1-15 of 15
Keywords: separation
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Proc. ASME. GT2023, Volume 13C: Turbomachinery — Deposition, Erosion, Fouling, and Icing; Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V13CT32A002, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-100670
... at Re=90,000 is analyzed using Delayed Detached Eddy Simulations (DDES). At this operating point, the low Reynolds number and the high loading of the blade result in a separation bubble and a separation-induced transition of the flow over the suction side. The utilized DDES method is based...
Proceedings Papers

Proc. ASME. GT2021, Volume 2C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V02CT34A026, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59515
..., is coupled Boundary layer thickness/Increment to an integral method predicting the turbulent boundary layer Displacement/Momentum thickness growth up to separation. The shear stress distribution is Relative error generated by a modified mixing length model for strongly curved Von Karman constant in universal...
Proceedings Papers

Proc. ASME. GT2020, Volume 2A: Turbomachinery, V02AT32A002, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14192
... Abstract A large-eddy simulation (LES) is employed here to predict the flow field over the suction surface of a controlled-diffusion (C-D) compressor stator blade following the experiment of Hobson et al. [1]. When compared with the experiment, LES depicts a separation bubble (SB) in the mid...
Proceedings Papers

Proc. ASME. GT2020, Volume 2E: Turbomachinery, V02ET39A011, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14472
.... The flow field analyses show that the injecting flows discharging from the blade surface slots can encourage the low energy flows near the blade suction surface in some blade passages. Hence, the boundary layer separations of the blade suction surface are restrained by the injecting flows, and the flow...
Proceedings Papers

Proc. ASME. GT2011, Volume 7: Turbomachinery, Parts A, B, and C, 239-250, June 6–10, 2011
Publisher: American Society of Mechanical Engineers
Paper No: GT2011-46044
... from 16 to 6. The higher loadings result in exacerbated corner separations. An increased reaction can relief the three dimensional separation and achieve the expectant stage pressure ratio. The ratio of the maximum thickness to the chord length of the rotor blade from hub to shroud is optimized...
Proceedings Papers

Proc. ASME. GT2011, Volume 4: Cycle Innovations; Fans and Blowers; Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Oil and Gas Applications, 1079-1088, June 6–10, 2011
Publisher: American Society of Mechanical Engineers
Paper No: GT2011-46917
... 1 Copyright © 2011 by ASME AN INNOVATIVE TWO-PHASE FLOW PUMP AND SEPARATOR SOLUTION François Gruselle Université Libre de Bruxelles Aero-Thermo-Mechanics Department and Fonds pour la formation à la Recherche dans l Industrie et dans l Agriculture (FRIA) Brussels, Belgium francois.gruselle...
Proceedings Papers

Proc. ASME. GT2010, Volume 7: Turbomachinery, Parts A, B, and C, 1145-1154, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-22328
... separation on blade suction surface and to keep the efficiency at high levels. Recent investigations on the blade-flap have demonstrated dramatic reduction in the separation losses of turbine. It would be very attractive to integrate the blade-flap in the design of enhanced loaded turbine. The critical...
Proceedings Papers

Proc. ASME. GT2010, Volume 7: Turbomachinery, Parts A, B, and C, 1155-1162, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-22330
... 11 01 2011 Numerical simulations were performed to investigate the effects of a passive flow control device named Gurney-flap on the laminar separation bubble and associated losses, aiming at assessing the feasibility of designing low solidity and highly-loaded LP turbine cascade...
Proceedings Papers

Proc. ASME. GT2010, Volume 5: Industrial and Cogeneration; Microturbines and Small Turbomachinery; Oil and Gas Applications; Wind Turbine Technology, 657-666, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-22162
... two-phase flow separation pumping experiments CFD simulations The Aero-Thermo-Mechanics (ATM) Department of ULB (Universite´ Libre de Bruxelles) is developing an original system to pump and separate a two-phase flow. Many applications need to extract a certain phase of a multiphase...
Proceedings Papers

Proc. ASME. GT2010, Volume 4: Heat Transfer, Parts A and B, 555-567, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-23510
... Turbine Blade Cooling Two-Pass System Ribs Bend U-Turn Flow Turning Dean Vortex Separation Rotation Flow Measurement Particle Image Velocimetry PIV The flow field characteristics of a two-pass cooling system with an engine-similar lay-out have been investigated experimentally...
Proceedings Papers

Proc. ASME. GT2009, Volume 3: Heat Transfer, Parts A and B, 747-756, June 8–12, 2009
Publisher: American Society of Mechanical Engineers
Paper No: GT2009-59833
... Low pressure turbine transition separation passive control Large-eddy simulation A rectangular bar which just likes a forward-backward facing step was designed to passive control of the Low-Pressure Turbine (LPT) PakB cascade suction surface separation. Large-eddy simulation (LES...
Proceedings Papers

Proc. ASME. GT2008, Volume 6: Turbomachinery, Parts A, B, and C, 1069-1078, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-50330
... the separation. This results in a panwise variation in lift and trailing edge shed vortical struc- ures. [Keywords: Separation, steady injection, LPT, Ultra high ift, Control] OMENCLATURE BR Blowing Ratio CTA Constant Temperature Anemometry d Diameter D Diffusion f Frequency F+ Adapted puls frequency HPC High...
Proceedings Papers

Proc. ASME. GT2008, Volume 4: Heat Transfer, Parts A and B, 1039-1050, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-51183
... Turbine Blade Cooling Two-Pass System Ribs Bend U-Turn Flow Turning Dean Vortex Separation Rotation Flow Measurement Particle Image Velocimetry PIV Laser Optic Visualization In a 2-pass cooling system the pressure driven air flow distribution is investigated experimentally...
Proceedings Papers

Proc. ASME. GT2002, Volume 5: Turbo Expo 2002, Parts A and B, 273-285, June 3–6, 2002
Publisher: American Society of Mechanical Engineers
Paper No: GT2002-30354
... the upstream blade row in the compressor. Results are presented for steady flow and for unsteady compressor-like conditions. In all cases, the separation bubble of the steady flow is suppressed by the turbulence that is induced in the boundary layer by the wakes at approximately 10% of the suction side. Its...
Proceedings Papers

Proc. ASME. GT2004, Volume 3: Turbo Expo 2004, 533-545, June 14–17, 2004
Publisher: American Society of Mechanical Engineers
Paper No: GT2004-53566
... visualization technique for obtaining wall streamlines and laser light sheet visualization technique to detect vortex structures and separations. The results presented in this paper clarify the complex flow situation given by the two-pass system with the inherent turn. Especially in the bend area separation...