressure for permeability, as well as temperature fields and flux for thermal conductivity.

Solver tab

Solver tab

The following are the recommended minimum requirements for working with PuMA, which can vary depending on the material properties that are studied.

  • 16-32 GB of RAM for small to medium simulations.

  • 32+ GB of RAM for larger simulations.

This feature for numerical simulation and material property characterization, which is under continued development, is available to non-commercial license holders and is also included for commercial license holders in this software release. However, holders of a commercial license will need to upgrade their current license to continue using PuMA in future releases of Dragonfly. Please contact our Sales Team (sales.dragonfly@comet.tech) for all questions about licensing terms and costs.