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Keywords: turbomachinery
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Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2022, 144(1): 011023.
Paper No: GTP-21-1394
Published Online: October 20, 2021
... mostly focus on organizational tasks and heavily rely on the human factor for the exchange of complex information across different domains, organizations or systems. As a result, product development in turbomachinery manufacturing is still characterized by extensive iterative testing procedures between...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2021, 143(6): 061019.
Paper No: GTP-20-1289
Published Online: March 31, 2021
... cycle calculations to be performed without requiring turbomachinery performance maps. In contrast, traditional off-design cycle analyses require either scaling, calculating, or measuring compressor and turbine maps with boundary condition assumptions. In addition, the CFD simulations and the cycle...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2021, 143(3): 031022.
Paper No: GTP-20-1701
Published Online: February 24, 2021
... 24 02 2021 turbomachinery thermophysical CFD CHT experimental temperature heat transfer Today, turbocharging is a key technology in the development of efficient internal combustion engines. The goals are to increase the effective power output through higher mean pressure...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. April 2012, 134(4): 042602.
Published Online: January 30, 2012
...Stefano Bianchi; Alessandro Corsini; Luca Mazzucco; Lucilla Monteleone; Anthony G. Sheard Obtaining the right pitch in turbomachinery blading is crucial to efficient and successful operations. Engineers adjust the rotor’s pitch angle to control the production or absorption of power. Even for low...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. April 2012, 134(4): 042601.
Published Online: January 30, 2012
... computational fluid dynamics erosion finite element analysis turbomachinery Erosion affects axial and centrifugal fans in power plant boiler induced-draft systems. Particle laden flows characterize the operating environment as a consequence of the transport of solid or molten particles. This results...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. March 2012, 134(3): 032503.
Published Online: December 29, 2011
...Loïc Salles; Laurent Blanc; Fabrice Thouverez; Alexander M. Gouskov; Pierrick Jean Contact interfaces with dry friction are frequently used in turbomachinery. Dry friction damping produced by the sliding surfaces of these interfaces reduces the amplitude of bladed-disk vibration. The relative...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. March 2012, 134(3): 032502.
Published Online: December 28, 2011
...Daejong Kim; George Zimbru Air/gas foil bearings (AFB) have shown a promise in high-speed micro to mid-sized turbomachinery. Compared to rolling element bearings, AFBs do not require oil lubrication circuits and seals, allowing the system to be less complicated and more environment-friendly. Due...
Journal Articles
Article Type: Technical Briefs
J. Eng. Gas Turbines Power. February 2012, 134(2): 024501.
Published Online: December 8, 2011
...Tae Ho Kim; Jin Woo Song; Yong-Bok Lee; Kyuho Sim Identifying thermal characteristics of gas foil bearings (GFBs) provides an insight for successful implementation into high speed oil-free turbomachinery. The paper presents temperature measurements of a bump type GFB floating on a hollow shaft...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. February 2012, 134(2): 021602.
Published Online: December 7, 2011
...Fabrice Giuliani; Andreas Lang; Klaus Johannes Gradl; Peter Siebenhofer; Johannes Fritzer A specific actuator able to modulate the air feed of a gas a burner at a given frequency and amplitude is presented. The Combustion Department at the Institute for Thermal Turbomachinery and Machine Dynamics...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. February 2012, 134(2): 022501.
Published Online: December 2, 2011
...Tae Ho Kim; Yong-Bok Lee; Tae Young Kim; Kyong Ho Jeong Engineered design of modern efficient turbomachinery based on accurate model predictions is of importance as operating speed and rate power increase. Industrial applications use hydrodynamic fluid film bearings as rotor support elements due...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. January 2012, 134(1): 012504.
Published Online: November 7, 2011
... turbomachinery vibrations In order to improve safety, lifetime and energy efficiency of turbo machines, in particular the dynamic behavior of the rotor has to be analyzed and optimized. Thus, rotor unbalances, dynamic deformations and blade vibrations have to be monitored during operation for optimizing...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. December 2011, 133(12): 122503.
Published Online: August 29, 2011
... ability. 08 04 2011 21 04 2011 29 08 2011 29 08 2011 electric machines rotors turbomachinery Fluid film bearings supporting rotating machinery, as well as seals, affect the rotor-bearing system (RBS) static and dynamic forced response. A bearing reacts to rotor...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. November 2011, 133(11): 112501.
Published Online: May 13, 2011
...Luis San Andrés; Thomas Abraham Chirathadam Metal mesh foil bearings (MMFBs) are inexpensive compliant gas bearing type that aim to enable high speed, high temperature operation of small turbomachinery. A MMFB with an inner diameter of 28.00 mm and length of 28.05 mm is constructed with low cost...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. October 2011, 133(10): 102504.
Published Online: May 6, 2011
... this measurement by developing a patented, high-frequency, high-amplitude shaker system, resulting in excitation over most of the subsynchronous range. 10 05 2010 09 08 2010 06 05 2011 06 05 2011 damping design engineering machine bearings mechanical testing rotors turbomachinery...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. October 2011, 133(10): 103002.
Published Online: May 3, 2011
... of the presented approach, and comments are given on how various operating parameters affect system performance in the limaçon design. 29 08 2010 22 11 2010 03 05 2011 03 05 2011 stochastic programming thermodynamics turbomachinery two-phase flow Positive displacement...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. September 2011, 133(9): 093001.
Published Online: April 20, 2011
... experimental data. This paper presents an approach for regenerative pumps using a physically valid geometry model and by resolving the circulatory velocity in the peripheral direction. 21 07 2010 20 09 2010 20 04 2011 20 04 2011 pumps regenerative braking rotors turbomachinery...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. September 2011, 133(9): 092503.
Published Online: April 19, 2011
... coefficients and within 30% for the direct damping coefficients. 09 05 2010 31 07 2010 19 04 2011 19 04 2011 lubrication machine bearings machine testing rotors turbomachinery Tilting pad journal bearings (TPJBs) are widely used in the turbomachinery industry to help...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. August 2011, 133(8): 082301.
Published Online: April 11, 2011
... of applications such as laptops, small tools, etc. But microscale gas turbines could not only be used for generating electricity, they could also produce thrust for powering small unmanned aerial vehicles or similar devices. Beneath all the great design challenges with the rotating parts of the turbomachinery...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. August 2011, 133(8): 082503.
Published Online: April 6, 2011
... 08 2009 06 04 2011 06 04 2011 damping machine bearings rockets rotors turbomachinery Tilting pad (TP) journal bearings have long been the bearing of choice for high-speed turbomachines. The inherent stability of the bearing gives it substantial advantages over fixed-arc...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. July 2011, 133(7): 071703.
Published Online: March 17, 2011
...Jesuino Takachi Tomita; Luciano Porto Bontempo; João Roberto Barbosa The first steps of the turbomachinery design usually rely on numerical tools based on inviscid formulation with corrections using loss models to account for viscous effects, secondary flows, tip clearances, and shock waves...