...Shuang Sun; Tianrong Tan; Zhen Huang; Xiaopeng Sun; Lehan Lu; Maomao Wang This article investigates the boundary layer on the suction surface of a low-pressure turbine (LPT) subjected to upstream wakes with three different unsteady flow cases, characterized by the variation of flow coefficients...

...Lanyi Yan; Daniele Simoni; Yigang Luan; Tao Sun; Dario Barsi; Pietro Zunino The article presents a data processing methodology to identify the noise sources in low-pressure turbine (LPT) stages and their relative importance. Scale adaptive simulation (SAS) has been carried out on a geometry...

...John P. Clark; Guillermo Paniagua; Beni Cukurel Here, we describe a combined design, numerical, and experimental program intended substantially to increase the lift and work of low-pressure turbine stages. This exercise is critically dependent upon the appropriate modeling of boundary-layer...

...Giacomo Pastorino; Loris Simonassi; Gustavo Lopes; Elissavet Boufidi; Fabrizio Fontaneto; Sergio Lavagnoli In the present work, hot-wire anemometry was employed for the characterization of the turbulent field at the inlet of a high-speed low-pressure turbine cascade, in terms of turbulence...

...Zhihui Li; Loizos Christodoulou; Richard Jefferson-Loveday; Stephen Ambrose; Richard Jackson; Gary D. Lock; Carl M. Sangan; James A. Scobie The windage torque on rotational walls has a negative effect on the performance of the low-pressure turbine. In this paper, three novel flow control concepts...

...Hidekazu Kodama; Ken-ichi Funazaki The present paper aims to experimentally investigate the influence of wake-passing frequency, Reynolds number, and suction surface diffusion rate on the additional loss due to incoming wakes to the profile loss in the low-pressure turbine (LPT) cascades...

...Maxime Fiore; Nicolas Gourdain This article presents the large-eddy simulation (LES) of a low-pressure turbine (LPT) nozzle guide vane (NGV) for different Reynolds (Re) and Mach (Ma) numbers with or without inlet turbulence prescribed. The analysis is based on a slice of an LPT blading...

... is shown to have a noticeable upstream influence on the outlet flow from the low-pressure turbine and a noticeable downstream influence on the outlet flow from the TRS. References [1] Hjärne , J. , Larsson , J. , and Löfdahl , L. , 2006 , “ Performance and Off-Design Characteristics...

...P. Z. Sterzinger; S. Zerobin; F. Merli; L. Wiesinger; A. Peters; G. Maini; M. Dellacasagrande; F. Heitmeir; E. Göttlich This paper presents the experimental and numerical evaluation and comparison of the different flow fields downstream of a turbine center frame duct and a low-pressure turbine (LPT...

...P. Z. Sterzinger; S. Zerobin; F. Merli; L. Wiesinger; M. Dellacasagrande; A. Peters; G. Maini; F. Heitmeir; E. Göttlich This paper presents the unsteady flow interactions between an engine-representative high-pressure turbine (HPT) and low-pressure turbine (LPT) stage, connected by a turbine center...

...Sara Biagiotti; Juri Bellucci; Michele Marconcini; Andrea Arnone; Gino Baldi; Mirko Ignesti; Vittorio Michelassi; Libero Tapinassi In this work, the effects of turbine center frame (TCF) wakes on the aeromechanical behavior of the downstream low-pressure turbine (LPT) blades are numerically...