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Keywords: geometry
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Journal Articles
Article Type: Research Papers
J. Turbomach. May 2012, 134(3): 031017.
Published Online: July 15, 2011
... in some respect. The more detailed 3D geometry did not significantly improve the comparison with experiment, which suggests deficiencies in the turbulence modeling, particularly in the complex mixing region near the preswirl nozzle jets. The predicted heat transfer near the receiver holes was also shown...
Journal Articles
Article Type: Research Papers
J. Turbomach. January 2012, 134(1): 011019.
Published Online: May 31, 2011
....2007.11.008 Bohn , D. , and Krewinkel , R. , 2009 , “ Conjugate Calculation of Effusion Cooling With Realistic Cooling Hole Geometries ,” ASME Paper No. GT2009-59082. Saumweber , C. , and Schulz , A. , 2008 , “ Effect of Geometry Variations on the Cooling Performance of Fan...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2011, 133(3): 031012.
Published Online: November 15, 2010
... of a largely separated LPT blade geometry with a high blade loading level. Comparisons were made with available experimental cascade results on the prediction of the inlet Reynolds number effect on surface static pressure distribution, suction surface boundary layer behavior, and the wake total pressure loss...
Journal Articles
Article Type: Research Papers
J. Turbomach. January 2011, 133(1): 011025.
Published Online: September 27, 2010
... it does not with the k - ε model, a larger shroud separation at the impeller exit seen with the SST and SST-RM models, and core flow differences are in the complex curved diffuser geometry. The results are discussed in terms of the production and dissipation of k predicted by the various models due...
Journal Articles
Article Type: Research Papers
J. Turbomach. January 2010, 132(1): 011011.
Published Online: September 17, 2009
...Edward M. J. Naylor; Cecilia Ortiz Dueñas; Robert J. Miller; Howard P. Hodson This paper presents a new design methodology for strutted S-shaped compressor ducts that allows for more aggressive designs while maintaining current levels of duct loss. A baseline duct geometry was selected, which had...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2009, 131(3): 031007.
Published Online: April 8, 2009
...Alok Sinha This paper deals with the development of an accurate reduced-order model of a bladed disk with geometric mistuning. The method is based on vibratory modes of various tuned systems and proper orthogonal decomposition of coordinate measurement machine data on blade geometries. Results...
Journal Articles
Article Type: Research Papers
J. Turbomach. October 2008, 130(4): 041002.
Published Online: June 17, 2008
...Budimir Rosic; John D. Denton; Eric M. Curtis; Ashley T. Peterson The geometry of the exit shroud cavity where the rotor shroud leakage flow reenters the main passage flow is very important due to the dominant influence of the leakage flow on the aerodynamics of low aspect ratio turbines. The work...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2008, 130(3): 031016.
Published Online: May 5, 2008
...L. Porreca; A. I. Kalfas; R. S. Abhari This paper presents a comprehensive study of the effect of shroud design in axial turbine aerodynamics. Experimental measurements and numerical simulations have been conducted on three different test cases with identical blade geometry and tip clearances...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2008, 130(3): 031006.
Published Online: May 2, 2008
... coefficient. The diffusion parameter is based on preliminary design flow variables and geometry. Computational simulations and single and multistage compressor data are used to show the applicability of the criterion over a range of blade design parameters. The criterion also enables determination of specific...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2008, 130(3): 031005.
Published Online: May 2, 2008
... representative nondimensionals in terms of geometry and operating conditions. The main flow is heated and the injected coolant is cooled strongly to obtain the requisite density ratio. All three velocity components were measured using a nonintrusive stereoscopic particle image velocimetry (PIV) system...
Journal Articles
Article Type: Technical Papers
J. Turbomach. April 2006, 128(2): 367–378.
Published Online: July 15, 2005
... porous medium approach for the bristle pack. The effectiveness of various conceptual geometries has been outlined in terms of flow field formation. Results disclose unique effects of geometry on pressure and flow fields such that a longer front plate drives outward radial flow while playing a protective...
Journal Articles
Article Type: Technical Papers
J. Turbomach. April 2006, 128(2): 379–389.
Published Online: July 15, 2005
.... , 2006 , “ Effects of Geometry on Brush Seal Pressure and Flow Fields: I. Front Plate Configurations ,” ASME J. Turbomach. 0889-504X , 128 , pp. 367 – 378 . seals (stoppers) plates (structures) computational fluid dynamics design engineering geometry turbomachinery The brush...
Journal Articles
Article Type: Technical Papers
J. Turbomach. April 2006, 128(2): 349–356.
Published Online: February 1, 2005
... is found to have a secondary effect on the location of transition inception, as compared to the effect of roughness height. 01 10 2004 01 02 2005 surface roughness gas turbines blades geometry boundary layers flow instability shear flow flow separation Surface...
Journal Articles
Article Type: Technical Papers
J. Turbomach. July 2002, 124(3): 461–471.
Published Online: July 10, 2002
...J. E. Sargison, Mem. ASME; S. M. Guo; M. L. G. Oldfield, Mem. ASME; G. D. Lock; A. J. Rawlinson This paper presents the first experimental measurements on an engine representative nozzle guide vane, of a new film-cooling hole geometry, a con ¯ verging s ¯ lot - h ole ¯ or console. The patented...
Journal Articles
Article Type: Technical Papers
J. Turbomach. July 2001, 123(3): 552–557.
Published Online: February 1, 2000
...” consists of capturing and controlling the geometry of a suitable portion of an aeroengine (e.g., a blade row, or an internal cooling system or a fan-plus-nacelle), building a mesh system, solving the flow and responding to an appropriately visualized flow field by changing or accepting the geometry...
Journal Articles
Article Type: Technical Papers
J. Turbomach. January 2001, 123(1): 33–39.
Published Online: February 1, 2000
...A. Tsalavoutas, Research Assistant; K. Mathioudakis, Associate Professor; A. Stamatis, Research Associate; M. Smith, Principal Engineer, The influence of faults in the variable geometry (variable stator vanes) system of a multistage axial compressor on the performance of an industrial gas turbine...
Journal Articles
Article Type: Technical Papers
J. Turbomach. October 2001, 123(4): 758–765.
Published Online: February 1, 1999
... Institute February 1999. Paper No. 99-GT-46. Review Chair: D. C. Wisler. 01 February 1999 gas turbines cooling film flow surface phenomena geometry temperature measurement infrared spectra thermal conductivity finite element analysis Film cooling of thermally highly loaded...