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**Harvard**

Persson, S. (2017) *Development of a Test Suite for Verification & Validation of OpenFOAM*. Göteborg : Chalmers University of Technology (Diploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden, nr: 2017:59).

** BibTeX **

@mastersthesis{

Persson2017,

author={Persson, Simon},

title={Development of a Test Suite for Verification & Validation of OpenFOAM},

abstract={Computational fluid dynamics is an important tool which can be used to simulate
various properties of a flow. CFD simulations are used within the nuclear power
industry to aid in the evaluation of thermal loads within a given system. In order to
verify and validate some aspects of the open source solver OpenFOAM a test suite
was developed. The main goal was to build a series of automated tests while at the
same time enable future additions of new tests. The verification process focused
on the evaluation of certain numerical schemes used for both incompressible and
compressible solvers in OpenFOAM. In order to evaluate the results of each case
two different test criteria where used. The difference between simulated results and
exact solutions to a specific problem was used to calculate a discretization error for
the whole computational domain. The discretization error can then be used together
with a refinement of the mesh to calculate an observed order of accuracy. In order
to obtain exact analytic equations to the governing equations the method of manufactured
solution was implemented. A solution for the equations was manufactured
and a resulting source term was implemented in the simulation. The results from
the simulation should then correspond to the manufactured solution. It was found
that the results for the order of accuracy could be used as a test criteria when evaluating
numerical schemes and solvers. A validation test case was also implemented
into the test suite. The simulation was based upon an experiment previously used
as a benchmark for various CFD simulations. It was found that a coarse mesh with
a limited amount of cells could be used for evaluation of thermal mixing. In order
to determine if a test is accurate enough a validation metric evaluated from the difference
between the results from simulation and the experimental data. The metric
was defined from the discretization error also used in the verification cases. The
error was evaluated at the points where experimental data was available.},

publisher={Institutionen för tillämpad mekanik, Strömningslära, Chalmers tekniska högskola},

place={Göteborg},

year={2017},

series={Diploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden, no: 2017:59},

keywords={Verification, Validation, OpenFOAM, CFD, MMS, Manufactured Solution},

}

** RefWorks **

RT Generic

SR Electronic

ID 250253

A1 Persson, Simon

T1 Development of a Test Suite for Verification & Validation of OpenFOAM

YR 2017

AB Computational fluid dynamics is an important tool which can be used to simulate
various properties of a flow. CFD simulations are used within the nuclear power
industry to aid in the evaluation of thermal loads within a given system. In order to
verify and validate some aspects of the open source solver OpenFOAM a test suite
was developed. The main goal was to build a series of automated tests while at the
same time enable future additions of new tests. The verification process focused
on the evaluation of certain numerical schemes used for both incompressible and
compressible solvers in OpenFOAM. In order to evaluate the results of each case
two different test criteria where used. The difference between simulated results and
exact solutions to a specific problem was used to calculate a discretization error for
the whole computational domain. The discretization error can then be used together
with a refinement of the mesh to calculate an observed order of accuracy. In order
to obtain exact analytic equations to the governing equations the method of manufactured
solution was implemented. A solution for the equations was manufactured
and a resulting source term was implemented in the simulation. The results from
the simulation should then correspond to the manufactured solution. It was found
that the results for the order of accuracy could be used as a test criteria when evaluating
numerical schemes and solvers. A validation test case was also implemented
into the test suite. The simulation was based upon an experiment previously used
as a benchmark for various CFD simulations. It was found that a coarse mesh with
a limited amount of cells could be used for evaluation of thermal mixing. In order
to determine if a test is accurate enough a validation metric evaluated from the difference
between the results from simulation and the experimental data. The metric
was defined from the discretization error also used in the verification cases. The
error was evaluated at the points where experimental data was available.

PB Institutionen för tillämpad mekanik, Strömningslära, Chalmers tekniska högskola,

T3 Diploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden, no: 2017:59

LA eng

LK http://publications.lib.chalmers.se/records/fulltext/250253/250253.pdf

OL 30