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1-20 of 202
Keywords: heat transfer
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Journal Articles
Faezeh Rasimarzabadi, Hassan Azarkish, Alexander Crain, Steven Recoskie, Evgueni Bordatchev, Mahmood Shirazy
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2025, 147(3): 031032.
Paper No: GTP-24-1405
Published Online: November 22, 2024
.... The heat transfer of the heat sink was enhanced by optimizing fin dimensions and spacing, and fin design modification (a first in this application), based on system analysis of a kW scale hybrid/electric aircraft. The selected model as the optimized heat sink resulted in about 34% improvement in heat...
Journal Articles
Stefan Weihard, Tobias Willeke, Lukáš Božek, Vladimír Hort, Stefan Münch, Sebastian Spengler, Thomas Winter
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2025, 147(5): 051009.
Paper No: GTP-24-1577
Published Online: November 14, 2024
... the technological improvements achieved by this new generation of high-pressure compressor wheels. Turbo Expo, June 24–28, 2024. GT2024-121464. 30 08 2024 18 09 2024 14 11 2024 turbocharger heat transfer FEM CFD CHT The successful and efficient development of a new...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2025, 147(1): 011026.
Paper No: GTP-24-1407
Published Online: October 25, 2024
... 25 10 2024 heat transfer turbulence natural convection low-order modeling computational fluid dynamics Accurate prediction of natural convection heat transfer is of significance for investigating a wide range of applications such as gas turbines (during the shutdown...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. October 2024, 146(10): 101016.
Paper No: GTP-24-1184
Published Online: June 18, 2024
... methodology using the CFD solver ANSYS Fluent to accurately predict the conjugate heat transfer in the stator well area. The validation of the methodology relies on thorough comparison of the results with the MAGPI WP1 experimental temperature/pressure measurements. A geometry with axial cooling injection...
Journal Articles
Zhijia Yang, Byron Mason, Brian Wooyeol Bae, Fabrizio Bonatesta, Edward Winward, Richard Burke, Edward Chappell
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. September 2024, 146(9): 091014.
Paper No: GTP-23-1561
Published Online: April 4, 2024
... the piston cooling jet (PCJ), which is common in modern engines. Considerable research has been undertaken to identify generalized engine heat transfer correlations and to predict piston and cylinder wall surface temperatures during operation. Most of these correlations require in-cylinder combustion...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2024, 146(6): 061022.
Paper No: GTP-23-1609
Published Online: January 12, 2024
... capabilities for predicting flow and heat transfer inside rotating disk cavities. The Boussinesq approximation was implemented for modeling centrifugally buoyant flow and heat transfer in the rotating cavity with axial throughflow. This is validated using recent experimental data and CFD results. Good...
Journal Articles
Isacco Rafanelli, Giulio Generini, Antonio Andreini, Tommaso Diurno, Gabriele Girezzi, Andrea Paggini
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2024, 146(5): 051003.
Paper No: GTP-23-1514
Published Online: December 8, 2023
... the seal has a large impact on the temperature distribution, therefore a thermal design is needed to stay below the seal allowable temperature; this requirement has been even amplified in the last years with the DGS application to hot turbomachinery. Nowadays, numerical conjugate heat transfer (CHT...
Journal Articles
Sang-Guk Kang, Je Ir Ryu, Austen H. Motily, Prapassorn Numkiatsakul, Tonghun Lee, Waltraud M. Kriven, Kenneth S. Kim, Chol-Bum M. Kweon
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2023, 145(12): 121001.
Paper No: GTP-22-1559
Published Online: October 3, 2023
... 10 2023 CFD–FEA coupling computational fluid dynamics finite element analysis heat transfer ignition assistant thermomechanical stress Turbocharged direct injection compression ignition (CI) engines can benefit aircraft due to their fuel efficiency, power density, and reliability...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2022, 144(12): 121023.
Paper No: GTP-22-1335
Published Online: October 19, 2022
...Zixiang Sun; Feng Gao; John W. Chew; Dario Amirante Flow and heat transfer in axial compressor disk cavities involve strong interaction of axial throughflow at the disk bores with centrifugal buoyant flow in the cavities. This paper presents large eddy simulation (LES) of flow and heat transfer...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2021, 143(8): 081010.
