Computing three-dimensional two-phase flows with a mass-conserving level set method |
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Authors: | S P van der Pijl A Segal C Vuik P Wesseling |
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Affiliation: | 1. Centrum voor Wiskunde en Informatica (CWI), The Dutch National Research Centre for Mathematics and Computer Science, P.O. Box 94079, 1090?GB, Amsterdam, The Netherlands 2. Faculty of Technical Mathematics and Informatics, Delft University of Technology, Mekelweg 4, 2628 CD, Delft, The Netherlands
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Abstract: | A method is described to compute three- dimensional two-phase flow, allowing large density ratios and coalescence and break-up of bubbles. The level set method is used to describe interfaces, and the volume-of-fluid method is used to ensure mass conservation. Efficiency in computing the interface dynamics is achieved by using a functional relation between the level set and volume-of-fluid functions. Difficulties and remedies in re-initialization of the level set function and inaccurate compution of surface tension are discussed. Test cases for validation are described, and demanding two-bubble computations to show the generality and the versatility of the method are presented. |
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