Developing a 3D incompressible vof based multiphase solver using OpenFOAM libraries

Holay, Sarang Abhay (2016) Developing a 3D incompressible vof based multiphase solver using OpenFOAM libraries. Masters thesis, Indian Institute of Technology Hyderabad.

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Abstract

In the recent past open source analysis software have been on the demand for studying various phenomenon related to uids and solids. To counter act the booming prices of commercial CFD and FEM toolkits, open source software pro- vide the key. In the eld of computational uid dynamics, open source cfd toolkit , OpenFOAM (Open source Field Operation And Manipulation) is a viable al- ternative to commercial cfd toolkits like FLUENT, StarCCM+, etc. In the following thesis, an attempt has been made to address standard droplet breakup problem using OpenFOAM. The thesis aims at developing an incom- pressible multiphase vof (volume of uid) based solver which works on a SMAC algorithm, using the native OpenFoam libraries. The native vof solver of OpenFOAM and the newly developed explicit solver are tested against standard benchmark cases like 3D lid driven cavity, vortex in a box, dual vortex stretching, spurious currents, square bubble to circle, cubical bubble to sphere, dual vortex stretching and droplet splashing and compared in terms of accuracy and computational time. This knowledge led to deciding upon optimum case setup parameters which was then used to address the problem at hand: droplet breakup. For the droplet breakup analysis, two droplets with di erent diameters ratios were allowed to collide for di erent Reynolds number and Weber numbers. The collisions were also studied for di erent o sets parameters. Apart from above standard cases, other important features of OpenFOAM such as di erent linear solvers, numerical schemes, multicore operational capabilities, dynamic mesh re nement and static mesh re nement were also tested and re- ported.

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IITH Creators:
IITH CreatorsORCiD
Item Type: Thesis (Masters)
Uncontrolled Keywords: Open FOAM, droplet dynamics, droplet collision, vof, multiphase, TD668
Subjects: ?? sub4.9 ??
Divisions: Department of Mechanical & Aerospace Engineering
Depositing User: Team Library
Date Deposited: 22 Aug 2016 11:17
Last Modified: 22 Aug 2016 11:17
URI: http://raiith.iith.ac.in/id/eprint/2670
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