Turbulent wakes in turbulent streams
Turbulent wakes in turbulent streams
Direct numerical simulation and wind tunnel experiments have been used to study the effects
of free-stream turbulence on axisymmetric wakes. In both cases the wake was introduced to
various turbulent streams having various levels of turbulence intensity and length scales. It
was found that the presence of the free-stream turbulence changes the wake’s decay rate and
does not allow self-similarity to occur (unless maybe very far downstream and way beyond
the current measurements reached). Also, the free-stream turbulence was found to be causing
a significant transformation in the turbulence structure inside the wake, where the latter was
found to be gradually evolving towards the former. Last, the fact that the two approaches
were modelling two different problems led to some differences in their results emphasising the
importance of the flow structure around the wake generating body in shaping the far wake
region.
Rind, Elad
b06dbedd-70cd-4476-acc5-a8cbcb029804
January 2011
Rind, Elad
b06dbedd-70cd-4476-acc5-a8cbcb029804
Castro, Ian P.
66e6330d-d93a-439a-a69b-e061e660de61
Rind, Elad
(2011)
Turbulent wakes in turbulent streams.
University of Southampton, School of Engineering Sciences, Doctoral Thesis, 132pp.
Record type:
Thesis
(Doctoral)
Abstract
Direct numerical simulation and wind tunnel experiments have been used to study the effects
of free-stream turbulence on axisymmetric wakes. In both cases the wake was introduced to
various turbulent streams having various levels of turbulence intensity and length scales. It
was found that the presence of the free-stream turbulence changes the wake’s decay rate and
does not allow self-similarity to occur (unless maybe very far downstream and way beyond
the current measurements reached). Also, the free-stream turbulence was found to be causing
a significant transformation in the turbulence structure inside the wake, where the latter was
found to be gradually evolving towards the former. Last, the fact that the two approaches
were modelling two different problems led to some differences in their results emphasising the
importance of the flow structure around the wake generating body in shaping the far wake
region.
Text
Elad_Rind_PhD_Aeronautics_and_Flight_Mechanics_January_2011.pdf
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Published date: January 2011
Organisations:
University of Southampton, Aerodynamics & Flight Mechanics
Identifiers
Local EPrints ID: 193955
URI: http://eprints.soton.ac.uk/id/eprint/193955
PURE UUID: 81521429-cfa5-4087-b818-3008fe6055dc
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Date deposited: 27 Jul 2011 13:58
Last modified: 14 Mar 2024 03:57
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Author:
Elad Rind
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