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Keywords: Turbines
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Journal Articles
Article Type: Research Papers
J. Heat Transfer. January 2012, 134(1): 011902.
Published Online: November 21, 2011
... or on the momentum thickness. Heat flux and temperature variations along the surface of a turbine blade may cause significant differences between the shapes and sizes of the velocity and thermal boundary layer profiles. Therefore, correlations are needed which relate the states of both the velocity and thermal...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. August 2011, 133(8): 081603.
Published Online: May 4, 2011
...C. Camci; B. Gumusel The present study explains a steady-state method of measuring convective heat transfer coefficient on the casing of an axial flow turbine. The goal is to develop an accurate steady-state heat transfer method for the comparison of various casing surface and tip designs used...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. December 2010, 132(12): 122202.
Published Online: September 21, 2010
...Pedro de la Calzada; Jose Javier Alvarez Impingement cooling through jet holes is a very attractive cooling system for heat rejection at high heat loaded areas as the leading edge of turbine vanes. Although some correlations and tools are available to dimension such systems, the variety...
Journal Articles
Article Type: Technical Briefs
J. Heat Transfer. November 2010, 132(11): 114501.
Published Online: August 13, 2010
... ,” Proceedings of the First International Symposium on Transport Phenomena , Hemisphere , Washington, D.C. , pp. 86 – 102 . Aronstein , D. C. , 1994 , “ Effects of Rotation on Impinging Jets for Turbine Cooling ,” Ph.D. thesis, University of Washington, Washington, D.C. Iacovides , H...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. February 2009, 131(2): 022202.
Published Online: January 5, 2009
...André Burdet; Reza S. Abhari The pulsation of film cooling jets in turbines is driven by the near hole pressure fluctuation caused by the deterministic interaction of stator/rotor blade rows. Jet pulsation is characterized by the coolant near hole reduced frequency Ω c and the pulsation amplitude...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. May 2008, 130(5): 051703.
Published Online: April 10, 2008
...M. T. Schobeiri; B. Öztürk; M. Kegalj; D. Bensing This paper attempts to provide a detailed insight into the heat transfer and aerodynamic behavior of a separation zone that is generated as a result of boundary layer development along the suction surface of a highly loaded low pressure turbine...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. December 2007, 129(12): 1666–1675.
Published Online: May 16, 2007
... on the Influence of Rotation On Heat Transfer in the Cooling Channels of Gas Turbine Rotor Blades ,” Proc. Inst. Mech. Eng. 0020-3483 10.1243/PIME_PROC_1979_193_032_02 , 193 , pp. 303 – 311 . Wagner , J. H. , Johnson , B. V. , and Hajek , T. J. , 1991 , “ Heat Transfer in Rotating...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. December 2007, 129(12): 1686–1696.
Published Online: April 16, 2007
...Charles W. Booten; John K. Eaton The inverse discrete Green’s function (IDGF) is a heat transfer coefficient that is valid for arbitrarily complex thermal boundary conditions. It was measured using a rapid experimentation technique in a generic serpentine turbine-blade cooling passage with rib...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. October 2007, 129(10): 1384–1394.
Published Online: March 1, 2007
...S. Han; R. J. Goldstein An experimental system is designed, constructed, and operated to make local measurements of heat transfer from constant-temperature surfaces in a linear turbine cascade. The system includes a number of embedded heaters and a control system to maintain the turbine blades...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. July 2007, 129(7): 778–789.
Published Online: January 5, 2007
...Aroon K. Viswanathan; Danesh K. Tafti The predictive capability of Detached Eddy Simulations (DES) is investigated in stationary as well as rotating ribbed ducts with relevance to the internal cooling of turbine blades. A number of calculations are presented at Re = 20,000 and rotation numbers...
Journal Articles
Article Type: Discussions
J. Heat Transfer. August 2006, 128(8): 855–856.
Published Online: June 18, 2005
...P. Razelos 15 02 2005 18 06 2005 hydrodynamics convection thermal resistance turbines blades heat exchangers cooling aerospace engines In this paper the authors present the experimental results of the effects of tip clearance on the thermal and hydrodynamic...
Journal Articles
Article Type: Technical Briefs
J. Heat Transfer. May 2005, 127(5): 540–543.
Published Online: May 25, 2005
...H. P. Wang; S. J. Olson; R. J. Goldstein The naphthalene sublimation technique is used to investigate the development of Taylor-Go¨rtler vortices over the pressure surface of a simulated high performance turbine blade. Large spanwise variation in mass transfer is observed downstream on the pressure...
Journal Articles
Article Type: Technology Review
J. Heat Transfer. May 2005, 127(5): 544–552.
Published Online: May 25, 2005
...Neil Zuckerman; Noam Lior Uses of impinging jet devices for heat transfer are described, with a focus on cooling applications within turbine systems. Numerical simulation techniques and results are described, and the relative strengths and drawbacks of the k - ε , k - ω , Reynolds stress model...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. May 2005, 127(5): 513–520.
Published Online: May 25, 2005
...Atul Kohli; David G. Bogard This experimental study was performed on a single row of round holes with a 35° surface angle, representing film cooling geometry commonly used in turbine engines. Simultaneous velocity and temperature measurements were made using a cold-wire in conjunction with a LDV...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. May 2005, 127(5): 472–485.
Published Online: May 25, 2005
...J. Bons, Associate Professor The application of Reynolds analogy 2 St / c f ≅ 1 for turbine flows is critically evaluated using experimental data collected in a low-speed wind tunnel. Independent measurements of St and c f over a wide variety of test conditions permit assessments of the variation...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. April 2005, 127(4): 425–433.
Published Online: March 30, 2005
..., and it is shown in Fig. 1 ( b ). Re is in the range of 10,000 to 32,000, which is typically employed in turbine blade cooling. Both the ribbed and smooth walls were set at constant wall heat flux condition. Figure 4 ( a ) shows the normalized averaged Nu and the Fanning friction factor for SSW and RSW...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. April 2005, 127(4): 404–413.
Published Online: March 30, 2005
...Roland S. Muwanga; Sri Sreekanth; Daniel Grigore; Ricardo Trindade; Terry Lucas A probabilistic approach to the thermal design and analysis of cooled turbine blades is presented. Various factors that affect the probabilistic performance of the blade thermal design are grouped into categories...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. April 2005, 127(4): 388–392.
Published Online: March 30, 2005
...G. Medic; P. A. Durbin It is shown how natural and forced unsteadiness play a major role in turbine blade trailing edge cooling flows. Reynolds averaged simulations are presented for a surface jet in coflow, resembling the geometry of the pressure side breakout on a turbine blade. Steady...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. April 2005, 127(4): 358–365.
Published Online: March 30, 2005
...Andrew C. Chambers; David R. H. Gillespie; Peter T. Ireland; Geoffrey M. Dailey Impingement channels are often used in turbine blade cooling configurations. This paper examines the heat transfer performance of a typical integrally cast impingement channel. Detailed heat transfer coefficient...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. April 2005, 127(4): 393–403.
Published Online: March 30, 2005
...Ting Wang; Matthew C. Rice The surface roughness over a serviced turbine airfoil is usually multiscaled with varying features that are difficult to be universally characterized. However, it was previously discovered in low free-stream turbulence conditions that the height of larger roughness...