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Keywords: boundary layer turbulence
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Journal Articles
Article Type: Research Papers
J. Turbomach. July 2012, 134(4): 041020.
Published Online: July 25, 2011
... of film hole spacing, hole size, and TBC on surface heat transfer. Calculated capture efficiencies compare well with experimental results. 21 10 2010 03 12 2010 25 07 2011 25 07 2011 blades boundary layer turbulence coating techniques computational fluid dynamics cooling...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2012, 134(4): 041007.
Published Online: July 20, 2011
... ,” ASME J. Turbomach. 0889-504X , 128 , pp. 349 – 356 . 10.1115/1.2101852 07 09 2010 01 12 2010 20 07 2011 20 07 2011 aerodynamics blades boundary layer turbulence gas turbines heat transfer surface roughness In modern gas turbines, high efficiency...
Journal Articles
Article Type: Research Papers
J. Turbomach. May 2012, 134(3): 031020.
Published Online: July 15, 2011
... with it a boundary layer developing along the fuselage; the inlet is thus known as boundary-layer-ingesting (BLI) inlet. aerospace components aircraft boundary layer turbulence flow control Navier-Stokes equations transonic flow 06 07 2010 02 08 2010 15 07 2011 15 07 2011...
Journal Articles
Article Type: Research Papers
J. Turbomach. May 2012, 134(3): 031019.
Published Online: July 15, 2011
... 2011 15 07 2011 blades boundary layer turbulence bubbles flow instability flow separation laminar flow plates (structures) Although modern gas-turbine engines are highly developed, small improvements in performance can still yield significant economic benefits. Since...
Journal Articles
Article Type: Research Papers
J. Turbomach. May 2012, 134(3): 031018.
Published Online: July 15, 2011
... and turbulence production there is also broadly distributed. Proximity of the TLV to the pressure side of the neighboring blade also affects entrainment of flow into the incoming tip region. 05 07 2010 04 08 2010 15 07 2011 15 07 2011 boundary layer turbulence pumps rotors...
Journal Articles
Article Type: Research Papers
J. Turbomach. March 2012, 134(2): 021025.
Published Online: July 7, 2011
... 07 07 2011 07 07 2011 boundary layer turbulence cooling flow simulation jets turbines Although the advance in metallurgy clearly increased the potential temperature of the turbine component material, the cooling methods are the essential technology that allows higher turbine...
Journal Articles
Article Type: Research Papers
J. Turbomach. October 2011, 133(4): 041025.
Published Online: April 26, 2011
... 26 04 2011 26 04 2011 blades boundary layer turbulence bubbles computational fluid dynamics cooling heat transfer Mach number transonic flow turbines Steady CFD calculations were performed with a mixing-plane treatment between blade rows. Thus, the circumferential...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2011, 133(3): 031011.
Published Online: November 15, 2010
... layer turbulence computational fluid dynamics jet engines turbines The range and endurance of aircraft cruising at high altitude is limited by multiple factors, including the operational efficiency of the low pressure turbine. As aircraft elevation is increased, the operational Reynolds...
Journal Articles
Article Type: Research Papers
J. Turbomach. January 2011, 133(1): 011025.
Published Online: September 27, 2010
... diffuser aerodynamics aerospace engines boundary layer turbulence compressors flow geometry impellers Navier-Stokes equations shear turbulence 25 09 2008 06 01 2010 27 09 2010 27 09 2010 The present study indicates that the best agreement of numerical...
Journal Articles
Article Type: Research Papers
J. Turbomach. January 2011, 133(1): 011015.
Published Online: September 22, 2010
... for the first three cases but is much longer for X / P = 0.125 . This suggests that the transition may proceed through different mechanisms in this case. 09 04 2009 31 07 2009 22 09 2010 22 09 2010 blades boundary layer turbulence gas turbines heat transfer mass...
Journal Articles
Article Type: Research Papers
J. Turbomach. October 2010, 132(4): 041006.
Published Online: April 27, 2010
... boundary layer turbulence bubbles diffusion flow separation laser Doppler anemometry plates (structures) turbines wakes The flow inside turbomachinery turbine blade passages is inherently unsteady. Each blade row sheds turbulent wakes, which periodically convect through downstream passages...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2010, 132(3): 031010.
Published Online: March 25, 2010
...% augmentation relative to the smooth tripped baseline. The already turbulent nature of the tripped approach flow reduces the effect that the dimples have on the downstream heat transfer coefficient. aerodynamics blades boundary layer turbulence cooling gas turbines Today’s modern gas turbine...
Journal Articles
Article Type: Research Papers
J. Turbomach. April 2010, 132(2): 021019.
Published Online: January 21, 2010
... at zero-buoyancy condition, against R o at BP and FP locations. 20 08 2008 31 08 2008 21 01 2010 21 01 2010 boundary layer turbulence channel flow heat transfer rotational flow rotor blade cooling pin-fin rotating channel high rotating number...
Journal Articles
Article Type: Research Papers
J. Turbomach. April 2010, 132(2): 021004.
Published Online: January 11, 2010
... modeling for computational fluid dynamics are also reviewed. The conclusion remains that considerable research is yet necessary to fully understand the role of roughness in gas turbines. 13 12 2007 10 09 2008 11 01 2010 11 01 2010 boundary layer turbulence computational fluid...
Journal Articles
Article Type: Research Papers
J. Turbomach. January 2010, 132(1): 011016.
Published Online: September 18, 2009
... ( S / S 0 ) while the ordinate is the normal distance ( Y n ) above the airfoil suction surface. The abscissa has been exaggerated by a factor of about 5. aerospace components boundary layer turbulence flow instability jets turbines vortices wakes...
Journal Articles
Article Type: Research Papers
J. Turbomach. January 2010, 132(1): 011007.
Published Online: September 16, 2009
... at 0.63 C x downstream of the trailing edge is normalized on the nominal exit velocity for each case. At the higher Reynolds numbers, the boundary layer turbulence has decayed to about 4% of U e . A double peak is apparent, with the slightly higher peak resulting from the suction side...
Journal Articles
Article Type: Research Papers
J. Turbomach. October 2009, 131(4): 041016.
Published Online: July 9, 2009
... boundary layer turbulence confined flow shear turbulence wakes Aerofoils of a modern low-pressure turbine (LPT) are subjected to increasingly stronger pressure gradient as designers impose higher loading in an effort to improve efficiency and lower cost by reducing the number of blades...
Journal Articles
Article Type: Research Papers
J. Turbomach. October 2009, 131(4): 041013.
Published Online: July 6, 2009
... 2008 06 07 2009 aerodynamics aerospace components blades boundary layer turbulence bubbles compressors computational fluid dynamics flow measurement flow separation laminar flow pressure measurement stators wakes 2007 IGTI Best Technical Paper The leading-edge...
Journal Articles
Article Type: Research Papers
J. Turbomach. October 2009, 131(4): 041007.
Published Online: July 1, 2009
... heat flux reduction with a trench was higher than the case without a trench thus indicating lower heat transfer to the surface. blades boundary layer turbulence combustion equipment cooling flow measurement gas turbines jets liquid films stators vortices An endwall near...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2009, 131(3): 031017.
Published Online: April 20, 2009
... acknowledged. As only the roughness models without the transition model are validated in this section, the model names do not include the affix “-T” (see Ref. 1 ). 20 06 2008 05 08 2008 20 04 2009 aerodynamics blades boundary layer turbulence heat transfer laminar flow...