- Tytuł:
- On the modelling of aerodynamic force coefficients for over-shroud seals of turbine stages
- Autorzy:
-
Włodarski, W.
Kosowski, K. - Powiązania:
- https://bibliotekanauki.pl/articles/259389.pdf
- Data publikacji:
- 2009
- Wydawca:
- Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
- Tematy:
-
rotor dynamics
self-excited vibrations
aerodynamic forces
blade seals
turbine shrouds - Opis:
- This paper presents experimental investigations which made it possible to determine dynamic coefficients of labyrinth over-shroud seal of a model air turbine. The coefficients associate pressure forces with turbine rotor displacement, velocity and acceleration respective to turbine casing (linear model) and play important role in analyzing turbine-set dynamics. The obtained results indicated that involving serious errors can be expected in the case of application of the simplification consisting in neglecting inertia coefficients, proposed in the literature. It was simultaneously demonstrated that seals can be also met of weak damping qualities, for which to neglect damping coeffcients is allowable.
- Źródło:
-
Polish Maritime Research; 2009, S 1; 71-74
1233-2585 - Pojawia się w:
- Polish Maritime Research
- Dostawca treści:
- Biblioteka Nauki
Artykuł