Buch, Englisch, Band 26, 142 Seiten, Format (B × H): 170 mm x 220 mm
Reihe: Schriftenreihe aus dem Institut für Strömungsmechanik
Buch, Englisch, Band 26, 142 Seiten, Format (B × H): 170 mm x 220 mm
Reihe: Schriftenreihe aus dem Institut für Strömungsmechanik
ISBN: 978-3-95908-166-5
Verlag: TUDpress
Regarding gas turbines and jet engines, the design and the optimization of modern highperformance
turbines and compressors towards reduced emission and augmented performance
requires a clear understanding of the engine's aerodynamics, especially, of the unsteady
secondary flow on the endwall. Direct numerical simulation (DNS) provides one of
only few possibilities to shed new light on the physics of this highly unsteady, transitional,
and three dimensional flow. The present thesis deals with DNS of the secondary
flow in a linear low pressure turbine T106A cascade at a low Reynolds number of 20000. The major
aim of the work is to improve the understanding of such flows, which is achieved by detailed
analyses of the secondary flow structures and their dynamics. Taking into account the
inuences originating from periodically passing wakes and the rotation of the system, four
different cases are simulated.
