Details
| Originalsprache | Englisch |
|---|---|
| Titel des Sammelwerks | Proceedings of 13th European Conference on Turbomachinery Fluid dynamics & Thermodynamics |
| Seitenumfang | 13 |
| Publikationsstatus | Veröffentlicht - 2019 |
| Veranstaltung | 13th European Turbomachinery Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2019 - Lausanne, Schweiz Dauer: 8 Apr. 2019 → 12 Apr. 2019 |
Publikationsreihe
| Name | Proceedings of European Conference on Turbomachinery Fluid Dynamics & Thermodynamics |
|---|---|
| ISSN (elektronisch) | 2410-4833 |
Abstract
Measurements of the discharge coefficient of labyrinth seals reveal a strong sensitivity of the cavity flow to even small changes in geometrical parameters. It is shown that accurate measurements of the seal clearance are required to model the flow with a degree of certainty, which permits further conclusions. Based on accurate representations of the geometry in CFD models, it can be demonstrated that RANS flow solvers have substantial deficits in correctly predicting labyrinth seal flow. A novel test rig has been designed and put into operation for studying the labyrinth seal leakage flow in detail using temperature and pressure as well as optical flow velocity measurement methods. The rig uses a rotating disc with a labyrinth seal on its outer perimeter, and an annular flow channel to represent the shroud cavity. Homogeneity of the inlet and outlet boundary conditions is verified by means of circumferentially and radially distributed measurements of the total temperature and pressure. The rig mirrors the geometrical and aerodynamic parameters of the cavities in an axial turbine, which will subsequently be used for further investigations.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Physik der kondensierten Materie
- Ingenieurwesen (insg.)
- Werkstoffmechanik
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Proceedings of 13th European Conference on Turbomachinery Fluid dynamics & Thermodynamics. 2019. ETC2019-078 (Proceedings of European Conference on Turbomachinery Fluid Dynamics & Thermodynamics).
Publikation: Beitrag in Buch/Bericht/Sammelwerk/Konferenzband › Aufsatz in Konferenzband › Forschung › Peer-Review
}
TY - GEN
T1 - Sensitivity Analysis, Design, Instrumentation, and Experimental Validation of a Novel Labyrinth Seal Rig
AU - Kluge, T.
AU - Wein, L.
AU - Schmierer, R.
AU - Seume, J. R.
N1 - Copyright © by the Authors
PY - 2019
Y1 - 2019
N2 - Measurements of the discharge coefficient of labyrinth seals reveal a strong sensitivity of the cavity flow to even small changes in geometrical parameters. It is shown that accurate measurements of the seal clearance are required to model the flow with a degree of certainty, which permits further conclusions. Based on accurate representations of the geometry in CFD models, it can be demonstrated that RANS flow solvers have substantial deficits in correctly predicting labyrinth seal flow. A novel test rig has been designed and put into operation for studying the labyrinth seal leakage flow in detail using temperature and pressure as well as optical flow velocity measurement methods. The rig uses a rotating disc with a labyrinth seal on its outer perimeter, and an annular flow channel to represent the shroud cavity. Homogeneity of the inlet and outlet boundary conditions is verified by means of circumferentially and radially distributed measurements of the total temperature and pressure. The rig mirrors the geometrical and aerodynamic parameters of the cavities in an axial turbine, which will subsequently be used for further investigations.
AB - Measurements of the discharge coefficient of labyrinth seals reveal a strong sensitivity of the cavity flow to even small changes in geometrical parameters. It is shown that accurate measurements of the seal clearance are required to model the flow with a degree of certainty, which permits further conclusions. Based on accurate representations of the geometry in CFD models, it can be demonstrated that RANS flow solvers have substantial deficits in correctly predicting labyrinth seal flow. A novel test rig has been designed and put into operation for studying the labyrinth seal leakage flow in detail using temperature and pressure as well as optical flow velocity measurement methods. The rig uses a rotating disc with a labyrinth seal on its outer perimeter, and an annular flow channel to represent the shroud cavity. Homogeneity of the inlet and outlet boundary conditions is verified by means of circumferentially and radially distributed measurements of the total temperature and pressure. The rig mirrors the geometrical and aerodynamic parameters of the cavities in an axial turbine, which will subsequently be used for further investigations.
KW - Cavity flow
KW - Discharge coefficient
KW - Labyrinth seal
KW - Turbomachinery
KW - Turbulence models
UR - http://www.scopus.com/inward/record.url?scp=85065987070&partnerID=8YFLogxK
U2 - 10.29008/ETC2019-078
DO - 10.29008/ETC2019-078
M3 - Conference contribution
T3 - Proceedings of European Conference on Turbomachinery Fluid Dynamics & Thermodynamics
BT - Proceedings of 13th European Conference on Turbomachinery Fluid dynamics & Thermodynamics
T2 - 13th European Turbomachinery Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2019
Y2 - 8 April 2019 through 12 April 2019
ER -