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Keywords: turbulent
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Journal Articles
Article Type: Technical Briefs
J. Heat Transfer. October 2011, 133(10): 104502.
Published Online: August 17, 2011
...Himadri Chattopadhyay; Ali Cemal Benim In the present paper, turbulent heat transfer characteristics of submerged slot jets impinging on a moving surface at a constant temperature up to a Reynolds number of 50,000 have been studied. The turbulent flow field was resolved using the realizable k-ɛ...
Journal Articles
Article Type: Technical Briefs
J. Heat Transfer. October 2011, 133(10): 104503.
Published Online: August 17, 2011
...Chao-Kuang Chen; Yue-Tzu Yang; Kuei-Hao Chang In this study, Prandtl’s transposition theorem is used to stretch the ordinary coordinate-system in certain direction. The small wavy surface can be transferred into a calculable plane coordinate-system. The new governing equations of turbulent forced...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. August 2011, 133(8): 081701.
Published Online: April 26, 2011
...Hongwei Li; M. Razi Nalim; Charles L. Merkle A numerical method is developed with the capability to predict transient thermal boundary layer response under various flow and thermal conditions. The transient thermal boundary layer variation due to a moving compressible turbulent fluid of varying...
Journal Articles
Article Type: Technical Briefs
J. Heat Transfer. September 2007, 129(9): 1295–1299.
Published Online: October 24, 2006
...Y. T. Chen; J. H. Nie; B. F. Armaly; H. T. Hsieh; R. F. Boehm Developing turbulent forced convection flow in a two-dimensional duct is simulated for Reynolds numbers ranging from 4560 to 12,000. Simultaneously developing velocity and temperature distributions are reported by treating the inlet flow...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. January 2006, 128(1): 44–52.
Published Online: July 16, 2005
...Cha’o-Kuang Chen; Li-Wen Wu; Yue-Tzu Yang This study addresses the conjugate heat transfer problem of hydrodynamically developed turbulent flow in a circular pipe. An inverse method is used to estimate the time-varying inlet temperature and the outer-wall heat flux simultaneously on the basis...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. February 2005, 127(2): 159–164.
Published Online: March 15, 2005
...James Sucec The combined thermal law of the wall and wake is used as the approximating sequence for the boundary layer temperature profile to solve an integral thermal energy equation for the local Stanton number distribution. The velocity profile in the turbulent boundary layer was taken...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. July 2005, 127(7): 692–698.
Published Online: February 2, 2005
...Charles Booten; John K. Eaton The discrete Green’s function (DGF) for convective heat transfer was measured in a fully developed, turbulent pipe flow to test a new technique for simple heat transfer measurement. The 10 × 10 inverse DGF, G − 1 , was measured with an element length of approximately...
Journal Articles
Article Type: Technical Notes
J. Heat Transfer. October 2004, 126(5): 843–848.
Published Online: November 16, 2004
...G. Hetsroni; I. Tiselj and; R. Bergant; A. Mosyak and; E. Pogrebnyak A numerical investigation of the temperature field in a turbulent flume is presented. We consider the effect of the Prandtl number on the convection velocity of temperature fluctuations in a turbulent boundary layer, and focus...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. June 2004, 126(3): 312–320.
Published Online: June 16, 2004
.... Tong , L. S. , 1968 , “ Boundary-layer Analysis of the Flow Boiling Crisis ,” Int. J. Heat Mass Transfer , 11 , pp. 1208 – 1211 . Kutateladze, S. S., and Leont’ev, A. I., 1966, “Some Applications of the Asymptotic Theory of the Turbulent Boundary Layer,” Proceedings of the Third...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. April 2004, 126(2): 193–201.
Published Online: May 4, 2004
...S. Y. Won; N. K. Burgess; S. Peddicord; P. M. Ligrani, Fellow ASME Professor Spatially resolved Nusselt numbers, spatially-averaged Nusselt numbers, and friction factors are presented for a stationary channel with an aspect ratio of 4 and angled rib turbulators inclined at 45 deg with parallel...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. April 2004, 126(2): 202–210.
