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Keywords: discharge coefficient
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Proceedings Papers

Proc. ASME. GT2021, Volume 5B: Heat Transfer — General Interest; Internal Air Systems; Internal Cooling, V05BT14A016, June 7–11, 2021
Paper No: GT2021-60189
... nozzles have a radial angle. Six radial angles are selected to study the flow dynamics of a direct-transfer pre-swirl system in terms of the total pressure loss coefficient of the pre-swirl cavity, the discharge coefficient of the receiver holes, and the adiabatic effectiveness. It is shown...
Proceedings Papers

Proc. ASME. GT2020, Volume 4A: Combustion, Fuels, and Emissions, V04AT04A029, September 21–25, 2020
Paper No: GT2020-14567
...Abstract Abstract At present, researches on the discharge coefficient of the combustion chamber cooling holes are mostly based on the experimental study of the porous plates considering various geometric structures under different flow conditions. In this method, the average discharge...
Proceedings Papers

Proc. ASME. GT2020, Volume 7C: Heat Transfer, V07CT14A020, September 21–25, 2020
Paper No: GT2020-15296
...Abstract Abstract Orifices, especially rotating orifices, are an important flow element of the secondary air system in a modern aero-engine, and their discharge coefficient depends on the geometry, the operating point and the surrounding environment. The influence of Reynolds number, pressure...
Proceedings Papers

Proc. ASME. GT2019, Volume 5A: Heat Transfer, V05AT11A011, June 17–21, 2019
Paper No: GT2019-91084
... between improved heat transfer and reduced flow resistance. impingement cooling heat transfer rib discharge coefficient NUMERICAL STUDY ON THE FLOW AND HEAT TRANSFER CHARACTERISTICS WITH DIFFERENT RIB STRUCTURES PLACED ON THE IMPINGEMENT PLATE Yong-feng Ding Hui-ren Zhu Qiang Gao School...
Proceedings Papers

Proc. ASME. GT2012, Volume 4: Heat Transfer, Parts A and B, 1899-1912, June 11–15, 2012
Paper No: GT2012-68209
... Neubiberg, Germany Email: jan.sousek@unibw.de ABSTRACT Rotating and stationary orifices are used within the secondary air sys- tem to transport sealing/ cooling air to its consumers. This paper reports on measurements of the discharge coefficient of rotating radial holes as their aerodynamical behaviour...
Proceedings Papers

Proc. ASME. GT2010, Volume 4: Heat Transfer, Parts A and B, 1051-1060, June 14–18, 2010
Paper No: GT2010-22691
... In modern multi shaft gas turbine engines the cooling air taken from the compressor passes through various stationary or rotating holes or orifices to the turbine stage. The discharge coefficient of rotating orifices may vary considerably depending on the operating point and the geometry...
Proceedings Papers

Proc. ASME. GT2010, Volume 4: Heat Transfer, Parts A and B, 1897-1907, June 14–18, 2010
Paper No: GT2010-23732
... holes for low and mid-range blowing ratios, but not at higher levels. 11 01 2011 film cooling conical-shaped hole computational fluid dynamic Reynolds Averaged Navier Stokes cooling uniformity coefficient discharge coefficient 1 Copyright © 2010 by ASME Proceedings of the ASME...
Proceedings Papers

Proc. ASME. GT2008, Volume 4: Heat Transfer, Parts A and B, 1599-1612, June 9–13, 2008
Paper No: GT2008-50976
.... The influence of different geometric features is incorporated into a model for the calculation of discharge coefficients. Cross-flow discharge coefficient rotating orifice secondary air system SM NT C AL ü e A hu In an effort to provide usable further insight into flows Reax Axial Reynolds number...
Proceedings Papers

Proc. ASME. GT2004, Volume 4: Turbo Expo 2004, 307-320, June 14–17, 2004
Paper No: GT2004-53237
... of high speed machinery such as industrial compressors and high speed electrical machinery. The objective of the work was to enhance the understanding of the flows in such geometries and reliably establish discharge coefficients which can be used for air system design purposes. Publications in the area...
Proceedings Papers

Proc. ASME. GT2004, Volume 3: Turbo Expo 2004, 393-400, June 14–17, 2004
Paper No: GT2004-53376
... Experimental investigations on discharge coefficient (Cd) of a row of plunged dilution holes of a reverse-flow gas turbine combustor were carried out using water as the working fluid. Studies were carried in a wide range of inlet Re (0.5 × 10 4 – 1.65 × 10 4 ) on an individual row of dilution...
Proceedings Papers

Proc. ASME. GT2005, Volume 1: Turbo Expo 2005, 201-211, June 6–9, 2005
Paper No: GT2005-68904
... The aim of this study is to determine the discharge coefficient of a multiperforated wall sample designed by AVIO, and more precisely to show the influence of each surrounding flow (inside holes, coolant and main flows). Results obtained are compared to correlations from literature...