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Keywords: geometry
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Journal Articles
Publisher: ASME
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
Publisher: ASME
Article Type: Research Papers
J. Turbomach. January 2012, 134(1): 011019.
Published Online: May 31, 2011
... turbines Gaussian distribution geometry There is a need for reliability in gas turbine, in particular, for power generation and mechanical drive ( 1 ). As shown by Fadlun et al. ( 1 ) the operating point, fuel composition, and other macroparameters are subject to variations that affect...
Journal Articles
Journal Articles
Publisher: ASME
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
Publisher: ASME
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
Publisher: ASME
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
Journal Articles
Publisher: ASME
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
Publisher: ASME
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
Publisher: ASME
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
Publisher: ASME
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
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. April 2006, 128(2): 379–389.
Published Online: July 15, 2005
... various geometries of backing plate recess. Their aim was to reduce friction in order to control bristle hang-up and pressure stiffening. Morrison et al. ( 8 9 ) proposed balancing axial forces by pressurizing various backing plate cavities. This would result in the bristles having more freedom to move...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. April 2006, 128(2): 349–356.
Published Online: February 1, 2005
... of the Hyperbolic-Tangent Velocity Profile ,” J. Fluid Mech. 0022-1120 , 19 , pp. 543 – 556 . Published studies on boundary-layer transition do not provide information from which the effects of roughness geometry on the transition process in separation bubbles may be derived for the stochastically rough...
Journal Articles
Journal Articles
Publisher: ASME
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
Publisher: ASME
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
Publisher: ASME
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...