Published Online: May 4, 2004
...Debjit Mukerji; John K. Eaton; Robert J. Moffat Steady-state experiments with one-dimensional and two-dimensional calorimeters were used to study the convective heat transfer near sharp steps in wall temperature in a turbulent boundary layer. Data acquired under low and high freestream turbulence...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. October 2003, 125(5): 769–778.
Published Online: September 23, 2003
...G. I. Mahmood; P. M. Ligrani; K. Chen Measured local and spatially-averaged Nusselt numbers and friction factors (all time-averaged) are presented which show the effects of temperature ratio and variable properties in a rectangular channel with rib turbulators, and an aspect ratio of 4. The ratio...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. October 2003, 125(5): 779–787.
Published Online: September 23, 2003
...Hideki Yanaoka, Assoc. Prof.; Hiroyuki Yoshikawa, Research Associate; Terukazu Ota, Prof. Three-dimensional simulation of turbulent separated and reattached flow and heat transfer over a blunt flat plate is presented. The Reynolds number analyzed is 5000. The vortices shed from the reattachment...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. August 2003, 125(4): 587–594.
Published Online: July 17, 2003
...S. W. Moon; S. C. Lau Experiments have been conducted to study steady heat transfer between two blockages with holes and pressure drop across the blockages, for turbulent flow in a rectangular channel. Average heat transfer coefficient and local heat transfer distribution on one of the channel...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. December 2002, 124(6): 1019–1025.
Published Online: December 3, 2002
...Yun Chin; Muthu S. Lakshminarasimhan; Qing Lu; D. Keith Hollingsworth; Larry C. Witte A calibrated thermochromic liquid crystal technique was used to acquire wall temperature data for laminar and turbulent forced convection in an asymmetrically heated channel. The experiments were carried out...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. August 2002, 124(4): 601–608.
Published Online: July 16, 2002
...Jiin-Hong Lin; Cha’o-Kuang Chen; Yue-Tzu Yang A two-dimensional inverse analysis utilizes a different perspective to simultaneously estimate the center and surface thermal behavior of a heated cylinder normal to a turbulent air stream. A finite-difference method is used to discretize the governing...
Journal Articles
Article Type: Technical Notes
J. Heat Transfer. December 2001, 123(6): 1181–1184.
Published Online: February 12, 2001
... and Chu, 1975) for natural convection next to a vertical isothermal plate are reduced in terms of Π L = Ra / 1 + 0.492 Pr − 1 to Nu = 0.67 Π L 1 / 4 , 10 3 ⩽ Π L ⩽ 10 9 , for the laminar case, and in terms of Π T = Ra / 1 + 0.164 Pr − 1 to Nu = 0.15 Π T 1 / 3 , 10 9 ⩽ Π T ⩽ 10 12 , for the turbulent case...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. February 2001, 123(1): 65–69.
Published Online: September 5, 2000
...U. Goldberg, Senior Scientist, Three single equation turbulence models were applied to a test case of a Mach 9 flow over a 38 deg ramp. None of the models have been optimized to high-speed flows. Results indicate that the R t closure outperforms both the Spalart-Allmaras and Menter’s models...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. February 2001, 123(1): 70–76.
Published Online: May 26, 2000
...Keith A. Batchelder; John K. Eaton The heat transfer from a short uniform heat flux strip beneath a turbulent boundary layer with and without freestream turbulence was measured using a liquid crystal imaging technique. Freestream turbulence intensities were on the order of 12 percent. Data were...
Journal Articles
Article Type: Technical Papers
J. Heat Transfer. November 2000, 122(4): 693–700.
Published Online: May 18, 2000
...R. Sangras; Z. Dai; G. M. Faeth, Mem. ASME Measurements of the velocity properties of plane buoyant turbulent adiabatic wall plumes (adiabatic wall plumes) are described, emphasizing conditions far from the source where self-preserving behavior is approximated. The experiments involved helium/air...