Paper No: GTP-20-1511
Published Online: March 31, 2021
... have also studied thermal effects during interactions [ 14 , 15 ]. All these investigations show the continued effort toward the understanding of contact interaction phenomena. rotor–stator contact interaction vibration analysis heat transfer frictional heating Copyright © 2021 by ASME...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2021, 143(5): 051025.
Paper No: GTP-20-1779
Published Online: March 15, 2021
..., and investigated the flow and heat transfer characteristics in this alternating elliptical U-bend cooling channel thoroughly. Numerical simulations were performed by using three-dimensional steady solver of Reynolds-averaged Navier–Stokes equations with the standard k– ε turbulence model. The influence...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2021, 143(3): 031022.
Paper No: GTP-20-1701
Published Online: February 24, 2021
... its temperature characteristic and level. On the one hand, a numerical conjugate heat transfer (CHT) model of the automotive turbocharger investigated is developed using a commercial CFD-tool and a bidirectional, thermal coupling of the CFD-model with thermohydrodynamic lubrication simulation codes...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2019, 141(7): 071004.
Paper No: GTP-18-1449
Published Online: January 11, 2019
...-axis and the horizontal semi-axis are applied. Numerical studies are carried out under three Reynolds numbers. The flow characteristics and heat transfer performance of five DSC cases are compared with the benchmark impingement cooling case. The flow losses, cross-flow development, generated vortices...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2019, 141(1): 011005.
Paper No: GTP-18-1283
Published Online: September 14, 2018
... knowledge about the dominant heat transfer phenomena and flow structures, detailed numerical investigations are required. For the sake of the investigation of the warm-keeping process as found in the presented research, single and multistage numerical turbine models were developed. Furthermore...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2019, 141(1): 011013.
Paper No: GTP-18-1333
Published Online: September 14, 2018
.... Considerable improvements of the computing power and numerical simulation tools today allow detailed investigations of the heat transfer and the flow phenomena by conjugate-heat-transfer (CHT) simulations. However, these simulations are still restricted to smaller geometries mostly by the number of elements...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2018, 140(12): 121506.
Paper No: GTP-18-1091
Published Online: August 20, 2018
... and Larger Eddy Simulation of Turbulent Channel Flows ,” Encyclopedia of Fluid Mechanics, West Orange , NJ, pp. 1337 – 1391 . [21] Schmitt , P. , Poinsot , T. , Schuermans , B. , and Geigle , K. P. , 2007 , “ Large-Eddy Simulation and Experimental Study of Heat Transfer, Nitric Oxide...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2018, 140(12): 122802.
Paper No: GTP-18-1160
Published Online: August 9, 2018
... emissions. Between these two regions there are competing effects which result in relatively constant NO x . Energy Energy conversion Engines Experimental Fuel combustion Fuels Heat transfer Internal combustion engines Natural gas technology Petroleum engineering Thermodynamics Combustion...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2018, 140(12): 122602.
Paper No: GTP-18-1041
Published Online: August 6, 2018
... recovery and heat transfer effects cause a shortfall between the measured temperature and the flow stagnation temperature. To improve accuracy, the measurement shortfall is corrected post-test using data acquired at representative Mach numbers in a steady aerodynamic calibration facility. However, probes...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2018, 140(11): 112502.
Paper No: GTP-18-1169
Published Online: July 12, 2018
.... Excessive use of the secondary air results in a parasitic loss to the thermodynamic cycle of the engine so efficient use of the air is necessary to maintain efficiency. Convective heat transfer Engines Experimental Heat transfer Internal flow Mass Transfer Turbines Copyright © 2018...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2018, 140(11): 112803.
Paper No: GTP-18-1003
Published Online: July 5, 2018
..., heat transfer from the cylinder, short circuiting, sensible exhaust enthalpy, and incomplete combustion. The engine controls considered in the present study are speed, equivalence ratio, combustion phasing (ignition timing), cooling-air flow rate, and throttle. Several options are identified...
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