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Keywords: Fluids
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Journal Articles
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. October 2018, 140(10): 102503.
Paper No: GTP-17-1346
Published Online: July 9, 2018
...Bradley R. Nichols; Roger L. Fittro; Christopher P. Goyne Reduced oil supply flow rates in fluid film bearings can cause cavitation, or lack of a fully developed hydrodynamic film layer, at the leading edge of the bearing pads. Reduced oil flow has the well-documented effects of higher bearing...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2018, 140(11): 112601.
Paper No: GTP-17-1369
Published Online: June 27, 2018
.... 072016 . 10.1088/1755-1315/49/7/072016 [21] Hosseinimanesh , H. , Devals , C. , Nennemann , B. , Reggio , M. , and Guibault , F. , 2016 , “ A Numerical Study of Francis Turbine Operation at No-Load Condition ,” ASME J. Fluids Eng. , 139 ( 1 ), p. 011104 . 10.1115/1.4034422...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. October 2018, 140(10): 102603.
Paper No: GTP-17-1513
Published Online: June 25, 2018
... Syst. , 31 ( 1 ), pp. 35 – 41 . https://www.energy.siemens.com/hq/pool/hq/energy-topics/technical-papers/Fast%20cycling%20and%20rapid%20start-up.pdf [2] Cohen , L. S. , and Hanratty , T. J. , 1968 , “ Effect of Waves at a Gas-Liquid Interface on a Turbulent Air Flow ,” J. Fluid Mech...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2018, 140(8): 081701.
Paper No: GTP-17-1352
Published Online: May 15, 2018
... and NO concentration in the CO 2 turbine exhaust gas) is the contacting time of the working fluid and cooling water within the DCC. Liquid residence time and vapor–liquid contact time can be controlled by variable speed control on an external pump-around or by holdups within the contacting media, as well as column...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2018, 140(8): 082507.
Paper No: GTP-17-1124
Published Online: May 15, 2018
... to measure inlet pressure, outlet pressure, rotational speed, and barrier fluid flow rate acquiring flow-head characteristic curves. Moreover, empirical generalized characteristic curves are deduced from experimental observations obtained from the present study and previous companion work. The generalized...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2018, 140(8): 082501.
Paper No: GTP-17-1106
Published Online: April 12, 2018
... fluids and for seals with complex geometries. This results in much uncertainty in the estimation of the dynamic seal forces, which often leads to unexpected system behavior. This paper presents the results of a method suitable for on-site identification of uncertain dynamic annular seal forces...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2018, 140(6): 062504.
Paper No: GTP-17-1481
Published Online: February 21, 2018
... glycol (PAG) oil with low concentration of CO 2 (<30%). A three-dimensional (3D) computational fluid dynamic (CFD) model of the bearing was developed and validated against the experimental data. The mixture composition and the resultant mixture viscosity were calculated as a function of pressure...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2018, 140(6): 062501.
Paper No: GTP-17-1410
Published Online: January 17, 2018
... external journal bearing oil flow, an approach to decompose an actual journal bearing into simplified models is proposed. Preliminary modeling considerations are discussed. The findings and conclusions are used to create a three-dimensional (3D), two-component computational fluid dynamics (CFD) sector...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2018, 140(6): 062602.
Paper No: GTP-17-1478
Published Online: January 17, 2018
.... The curvature of the housing is varied in the Y–Z plane until rub or close-to-wall rub is expected. The curvature needed for a rub with a 1X 1cP fluid is 7.5 deg of curvature. Curvature has little impact on stability. With both 1X 30cP and 3X 30cP, the maximum curvature for a static rub is over 25 deg...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2018, 140(5): 052502.
Paper No: GTP-16-1576
Published Online: November 21, 2017
... (FFS) and Rayleigh step designs are known to produce positive fluid stiffness. However, there is very limited modeling or experimental data available on the hydrostatic fluid forces generated from either design. A quasi-one-dimensional (1D) method has been developed to describe both designs...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2018, 140(3): 032601.
Paper No: GTP-17-1185
Published Online: October 17, 2017
... speed. Ideally the pump speed, hence, the pump required power should be as low as possible. However, setting the scavenge ratio to one may risk flooding as air bubbles in the fluid are inevitable. Therefore, the scavenge ratio is always set to higher than one (scavenge ratio of four is a typical value...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2018, 140(2): 021202.
Paper No: GTP-17-1350
Published Online: October 10, 2017
... of attack. Regions were defined on suction-side x-pressure force plots using the validated computational fluid dynamics (CFD) data-set that showed where and how much drag could be reduced. At 20 deg angle of attack, there was a potential to reduce up to 20% drag contained within the separated flow region...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2018, 140(2): 022801.
Paper No: GTP-16-1421
Published Online: October 3, 2017
... OWER . Manuscript received August 24, 2016; final manuscript received July 17, 2017; published online October 3, 2017. Assoc. Editor: Stani Bohac. 24 08 2016 17 07 2017 Design optimization Engines Fluids China has been the world's largest light duty engine market since...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2018, 140(2): 021502.
Paper No: GTP-17-1316
Published Online: October 3, 2017
... at different moments of the process. For instance, during phase two, the flame kernel may not survive to harsh local flow conditions. Therefore, the spark location is a very important parameter for burner designers. Burners Combustion Combustors Experimental Flame Fluids Fuels Gas turbine...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. October 2017, 139(10): 101202.
Paper No: GTP-17-1022
Published Online: May 16, 2017
... Fluidmechanische Untersuchung Eines Zwei- Phasen-Ejektors Fuer Flugtriebwerke ” Diploma Thesis (Design and Fluid Mechanical Investigation of a Two-Phase Flow Ejector for Aero Engines), Lehrstuhl Fuer Thermodynamik (Department of Thermo-Dynamics), Munich Technical University, Munich, Germany. [14] Menter , F...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. September 2017, 139(9): 092804.
Paper No: GTP-16-1580
Published Online: April 19, 2017
... of the difficulties in the multiple injections is to control fuel-spray behaviors during opening and closing of valve; flow rate and spray penetration which are changed due to slow velocity of fluid during opening and closing of valve cause nonuniformity of air/fuel mixture that results in the increase of PM. Fuel...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. September 2017, 139(9): 092501.
Paper No: GTP-16-1192
Published Online: April 11, 2017
... load and fluid stiffness. In this study, two groove types are investigated—Rayleigh step and inclined groove. The study uses a design of experiments approach and a Reynolds equation solver to explore the design space. Key parameters have been identified that can be used to optimize a seal design...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2017, 139(8): 082605.
Paper No: GTP-16-1489
Published Online: March 28, 2017
... NGINEERING FOR G AS T URBINES AND P OWER . Manuscript received October 7, 2016; final manuscript received December 29, 2016; published online March 28, 2017. Editor: David Wisler. 07 10 2016 29 12 2016 Aeronautical propulsion Computational fluid dynamics Engines Fluids Gas turbine...