THE EXPERIMENTAL STUDY OF DIFFUSER GEOMETRY FOR LOW PRESSURE

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49193864%3A_____%2F18%3AN0000007" target="_blank" >RIV/49193864:_____/18:N0000007 - isvavai.cz</a>
Result on the web
<a href="https://acc-ern.tul.cz/images/journal/sbornik/ACC_JOURNAL_2019_A.pdf#page=17" target="_blank" >https://acc-ern.tul.cz/images/journal/sbornik/ACC_JOURNAL_2019_A.pdf#page=17</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.15240/tul/004/2019-1-002" target="_blank" >10.15240/tul/004/2019-1-002</a>

Result language
angličtina
Original language name
THE EXPERIMENTAL STUDY OF DIFFUSER GEOMETRY FOR LOW PRESSURE
Original language description
The performance of the last stage of the LP part of a steam turbine is strongly influenced by the effectivity of the downstream exhaust casing. The 90° turning of the flow in a relatively short axial distance is a major cause of losses and the design of low-loss diffuser still remains a challenge for mechanical engineers. In this paper, results of studies on a several steam turbine exhaust diffuser designs of SKODA have been reported. Several experimental measurements were carried out in the special sector model air test rig. This unique test rig allows visual observation of the flow by the Schlieren method and evaluating the loss coefficient of static pressure in the diffuser. The test rig allows achieving very high (supersonic) speeds. The range of observed velocities was from 30 to 360 m/s. The experimental data from these measurements are very useful to be able to predict the exhaust casing losses during the real operation of steam turbine in non-designed states. The behaviour of individual diffuser designs has been discussed.
Czech name
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Czech description
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Project
<a href="/en/project/TJ01000048" target="_blank" >TJ01000048: Decreasing of Exhaust Loss in Modern Design Steam Turbines</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
C - Předmět řešení projektu podléhá obchodnímu tajemství (§ 504 Občanského zákoníku), ale název projektu, cíle projektu a u ukončeného nebo zastaveného projektu zhodnocení výsledku řešení projektu (údaje P03, P04, P15, P19, P29, PN8) dodané do CEP, jsou upraveny tak, aby byly zveřejnitelné.

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