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Keywords: cavitation
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Journal Articles
Numerical Analysis of a Two-Phase Turbine: A Comparative Study Between Barotropic and Mixture Models
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2025, 147(5): 051013.
Paper No: GTP-24-1706
Published Online: November 14, 2024
... have focused on condensation in the final stages of steam turbines, and on cavitation in hydraulic pumps and turbines. These applications, however, are not representative of the conditions in two-phase turbines, where a liquid-dominated mixture undergoes a large expansion ratio, leading...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2019, 141(6): 061017.
Paper No: GTP-18-1383
Published Online: February 25, 2019
... the process of inception, development, and saturated condition of cavitation phenomenon in injector nozzle. Second, the inner-nozzle flow characteristics are more sensitive to small diameter than large diameter under the short nozzle length, while the sensitivity of the inner-nozzle flow characteristics...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. September 2010, 132(9): 092901.
Published Online: June 17, 2010
...Maria Grazia De Giorgi; Daniela Bello; Antonio Ficarella The cavitation phenomenon interests a wide range of machines, from internal combustion engines to turbines and pumps of all sizes. It affects negatively the hydraulic machines’ performance and may cause materials’ erosion. The cavitation...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. August 2010, 132(8): 082801.
Published Online: May 20, 2010
..., as shown in Figs. 8 9 , are compared with the numerical results of Case (A) and Case (B), respectively. It is ascertained that the model with cavitation (Case (A)) can more satisfactorily reproduce the spray cone aspect, the spray angle, the tendency of the breakup process, and the instability...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. May 2010, 132(5): 052802.
Published Online: March 5, 2010
...Won Geun Lee; Rolf D. Reitz Cavitating flow within diesel injector passages has been investigated numerically using the homogeneous equilibrium model (HEM), which uses the barotropic assumption and the variable speed of sound of the mixture. To apply the HEM, the KIVA-3V code was modified...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. April 2010, 132(4): 042802.
Published Online: January 15, 2010
...S. Som; S. K. Aggarwal; E. M. El-Hannouny; D. E. Longman Cavitation and turbulence inside a diesel injector play a critical role in primary spray breakup and development processes. The study of cavitation in realistic injectors is challenging, both theoretically and experimentally, since...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. January 2010, 132(1): 012501.
Published Online: September 29, 2009
... on the modeling of dynamic film rupture. Usually, the cavitation models developed for journal bearings are applied to SFDs. Yet, the characteristic motion of the SFD results in the entrapment of air into the oil film, producing a bubbly mixture that cannot be represented by these models. There is a need...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Eng. Gas Turbines Power. October 2007, 129(4): 893–900.
Published Online: January 11, 2007
... rotational flow gas turbines cavitation cooling computational fluid dynamics turbulence heat transfer Figure 1 shows a simplified diagram of a high-pressure compressor rotor through the center of which is an axial flow of air that is used downstream for turbine cooling. When the cooling air...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Eng. Gas Turbines Power. April 2007, 129(2): 305–311.
Published Online: November 15, 2005
... Paper No. GT2004-53528. 31 10 2005 15 11 2005 Rayleigh-Benard instability convection cavitation gas turbines engine cylinders Navier-Stokes equations compressors vortices Rayleigh–Bénard convection rotating cavities Buoyancy-induced flow occurs in the rotating...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Eng. Gas Turbines Power. April 2006, 128(2): 434–445.
Published Online: June 1, 2005
... cavitation, i.e., cavitation induced by wave propagation, was proposed on the basis of a conservative homogeneous two-phase barotropic flow model of a pure liquid, its vapor, and a gas, both dissolved and undissolved. A physically consistent sound speed equation was set in a closed analytical form of wide...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Eng. Gas Turbines Power. October 2004, 126(4): 855–866.
Published Online: November 24, 2004
...Philip Bonello; Michael J. Brennan; Roy Holmes In this paper, the nonlinear interaction between an eccentric squeeze film damper and an unbalanced flexible rotor is investigated, paying particular attention to the effect of cavitation in the damper. A harmonic balance method that uses...
Journal Articles
Eberhard von Berg, Wilfried Edelbauer, Ales Alajbegovic, Reinhard Tatschl, Martin Volmajer, Breda Kegl, Lionel C. Ganippa
Publisher: ASME
Article Type: Technical Papers
J. Eng. Gas Turbines Power. October 2005, 127(4): 897–908.
Published Online: April 16, 2004
... for the cavitating flow. A primary breakup model is then applied at the nozzle orifice where it is coupled with the standard discrete droplet model. In the second approach the Eulerian multi-fluid model is applied for both the nozzle and spray regions. The developed primary breakup model, used in both approaches...