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R.W. Meyer, "A new method to determine the added mass of two-dimensional objects in potential flow", in B.H.V. Topping, P. Iványi, (Editors), "Proceedings of the Eleventh International Conference on Engineering Computational Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 2, Paper 2.9, 2022, doi:10.4203/ccc.2.2.9

Keywords: potential flow, drag, unsteady flow, added mass, random walk, displacement model, D’Alembert’s paradox, induced drag.

Abstract

The random walk source model is a displacement model where particles coming out of a source are displacing neighbor particles. The deformation of particle fronts moving towards objects carry the information about the fluid dynamical properties of the flow, as lift coefficient and drag coefficient. It is shown in numerical experiments, that the deformation of straight fronts pushing towards and passing an object also define an area behind the object where particles lack in comparison to an undeformed front. This aera (in the moment the separated fronts meet again), multiplicated with factor 2, is the added mass, assuming the particle represented by pixel, have a mass. This is a new way to determine the added mass in a random walk experiment.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 2 PROCEEDINGS OF THE ELEVENTH INTERNATIONAL CONFERENCE ON ENGINEERING COMPUTATIONAL TECHNOLOGY Edited by: B.H.V. Topping and P. Iványi Paper 2.9 A new method to determine the added mass of two-dimensional objects in potential flow R.W. Meyer Department of Mechanical and Marine Engineering, Western Norway University of Applied Science, Bergen, Norway doi:10.4203/ccc.2.2.9 Full Bibliographic Reference for this paper R.W. Meyer, "A new method to determine the added mass of two-dimensional objects in potential flow", in B.H.V. Topping, P. Iványi, (Editors), "Proceedings of the Eleventh International Conference on Engineering Computational Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 2, Paper 2.9, 2022, doi:10.4203/ccc.2.2.9 Keywords: potential flow, drag, unsteady flow, added mass, random walk, displacement model, D’Alembert’s paradox, induced drag. Abstract The random walk source model is a displacement model where particles coming out of a source are displacing neighbor particles. The deformation of particle fronts moving towards objects carry the information about the fluid dynamical properties of the flow, as lift coefficient and drag coefficient. It is shown in numerical experiments, that the deformation of straight fronts pushing towards and passing an object also define an area behind the object where particles lack in comparison to an undeformed front. This aera (in the moment the separated fronts meet again), multiplicated with factor 2, is the added mass, assuming the particle represented by pixel, have a mass. This is a new way to determine the added mass in a random walk experiment. download the full-text of this paper (PDF, 8 pages, 1098 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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