Theoretical study of turbine stage characteristics in off-design conditions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F18%3A43954262" target="_blank" >RIV/49777513:23210/18:43954262 - isvavai.cz</a>
Result on the web
<a href="https://aip.scitation.org/doi/pdf/10.1063/1.5081641?class=pdf" target="_blank" >https://aip.scitation.org/doi/pdf/10.1063/1.5081641?class=pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.5081641" target="_blank" >10.1063/1.5081641</a>
Alternative languages
Result language
angličtina
Original language name
Theoretical study of turbine stage characteristics in off-design conditions
Original language description
The article deals with the theoretical analysis of the basic axial turbine stage characteristics. In the introduction, the analytical derivation of the stage efficiency is analysed, and the influence of the change of reaction, the velocity ratio u/cf and the absolute velocity exit angle from the stator blades are monitored. The next part consists of a 1D calculation in the middle blade radius with VT-400 (air turbine) input parameters, which is part of the experimental research at the Department of Power System Engineering. The calculation was carried out for 3 blading variants (low, medium and full reaction). Modes outside the turbine optimum operating point were induced by changing the velocity ratio u/cf, especially by changing the absolute isentropic velocity cf at constant circumferential velocity u. This action results in a change of the relative velocity vector flowing at the rotor blade. This leads to a redistribution of velocity triangles and causes additional losses (incidence losses).
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20302 - Applied mechanics
Result continuities
Project
<a href="/en/project/LQ1603" target="_blank" >LQ1603: Research for SUSEN</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
AIP Conference Proceedings
ISBN
978-0-7354-1773-1
ISSN
0094-243X
e-ISSN
1551-7616
Number of pages
9
Pages from-to
020008-1 - 020008-9
Publisher name
AIP Conference Proceedings
Place of publication
MELVILLE, NY 11747-4501 US
Event location
Plzeň, Česká republika
Event date
Jun 13, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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