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**Harvard**

Karlsson, J. (2013) *Implementing Anisotropic Adaptive Mesh Refinement in OpenFOAM*. Göteborg : Chalmers University of Technology

** BibTeX **

@mastersthesis{

Karlsson2013,

author={Karlsson, Jonas},

title={Implementing Anisotropic Adaptive Mesh Refinement in OpenFOAM},

abstract={The field of computational fluid dynamics (CFD) is growing steadily, with a rate proportional to
the computational tools available. With today’s computing power available in CPU’s and clusters
we are able to solve cases that were considered impossible just a few years ago. Although as we
all know, even with great computational power and brute-force approaches, some problems will
remain unsolvable. With this realization, adaptive mesh refinement (AMR) was introduced as a
way of adapting the mesh as to reduce the computational error. AMR is relevant for CFD since it
can greatly reduce the computational effort needed to solve a lot of cases. This can in turn make
previously intractable simulations solvable. In this thesis we will look at how implementing a
specific type of AMR could be done - namely anisotropic AMR for the OpenFOAM code-base.
We will briefly look at some papers to get an idea of what constraints the mesh should satisfy
and to see what kind of data-structure for the refinement history is needed. We will also look
at similar functionality currently available in the OpenFOAM code. With this knowledge we
define a design criteria we will use for implementing anisotropic AMR in OpenFOAM.
This implementation will result in a working example of anisotropic AMR. We have also defined
a tree used for storing the refinement changes that can be used for other types of AMR
in the OpenFOAM codebase. We also show some graphical results of a case refined using the
anisotropic AMR defined in this thesis and compare these to an isotropic refinement.},

publisher={Institutionen för data- och informationsteknik (Chalmers), Chalmers tekniska högskola},

place={Göteborg},

year={2013},

note={58},

}

** RefWorks **

RT Generic

SR Electronic

ID 174173

A1 Karlsson, Jonas

T1 Implementing Anisotropic Adaptive Mesh Refinement in OpenFOAM

YR 2013

AB The field of computational fluid dynamics (CFD) is growing steadily, with a rate proportional to
the computational tools available. With today’s computing power available in CPU’s and clusters
we are able to solve cases that were considered impossible just a few years ago. Although as we
all know, even with great computational power and brute-force approaches, some problems will
remain unsolvable. With this realization, adaptive mesh refinement (AMR) was introduced as a
way of adapting the mesh as to reduce the computational error. AMR is relevant for CFD since it
can greatly reduce the computational effort needed to solve a lot of cases. This can in turn make
previously intractable simulations solvable. In this thesis we will look at how implementing a
specific type of AMR could be done - namely anisotropic AMR for the OpenFOAM code-base.
We will briefly look at some papers to get an idea of what constraints the mesh should satisfy
and to see what kind of data-structure for the refinement history is needed. We will also look
at similar functionality currently available in the OpenFOAM code. With this knowledge we
define a design criteria we will use for implementing anisotropic AMR in OpenFOAM.
This implementation will result in a working example of anisotropic AMR. We have also defined
a tree used for storing the refinement changes that can be used for other types of AMR
in the OpenFOAM codebase. We also show some graphical results of a case refined using the
anisotropic AMR defined in this thesis and compare these to an isotropic refinement.

PB Institutionen för data- och informationsteknik (Chalmers), Chalmers tekniska högskola,

LA eng

LK http://publications.lib.chalmers.se/records/fulltext/174173/174173.pdf

OL 30