Flutter running waves in turbine blades cascade

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F17%3A00483553" target="_blank" >RIV/61388998:_____/17:00483553 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Flutter running waves in turbine blades cascade
Original language description
The existence of flutter running waves has been often observed at experimental investigation of turbine blades cascade. The presented paper is an attempt to explain origin and behavior of running flutter waves in the rotating blade cascade excited by steam flow from the stationary bladed disk. One of the possibly reasons for existence of running waves are the running periodic forces from steam wakes due to different numbers of blades of stationary and rotating wheels. On a computational model of turbine disk with 10 blades there are shown properties – velocities, directions and modes – of these forced running waves. Interaction of this kind of forced excitation with aero-elastic self-excitation – flutter – causes origin of flutter running waves. These flutter waves will be analyzed in the paper for several kinds and combinations of aero-elastic self-excitations.
Czech name
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Czech description
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Project
<a href="/en/project/GA16-04546S" target="_blank" >GA16-04546S: Aero-elastic couplings and dynamic behaviour of rotational periodic bodies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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