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Keywords: separation
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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
Paper No: GT2021-59515
... interaction method. A potential core, based on streamline curvature and implicit velocity profile by parametric spline reconstruction, is coupled to an integral method predicting the turbulent boundary layer growth up to separation. The shear stress distribution is generated by a modified mixing length model...
Proceedings Papers

Proc. ASME. GT2020, Volume 2E: Turbomachinery, V02ET39A011, September 21–25, 2020
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. GT2020, Volume 2A: Turbomachinery, V02AT32A002, September 21–25, 2020
Paper No: GT2020-14192
...Abstract 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...
Proceedings Papers

Proc. ASME. GT2011, Volume 7: Turbomachinery, Parts A, B, and C, 239-250, June 6–10, 2011
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
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 4: Heat Transfer, Parts A and B, 555-567, June 14–18, 2010
Paper No: GT2010-23510
... the heater glass in order to provide transparent models. Turbine Blade Cooling Two-Pass System Ribs Bend U-Turn Flow Turning Dean Vortex Separation Rotation Flow Measurement Particle Image Velocimetry PIV 1 Copyright © 2010 by ASME Proceedings of ASME TURBO EXPO 2010 June 14-18, 2010...
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
Paper No: GT2010-22162
... 1 Copyright © 2010 by ASME Proceedings of ASME Turbo Expo 2010: Power for Land, Sea and Air GT2010 June 14-18, 2010, Glasgow, UK GT2010-22162 STUDY OF A TWO-PHASE FLOW PUMP AND SEPARATOR SYSTEM François Gruselle Université Libre de Bruxelles Aero-Thermo-Mechanics Department and Fonds pour la...
Proceedings Papers

Proc. ASME. GT2010, Volume 7: Turbomachinery, Parts A, B, and C, 1145-1154, June 14–18, 2010
Paper No: GT2010-22328
... is to prevent the flow 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...
Proceedings Papers

Proc. ASME. GT2010, Volume 7: Turbomachinery, Parts A, B, and C, 1155-1162, June 14–18, 2010
Paper No: GT2010-22330
... 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 with Gurney-flap. It was shown that with appropriate Gurney-flap the turbine...
Proceedings Papers

Proc. ASME. GT2009, Volume 3: Heat Transfer, Parts A and B, 747-756, June 8–12, 2009
Paper No: GT2009-59833
... 23 02 2010 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) was adopted to analyze the separated-transition flows for the PakB cascade...
Proceedings Papers

Proc. ASME. GT2008, Volume 6: Turbomachinery, Parts A, B, and C, 1069-1078, June 9–13, 2008
Paper No: GT2008-50330
... 04 08 2009 The application of steady flow injection to control flow separation on the suction side of an ultra high lift low pressure turbine airfoil is presented. The blade lift coefficient of the ultra high lift airfoil at 1.46 Zweifel coefficient is considerably higher than those...
Proceedings Papers

Proc. ASME. GT2008, Volume 4: Heat Transfer, Parts A and B, 1039-1050, June 9–13, 2008
Paper No: GT2008-51183
... present within duct turns, near ribs and, above all, during rotation. The presented investigations were conducted in stationary and rotating mode. Especially in the bend region separation phenomena and vortices with high local turbulence are apparent. The presence of ribs changes the fluid motion...
Proceedings Papers

Proc. ASME. GT2002, Volume 5: Turbo Expo 2002, Parts A and B, 273-285, June 3–6, 2002
Paper No: GT2002-30354
... simulate the incoming wakes from 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...
Proceedings Papers

Proc. ASME. GT2004, Volume 3: Turbo Expo 2004, 533-545, June 14–17, 2004
Paper No: GT2004-53566
... flow 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...