Computational investigations and grid refinement study of 3D transient flow in a cylindrical tank using OpenFOAM
The study of physic fluid for a liquid draining inside a tank is easily accessible using numerical simulation. However, numerical simulation is expensive when the liquid draining involves the multi-phase problem. Since an accurate numerical simulation can be obtained if a proper method for error est...
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| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
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Institute of Physics Publishing
2016
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| Subjects: | |
| Online Access: | http://eprints.utm.my/id/eprint/72975/ https://www.scopus.com/inward/record.uri?eid=2-s2.0-84998610923&doi=10.1088%2f1757-899X%2f152%2f1%2f012058&partnerID=40&md5=81d506fa050947ecbe6a71c830bd9ed3 |
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| Summary: | The study of physic fluid for a liquid draining inside a tank is easily accessible using numerical simulation. However, numerical simulation is expensive when the liquid draining involves the multi-phase problem. Since an accurate numerical simulation can be obtained if a proper method for error estimation is accomplished, this paper provides systematic assessment of error estimation due to grid convergence error using OpenFOAM. OpenFOAM is an open source CFD-toolbox and it is well-known among the researchers and institutions because of its free applications and ready to use. In this study, three types of grid resolution are used: coarse, medium and fine grids. Grid Convergence Index (GCI) is applied to estimate the error due to the grid sensitivity. A monotonic convergence condition is obtained in this study that shows the grid convergence error has been progressively reduced. The fine grid has the GCI value below 1%. The extrapolated value from Richardson Extrapolation is in the range of the GCI obtained. |
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