dc.contributor.author |
Polihronov, J.G.
|
|
dc.contributor.author |
Straatman, A.G.
|
|
dc.contributor.author |
DeGroot, C.T.
|
|
dc.date.accessioned |
2015-04-24T06:33:17Z |
|
dc.date.available |
2015-04-24T06:33:17Z |
|
dc.date.issued |
2014 |
|
dc.description.abstract |
Paper presented to the 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Florida, 14-16 July 2014. |
en_ZA |
dc.description.abstract |
In a recently published article by Polihronov and
Straatman (Phys. Rev. Letters 109, 054504, 2012), the
thermodynamics of angular propulsion was presented and
a theoretical model of the energy transfer was proposed.
This article will show that the theoretical model leads to
the most basic element of a radial inflow device. It is
shown that Euler's work equation reduces to the same
theoretical result for this case. The system is then studied
as a self-governed device moving in a medium posing
external resistance. It is observed that the output power
from the device exhibits a peak at a certain characteristic
value of its peripheral velocity. In the presence of
resistance or loading, the system has motion, characterized
by the requirement of pre-rotation exhibiting maximum
power output and a terminal state. The points of
equilibrium and operational thresholds of the motion are
discussed, accompanied by a theoretical model of the
presented dynamical system. The presented angular
propulsion theory is then utilized to provide better
understanding of phenomena taking place in vortex tubes. |
en_ZA |
dc.description.librarian |
dc2015 |
en_ZA |
dc.format.extent |
7 pages |
en_ZA |
dc.format.medium |
PDF |
en_ZA |
dc.identifier.citation |
Polihronov, JG, Straatman, AG & DeGroot, CT 2014, 'On the thermodynamics of angular propulsion', Paper presented to the 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Florida, 14-16 July 2014. |
en_ZA |
dc.identifier.isbn |
97817759206873 |
|
dc.identifier.uri |
http://hdl.handle.net/2263/44693 |
|
dc.publisher |
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics |
en_ZA |
dc.rights |
© 2014 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
en_ZA |
dc.subject |
Phys. Rev. Letters 109, 054504, 2012 |
en_ZA |
dc.subject |
Angular propulsion |
en_ZA |
dc.subject |
Radial inflow device |
en_ZA |
dc.subject |
Vortex tubes |
en_ZA |
dc.title |
On the thermodynamics of angular propulsion |
en_ZA |
dc.type |
Presentation |
en_ZA |