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Keywords: swirling flow
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Journal Articles
Article Type: Research Papers
J. Turbomach. July 2022, 144(7): 071006.
Paper No: TURBO-21-1092
Published Online: February 25, 2022
... been investigated. The tangential jets can induce large-scale swirling flows and significantly enhance the connective heat transfer. The swirl multi-pass channel can be considered as an effective internal cooling strategy for the gas turbine blades. Transient liquid crystal thermography is used...
Journal Articles
Article Type: Research-Article
J. Turbomach. May 2014, 136(5): 051001.
Paper No: TURBO-12-1252
Published Online: September 27, 2013
... in staggered positions. These two impingement jets generated a swirling flow inside the plenum, which entered the film-cooling hole and maintained its angular momentum until exiting the film-cooling hole. The slant angle of the impingement jets was changed to α = 0 deg, 10 deg, 20 deg, and 30 deg in the wind...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2012, 134(4): 041018.
Published Online: July 25, 2011
... No. GT2008-50788. Vassiliev , V. , Mooslechner , N. , Kostege , M. , and Granovskiy , A. , 2007 , “ Aerodynamic Characteristics of a Redesigned Turbine ,” ASME Paper No. GT2007-27472. channel flow computational fluid dynamics exhaust systems gas turbines Mach number swirling...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2012, 134(4): 041008.
Published Online: July 20, 2011
... engines gas turbines rotors swirling flow The early focus of engine/inlet compatibility investigations by industry and government agencies was on large gas turbine engines mounted on wings or fuselages that used straight pitot-style inlet systems. Thus, in the past, a greater emphasis...
Journal Articles
Article Type: Research Papers
J. Turbomach. May 2012, 134(3): 031013.
Published Online: July 15, 2011
... asymptote is quantified, and it is suggested how the orifice model could be used to extrapolate the effectiveness data obtained from an experimental rig to engine-operating conditions. 14 07 2010 22 07 2010 15 07 2011 15 07 2011 engines orifices (mechanical) swirling flow...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2011, 133(3): 031005.
Published Online: November 12, 2010
... ingress are significant, these cases are referred to as combined ingress. In Part I of this two-part paper, the so-called orifice equations are derived for compressible and incompressible swirling flows, and the incompressible equations are solved analytically for the RI ingress. The resulting algebraic...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2011, 133(3): 031006.
Published Online: November 12, 2010
...J. Michael Owen Ingress of hot gas through the rim seals of gas turbines can be modeled theoretically using the so-called orifice equations. In Part I of this two-part paper, the orifice equations were derived for compressible and incompressible swirling flows, and the incompressible equations were...
Journal Articles
Article Type: Research Papers
J. Turbomach. April 2011, 133(2): 021008.
Published Online: October 21, 2010
... 2010 21 10 2010 aerodynamics aerospace engines cavitation computational fluid dynamics cooling jets stators swirling flow turbines The ingestion of hot gas in the stator-rotor gas turbine cavities has to be avoided in order to prevent or limit the overheating of turbine...
Journal Articles
Article Type: Research Papers
J. Turbomach. January 2011, 133(1): 011028.
Published Online: September 28, 2010
... number range between 50,000 and 500,000 with a characteristic swirl number of 0.7. It is observed that the flow field in the combustor is characterized by an expanding swirling flow, which impinges on the liner wall close to the inlet of the combustor. The impinging shear layer is responsible...
Journal Articles
Article Type: Research Papers
J. Turbomach. October 2007, 129(4): 694–704.
Published Online: August 19, 2006
.... 26 07 2006 19 08 2006 aerodynamics blades design engineering gas turbines jet engines swirling flow aerospace components Mach number flow separation LP turbines in the modern civil aeroengine consist of several stages. Therefore, besides the efficiency, weight, cost...
Journal Articles
Article Type: Technical Papers
J. Turbomach. January 2007, 129(1): 53–61.
Published Online: January 11, 2006
... stator configurations. Full performance data are presented for the six different turbine configurations tested and a one-dimensional turbine performance model is evaluated as a means of predicting and extrapolating turbine performance. turbines blades stators rotors swirling flow A radial...
Journal Articles
Article Type: Technical Papers
J. Turbomach. January 2004, 126(1): 1–12.
Published Online: March 26, 2004
...Z. S. Spakovszky Rotating stall waves that travel against the direction of rotor rotation are reported for the first time and a new, low-order analytical approach to model centrifugal compressor stability is introduced. The model is capable of dealing with unsteady radially swirling flows...
Journal Articles
Article Type: Technical Papers
J. Turbomach. July 2005, 127(3): 564–572.
Published Online: March 1, 2004
..., static pressure and temperature assume a specific form for a perfect gas. A robust method for solving the system of equations that define the state of complete equilibrium (or mixed-out state) is presented using an efficient algorithm. The procedure is applied to the swirling flow exiting an isolated...
Journal Articles
Article Type: Technical Papers
J. Turbomach. January 2007, 129(1): 175–183.
Published Online: March 1, 2004
... operation and the use of engine parts in place of two-dimensional counterparts. By employing an annular sector of deswirl vanes downstream of the annular sector of test vanes, the radial pressure gradient established in the swirling flow downstream of the test vanes is not disturbed. The deswirl vane exit...
Journal Articles
Article Type: Technical Papers
J. Turbomach. October 2003, 125(4): 641–647.
Published Online: December 1, 2003
... between the outlet from the pre-swirl nozzles and the rotating core of fluid in the wheel-space. This loss increased as the pre-swirl flow-rate and inlet swirl ratio increased, and as the number of nozzles decreased. C D increased as the swirl ratio at the receiver hole radius approached unity; also C D...
Journal Articles
Article Type: Technical Papers
J. Turbomach. July 2003, 125(3): 505–512.
Published Online: August 27, 2003
... in the disk cavity indicate the strength of the swirling flow in the cavity, and show the effects of mainstream gas ingestion at low sealing flows. Ingestion is further quantified through seeding of the sealing air with nitrous oxide or carbon dioxide and measurement of gas concentrations in the cavity...
Journal Articles
Article Type: Technical Papers
J. Turbomach. April 2003, 125(2): 380–386.
Published Online: April 23, 2003
... 23 January 2002 23 04 2003 cooling pipe flow computational fluid dynamics gas turbines vortices swirling flow heat transfer CFD Modeling Offtake Passages Optimization It is a common requirement in secondary air systems to bleed air from part way through...
Journal Articles
Article Type: Technical Papers
J. Turbomach. January 2003, 125(1): 48–56.
Published Online: January 23, 2003
... effects can be especially severe for low-aspect ratio, high-pressure turbines, and highly loaded, low-pressure turbines. gas turbines flow control aerodynamics losses heat transfer Navier-Stokes equations flow simulation nozzles swirling flow 03 June 2002 03 January 2002...
Journal Articles
Article Type: Technical Papers
J. Turbomach. April 2002, 124(2): 235–241.
Published Online: April 9, 2002
... No. 10 of AGARD CP-301. Ludwig, G., 1989, “Tomahawk Engine/Inlet Compatibility Study for F107-WR-400/402 Engines,” Williams International Report CMEP 5003-2025. gas turbines aircraft testing simulation rotors swirling flow...
Journal Articles
Article Type: Technical Papers
J. Turbomach. April 2001, 123(2): 353–358.
Published Online: February 1, 2000
... vanes are the main reason for this finding. 08 May 2000 01 February 2000 gas turbines brakes space vehicles aerodynamics pumps rotational flow swirling flow Fluid induced rotordynamic forces play an important role in modern turbomachinery design. The continued push...