Print Email Facebook Twitter Evaluation of the interface-capturing algorithm of OpenFoam for the simulation of incompressible immiscible two-phase flow Title Evaluation of the interface-capturing algorithm of OpenFoam for the simulation of incompressible immiscible two-phase flow Author Raees, F. Van der Heul, D.R. Vuik, C. Faculty Electrical Engineering, Mathematics and Computer Science Date 2011-12-31 Abstract The Mass-Conserving Level-Set method combines the efficiency of a Level-Set algorithm with the mass conserving properties of the Volume Of Fluid method. It avoids the work intensive interface construction of the former method and imposes a mass-conserving correction to the distance function of the latter. The interface capturing algorithm implemented in OpenFOAM uses a compressive convection scheme for the evolution of the VOF colour function, as opposed to an interface reconstruction algorithm. Therefore, it can be assumed to match the efficiency of the MCLS method. Further analysis of the accuracy of the algorithm is required to make a fair comparison. In this report the accuracy will be evaluated for the simulation of incompressible, immiscible two-phase flow in two and three spatial dimensions. Three representative test cases are considered: The advection of a spherical bubble for an imposed, constant velocity field (2D), a rising (buoyant) bubble in a quiescent fluid (2D and 3D) and a stationary bubble in a stationary fluid (2D and 3D). The computed results are compared with results obtained with the Mass-Conserving Level-Set method of [8], benchmark results of [5] and other references. The compressive scheme accurately conserves mass, but shows large spurious currents for the test cases with surface tension. Additionally, the error in the predicted rise velocity of the gas bubble is large in comparison with that of the MCLS method. To reference this document use: http://resolver.tudelft.nl/uuid:aa0127ff-2ef3-4824-a519-d6fb74a53be7 Publisher Delft University of Technology, Faculty of Electrical Engineering, Mathematics and Computer Science, Delft Institute of Applied Mathematics ISSN 1389-6520 Source Reports of the Department of Applied Mathematical Analysis, 11-07 Part of collection Institutional Repository Document type report Rights (c)2011 Raees, F., Van der Heul, D.R., Vuik, C. Files PDF 11-07_Fahim_report.pdf 1.46 MB Close viewer /islandora/object/uuid:aa0127ff-2ef3-4824-a519-d6fb74a53be7/datastream/OBJ/view