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Keywords: compressible flow
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Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. September 2023, 145(9): 091010.
Paper No: TURBO-22-1346
Published Online: June 26, 2023
...-universite.fr Email: camille.matar@etu.sorbonne-universite.fr Email: xavier.gloerfelt@ensam.eu 24 11 2022 31 05 2023 31 05 2023 26 06 2023 hot-wire anemometry calibration compressible flow real gas effects organic Rankine cycle (ORC) computational fluid dynamics (CFD...
Journal Articles
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. March 2012, 134(2): 021023.
Published Online: July 7, 2011
... hybridization makes further sense for compressible flow solvers, where, as the Mach number tends to zero at walls, excessive dissipation can occur. The hybrid strategy is used to predict flow over a rib roughened surface and a jet impinging on a convex surface. These cases are important for blade cooling...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2011, 133(4): 041029.
Published Online: April 27, 2011
... to allow representation of the end-wall boundary layers. The computations are based on a 3D, time-accurate, viscous, finite-volume compressible flow solver ( 12 ). The unsteady flow cases are computed as Reynolds-averaged Navier-Stokes (RANS), with the basic assumption that the frequencies of interest...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2011, 133(4): 041013.
Published Online: April 21, 2011
... 10 2010 21 04 2011 21 04 2011 compressible flow compressors confined flow Navier-Stokes equations rotating stall surge fan speed stall hysteresis stall inception stall recovery Recipient of the IGTI Technical Committee Best Paper Award for 2010. Rotating...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2011, 133(4): 041010.
Published Online: April 20, 2011
... in that they (a) preserve the order of the space-discretization and (b) greatly reduce the error in estimating integral output. A coarse-grid CFD analysis of the compressible flow field in an annular duct for which an analytical solution is available yields a mass flow error of 62% or 2%, depending on whether the best...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2011, 133(3): 031014.
Published Online: November 16, 2010
... of research in aerodynamic shape design optimization. The goal of this work is to extend the adjoint method into turbomachinery design applications for viscous and compressible flow, and to further improve the aerodynamic performance. In the work, the minimization of the entropy generation rate with the mass...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2011, 133(3): 031005.
Published Online: November 12, 2010
... compressible flow confined flow gas turbines orifices (mechanical) swirling flow Even when the external flow is axisymmetric, so that there is no circumferential variation in external pressure, ingress can still occur. The reason for this is that the rotating fluid in the wheel-space creates...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2011, 133(3): 031006.
Published Online: November 12, 2010
.... A. , and Johnson , B. V. , 1987 , “ Disk Pumping Test, Final Report ,” Air Force Wright Aeronautical Laboratories Report No. AFWAL-TR-87- 2050. 23 07 2009 10 08 2009 12 11 2010 12 11 2010 compressible flow gas turbines orifices (mechanical) seals (stoppers) swirling flow...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2009, 131(4): 041017.
Published Online: July 9, 2009
... to predict the rotational heat transfer in the equilateral triangular channel. 29 08 2008 21 09 2008 09 07 2009 blades channel flow compressed air systems compressible flow cooling gas turbines Modern gas turbine blades operate at high temperatures to improve efficiency...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2008, 130(3): 031017.
Published Online: May 6, 2008
... into the low pressure compression domain but also the expected hysteresis pattern of the surge loop in terms of its mass flow versus pressure characteristic. 20 02 2007 22 02 2007 06 05 2008 compressible flow compressors elasticity flow instability flow visualisation machine testing...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. January 2005, 127(1): 107–117.
Published Online: February 9, 2005
... stability flow measurement compressible flow confined flow nozzles jets Experiments to determine the causes, precursors, and control mechanisms for stall and surge in a centrifugal compressor were conducted at the NASA Glenn Research Center over the past several years. The experimental work...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. October 2006, 128(4): 597–605.
Published Online: February 1, 2005
... theory is presented to analyze the effects of compressibility in micro-flows (characterized by low Reynolds numbers and high Mach numbers) through hydrostatic thrust bearings for application to micro-turbomachines. The analytical model, which combines a one-dimensional compressible flow model with finite...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. October 2006, 128(4): 606–615.
Published Online: February 1, 2005
... cross-sectional area A , a one-dimensional compressible flow with friction, heat addition, and area change is employed ( 9 10 ). Assuming the flow through the orifices to be isothermal, the fractional change in static temperature can be expressed as 24 d T T = ( γ − 1 ) M...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. October 2004, 126(4): 464–472.
Published Online: December 29, 2004
... vortices boundary layer turbulence computational fluid dynamics compressors Runge-Kutta methods compressible flow wakes rotors stators Blade-row interaction in turbomachinery is important because it generates unsteady forces on the blades and causes blade fatigue and interaction noise...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. July 2004, 126(3): 406–413.
Published Online: September 3, 2004
... turbine profile. Finally, this study is a part of a wider research conducted at the VKI, including the influence of freestream turbulence level and passing wakes in compressible flow conditions, as in Coton et al. 17 . Hatman and Wang 12 described the physical development and the main features...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. April 2004, 126(2): 268–276.
Published Online: June 15, 2004
... compressible flow Navier-Stokes equations computational complexity In recent years, turbomachinery industry has continued to take more and more advantage of the capabilities of computational fluid dynamic (CFD) techniques in everyday activities. The aerodynamic analysis of components by means...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. April 2004, 126(2): 323–331.
Published Online: June 15, 2004
... compressors confined flow computational fluid dynamics Mach number subsonic flow compressible flow gas turbines The blade sections of industrial axial flow compressors require a wider range from surge to choke than typical gas turbine compressors in order to meet the high-volume flow-range...