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1-18 of 18
Keywords: Vortex
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Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. May 2024, 146(5): 053801.
Paper No: HT-23-1205
Published Online: March 4, 2024
... to be largely the case for most holes on the pressure side, and some holes on the suction side. However, for holes near the downstream section of the suction surface of the blade, where the passage vortex is strongest, no value is found for the compound angle that could redirect the coolant along the blade...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. December 2003, 125(6): 1007–1016.
Published Online: November 19, 2003
...S. D. Gao; L. B. Wang; Y. H. Zhang; F. Ke Winglet vortex generators can be used to enhance the heat transfer performance of finned flat tube bank fin. The effects of the height of vortex generators (VG) on local heat transfer were studied using the naphthalene sublimation method and the optimum...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. October 2003, 125(5): 788–794.
Published Online: September 23, 2003
... introduced into the flow using delta-wing vortex generators. Mass transfer measurements, obtained using the naphthalene sublimation technique, were used to quantify the heat transfer characteristics of a baseline and enhanced array, and these results were compared to flow visualization and particle image...
Journal Articles
Publisher: ASME
Article Type: Technical Notes
J. Heat Mass Transfer. October 2003, 125(5): 947–950.
Published Online: September 23, 2003
...-Newtonian Polymers Rheological Thermal Turbulence Visualization Vortex Reduction of friction losses in turbulent flows caused by the presence of polymer additives was first reported about fifty years ago. Virk 1 examined friction factor and velocity profile results for a large number of high...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. August 2003, 125(4): 624–634.
Published Online: July 17, 2003
... conductive thin fins with lengths equal to 20, 35 and 50 percent of the side, positioned at 7 locations on the hot left wall were examined for Ra = 10 4 , 10 5 , 10 6 , and 10 7 and Pr = 0.707 (total of 84 cases). Placing a fin on the hot left wall generally alters the clockwise rotating vortex...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. February 2003, 125(1): 11–18.
Published Online: January 29, 2003
... received by the Heat Transfer Division April 29, 2002; revision received September 13, 2002. Associate Editor: C. Amon. 29 April 2002 13 September 2002 29 01 2003 heat transfer channel flow confined flow flow measurement Fluids Heat Transfer Internal Turbines Vortex...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. December 2002, 124(6): 1056–1063.
Published Online: December 3, 2002
... recirculating vortices compared to the case without a fin that exhibits a primary vortex and two small corner cells. A fin slows the flow near the anchoring wall and reduces the temperature gradients, thus degrading heat transfer capacity. A fin positioned near the top right corner of the cavity can reduce heat...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. December 2002, 124(6): 1158–1168.
Published Online: December 3, 2002
... measurements of convection coefficients are obtained using naphthalene sublimation, and the structure of the vortices is studied using flow visualization and vortex strength measurements. The pressure drop penalty associated with the heat transfer enhancement of the channel flow is also investigated...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. June 2002, 124(3): 546–552.
Published Online: May 10, 2002
...L. B. Wang; F. Ke; S. D. Gao; Y. G. Mei The analogy between heat and mass transfer has been used to obtain local and average heat transfer characteristics over a complete flat tube-fin element with four vortex generators (VGs) per tube. Several types of surfaces involved in heat transfer process...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. June 2002, 124(3): 460–469.
Published Online: May 10, 2002
...:
H. S. Lee. 02 02 2001 03 08 2001 10 05 2002 flow instability jets heat transfer stratified flow flow visualisation turbulence Jets Scaling Turbulence Unsteady Vortex A theoretical and experimental investigation of the temporal...
Journal Articles
Publisher: ASME
Article Type: Technical Notes
J. Heat Mass Transfer. June 2002, 124(3): 583–587.
Published Online: May 10, 2002
... Transfer Turbulence Vortex Heat transfer augmentation in the stagnation region due to freestream
turbulence has been studied extensively 1 2 3 4 5 6 7 .
Several studies 1 2 3 6 7 have been
performed to understand the physics...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. August 2001, 123(4): 682–687.
Published Online: February 12, 2001
... by the Heat Transfer Division April 18, 2000; revision received February 12, 2001. Associate Editor: B. Chung. 18 April 2000 12 February 2001 vortices wakes acoustic wave effects Heat Transfer Measurement Techniques Vortex Wakes Fluid in motion without any heat sources...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. August 2001, 123(4): 665–674.
Published Online: January 20, 2001
...; revision received January 20, 2001. Associate Editor: M. Faghri. 30 June 2000 20 January 2001 heat transfer turbulence vortices external flows stagnation flow Convection Experimental Heat Transfer Turbulence Vortex Heat transfer in the stagnation region...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. December 2001, 123(6): 1139–1148.
Published Online: November 3, 2000
... on wall temperatures around the cylinder were made. The excitation frequencies of the cylinder are selected at F e / F n = 0 , 0.5, 1, 1.5, 2, 2.5, and 3. The oscillation amplitude selected is less than a threshold value of A / D = 0.06 where synchronization of vortex shedding with the cylinder excitation...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. February 2001, 123(1): 51–62.
Published Online: May 17, 2000
..., 3500) is covered in water Pr = 6 . Besides the increase at the natural vortex shedding frequency, large increases in the heat transfer are found at certain superharmonics. By using Digital Particle Image Velocimetry/Thermometry (DPIV/T), the increase in the heat transfer rate is found to correlate...
Journal Articles
Publisher: ASME
Article Type: Technical Notes
J. Heat Mass Transfer. May 2000, 122(2): 376–380.
Published Online: November 9, 1999
.... Avedisian. 15 January 1999 09 November 1999 vortices flames chemically reactive flow jets confined flow combustion flow simulation Combustion Computational Heat Transfer Jets Vortex Active forcing of reacting flows has recently gained much attention as a means...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. November 1999, 121(4): 789–795.
Published Online: November 1, 1999
... are selected at F e /F n = 0, 0.5, 1, 1.5, 2, 2.5, and 3. These include excitations at harmonic, subharmonic, superharmonic, and nonharmonic frequencies. Synchronization of vortex shedding with the cylinder excitation occurs not only at F e /F n = 1 but also at F e /F n = 3, which can greatly enhance the heat...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. February 2000, 122(1): 58–65.
Published Online: July 27, 1999
...W. S. Tseng; W. L. Lin; C. P. Yin; C. L. Lin; T. F. Lin Stabilization of the buoyancy-driven unstable mixed convective vortex air flow in a bottom heated rectangular duct by tapering its top plate is investigated experimentally. Specifically, the duct is tapered so that its aspect ratio at the duct...