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Keywords: swirling flow
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Journal Articles
Publisher: ASME
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
Publisher: ASME
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
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2012, 134(4): 041018.
Published Online: July 25, 2011
... with measurements, confirming that CFD is fit for this purpose. channel flow computational fluid dynamics exhaust systems gas turbines Mach number swirling flow turbulence Diffusers are used in different technical applications for pressure recovery, i.e., for conversion of kinetic energy of fluid...
Journal Articles
Publisher: ASME
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
Publisher: ASME
Article Type: Research Papers
J. Turbomach. May 2012, 134(3): 031013.
Published Online: July 15, 2011
... Φ min from the effectiveness data for RI or EI ingress. engines orifices (mechanical) swirling flow turbines The orifice equations for swirling flow developed by Owen ( 1 2 ) were applied to the case of externally induced (EI) ingress in Part I ( 3 ) of this two-part paper...
Journal Articles
Publisher: ASME
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
Publisher: ASME
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
Publisher: ASME
Article Type: Research Papers
J. Turbomach. April 2011, 133(2): 021008.
Published Online: October 21, 2010
... the sector model, where both the flowpath and the stator well are included. 20 07 2009 27 07 2009 21 10 2010 21 10 2010 aerodynamics aerospace engines cavitation computational fluid dynamics cooling jets stators swirling flow turbines The ingestion of hot gas...
Journal Articles
Publisher: ASME
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
Publisher: ASME
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 In a second step, Sonoda et al. ( 14 ) showed an alternative OGV with a unique airfoil Mach number distribution, as shown...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. January 2007, 129(1): 53–61.
Published Online: January 11, 2006
... 2005 11 01 2006 turbines blades stators rotors swirling flow A radial flow turbine is employed in almost all turbocharging applications for its compactness, robustness, economic production, and relatively low specific speed. The radial turbine comprises two main elements...
Journal Articles
Publisher: ASME
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
Publisher: ASME
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
Publisher: ASME
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
Publisher: ASME
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
Publisher: ASME
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
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. April 2003, 125(2): 380–386.
Published Online: April 23, 2003
.... 03 June 2002 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...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. January 2003, 125(1): 48–56.
Published Online: January 23, 2003
..., 2002. Paper No. 2002-GT-30529. Review Chair: E. Benvenuti. gas turbines flow control aerodynamics losses heat transfer Navier-Stokes equations flow simulation nozzles swirling flow Secondary flows in airfoil passages such as horseshoe, passage, and corner vortices are generally...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. April 2002, 124(2): 235–241.
Published Online: April 9, 2002
..., Lousiana, June 4–7, 2001. Manuscript received by the IGTI, November 17, 2000. Paper No. 2001-GT-507. Review Chair: R. A. Natole. 04 06 2001 17 11 2000 09 04 2002 gas turbines aircraft testing simulation rotors swirling flow compressors propulsion...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. April 2001, 123(2): 281–287.
Published Online: February 1, 2000
... airfoil internal channels by eliminating the 180 deg turn and passing the coolant from one pass to the second pass through discrete rows of holes. The jets ricochet off the surfaces of the second pass channel and produce a swirling flow that is carried downstream by the crossflow generated by the spent...