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**Harvard**

Hansson, L. (2012) *CFD investigation of cooling flow in a rocket nozzle. A concept for one dimensional modeling with subdomains.*. Göteborg : Chalmers University of Technology (Diploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden, nr: 2012:37).

** BibTeX **

@mastersthesis{

Hansson2012,

author={Hansson, Lili},

title={CFD investigation of cooling flow in a rocket nozzle. A concept for one dimensional modeling with subdomains.},

abstract={The main purpose of this work has been to study if it is possible to reduce the mesh resolution but still capture
the general flow behavior and heat transfer in a rocket nozzle cooling channels by using a specific type of
domain in computational fluid dynamics (CFD). The domain used in this work is a subdomain in the software
Ansys CFX by the company Ansys. Ansys CFX is a software used to calculate fluid flow with the Navier-Stokes
equations, so called CFD.
The geometry that the investigations was conducted on were a square tube with a length of 4.2 [m] connected
with a inlet manifold and a outlet manifold and 4 other tubes. In order to verify the results a simulation were
preformed in the beginning of the thesis that were compared with Volvo Aero’s in-house code. The validation
showed that, with the turbulence model SST k − ! and a friction loss coefficient, the temperature, pressure
and velocity where matched with the simulation of the in-house code.
After verifying the boundary conditions and mesh, the second part of the thesis were to investigate how
well CFX handles the interface between a very coarse mesh and a very fine mesh. These results showed that
the interface affects the result but the disturbances are sufficiently low for the purpose of the task.
Finally the geometry with inlet manifold and outlet manifold and five tubes were simulated and evaluated
in order to get a estimate of the time that it takes for the solution to converge. Comparing this simulation
time with the time it takes for a fully resolved tube, the results showed a great improvement.},

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

place={Göteborg},

year={2012},

series={Diploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden, no: 2012:37},

keywords={CFD, rocket nozzle, nozzle, aerospace, turbulence, turbulence models, SST k-omega, real gas simulation, cooling, subdomain, friction loss coefficient},

}

** RefWorks **

RT Generic

SR Electronic

ID 165295

A1 Hansson, Lili

T1 CFD investigation of cooling flow in a rocket nozzle. A concept for one dimensional modeling with subdomains.

YR 2012

AB The main purpose of this work has been to study if it is possible to reduce the mesh resolution but still capture
the general flow behavior and heat transfer in a rocket nozzle cooling channels by using a specific type of
domain in computational fluid dynamics (CFD). The domain used in this work is a subdomain in the software
Ansys CFX by the company Ansys. Ansys CFX is a software used to calculate fluid flow with the Navier-Stokes
equations, so called CFD.
The geometry that the investigations was conducted on were a square tube with a length of 4.2 [m] connected
with a inlet manifold and a outlet manifold and 4 other tubes. In order to verify the results a simulation were
preformed in the beginning of the thesis that were compared with Volvo Aero’s in-house code. The validation
showed that, with the turbulence model SST k − ! and a friction loss coefficient, the temperature, pressure
and velocity where matched with the simulation of the in-house code.
After verifying the boundary conditions and mesh, the second part of the thesis were to investigate how
well CFX handles the interface between a very coarse mesh and a very fine mesh. These results showed that
the interface affects the result but the disturbances are sufficiently low for the purpose of the task.
Finally the geometry with inlet manifold and outlet manifold and five tubes were simulated and evaluated
in order to get a estimate of the time that it takes for the solution to converge. Comparing this simulation
time with the time it takes for a fully resolved tube, the results showed a great improvement.

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

T3 Diploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden, no: 2012:37

LA eng

LK http://publications.lib.chalmers.se/records/fulltext/165295.pdf

OL 30