Print Email Facebook Twitter Numerical study on dispersion of dilute glycerol-water mixtures in channel flow Title Numerical study on dispersion of dilute glycerol-water mixtures in channel flow Author Ruoff, M.C. Contributor Berentsen, C.W.J. (mentor) Faculty Civil Engineering and Geosciences Department Section Petroleum Engineering Date 2011-09-22 Abstract In this work we developed a numerical model for channel flow on a pore or micro scale. A straight channel was simulated with a flow regime of Re=0.03 and Re=0.3 (comparable to typical fluid flow in petroleum reservoirs) to visualize the characteristics of flow and dispersion up to the Fickian limit. The objective of this study was to quantify the effect of the dilute assumption on the channel averaged longitudinal dispersion of glycerol in water flow and to qualitatively assess the specific contribution of the diffusion, viscosity and density of the solute. In all cases a mixture with a concentration of 200 mol/m3 solute was injected into the channel. The ideal tracer flow model was verified by comparing it to theory. A literature study on the properties of glycerol-water mixtures was done to incorporate the correct property behaviour for variable glycerol concentration. In addition, the creeping flow assumption was tested. Detailed analysis of the changes in flow velocity components and concentration distribution was performed. The dilute, non-dilute and creeping flow models have also been tested and analysed for a tenfold increased velocity. For the base model (with Re=0.03), diffusion showed to be the main contributor to a different dispersive behaviour, followed by viscosity and density respectively. Viscosity and density variability caused changes in the velocity profiles of the flow. Longitudinal dispersion appeared to be 0.35% higher when all variability was included, compared to an ideal tracer flow simulation. Higher flow velocity (Re=0.3) appears to increase the dispersion differences, mainly caused by viscosity variability. Subject dispersionchannelglycerolwaterdilutepore scale To reference this document use: http://resolver.tudelft.nl/uuid:080eb125-6477-45e0-9f0e-d8bb1621c977 Part of collection Student theses Document type master thesis Rights (c) 2011 Ruoff, M.C. Files PDF MSc_Thesis_Matthijs_Ruoff.pdf 5.94 MB Close viewer /islandora/object/uuid:080eb125-6477-45e0-9f0e-d8bb1621c977/datastream/OBJ/view