Print Email Facebook Twitter Tracer Dispersion: The effect of gravity, inertia & diffusion on fluid flow simulations Title Tracer Dispersion: The effect of gravity, inertia & diffusion on fluid flow simulations Author Hustoft, L. Contributor Berentsen, C. (mentor) Faculty Civil Engineering and Geosciences Department Section Petroleum Engineering Date 2010-01-29 Abstract This project focuses on developing a parallel Navier Stokes simulator capable of modeling single phase dispersion in porous media at the pore scale. Many different factors can contribute to dispersion on a pore scale and this study was limited to fluid flow related factors. The model, including convective motion and diffusive (Fickian) spreading, also incorporates the influences of gravity, inertia and viscous forces on the motion. The precise interaction between these forces and the way these interactions contribute to dispersion is not fully understood from a theoretical point of view. In order to gain insight into dispersion, pore scale simulations are performed in a domain consisting of a few grains. The primary objective of the project was to investigate whether the parallel computational power of NVidia graphics cards (GPUs) could be utilized to tackle the computational intensive Navier Stokes equations. Mainstream NVidia graphics cards (GPUs) appeared to be unable to model the system of equations due to hardware limitations and in addition a conventional parallel processor (CPU) code was developed. Based on a small sample of simulations, diffusion appears to be a significant factor controlling the distribution of the tracer. Inertia may also play a significant role, depending on the alignment relative to pore geometry and gravity. For the case we consider gravity appears to have the least influence on dispersion. Subject dispersiontracersimulation To reference this document use: http://resolver.tudelft.nl/uuid:21e2a318-b08d-4edb-bebf-fcc672b07c39 Part of collection Student theses Document type master thesis Rights (c) 2010 Hustoft, L. Files PDF msc.pdf 965.5 KB Close viewer /islandora/object/uuid:21e2a318-b08d-4edb-bebf-fcc672b07c39/datastream/OBJ/view