The heat transfer characteristics of a rotating pin-fin roughened wedge-shaped channel have been studied. The model incorporates ejection through slots machined on the narrower end of the wedge, simulating a rotor blade trailing edge. The copper plate regional average method is used to determine the heat transfer coefficient; pressure taps have been used to estimate the flow discharged through each slot. Tests have been conducted at high rotation and buoyancy numbers, in a pressurized rotating rig. Reynolds numbers investigated range from 10,000 to 40,000 and inlet rotation numbers range from 0 to 0.8. Pin-fins studied are made of copper. Results show high heat transfer in the proximity of the slot. A significant enhancement in heat transfer due to the pin-fins, compared with a smooth channel, is observed. Results also show a strong rotation effect, increasing significantly the heat transfer on the trailing surface and reducing the heat transfer on the leading surface.
Skip Nav Destination
e-mail: akhlsh@tamu.edu
e-mail: yhliu@mail.nctu.edu.tw
e-mail: jc-han@tamu.edu
Article navigation
June 2011
Research Papers
Heat Transfer in Trailing Edge Wedge-Shaped Pin-Fin Channels With Slot Ejection Under High Rotation Numbers
Akhilesh P. Rallabandi,
e-mail: akhlsh@tamu.edu
Akhilesh P. Rallabandi
Department of Mechanical Engineering, Turbine Heat Transfer Laboratory, Texas A&M University, College Station
, TX 77843-3123
Search for other works by this author on:
Yao-Hsien Liu,
e-mail: yhliu@mail.nctu.edu.tw
Yao-Hsien Liu
Department of Mechanical Engineering, National Chiao-Tung University
, Hsinchu 30010, Taiwan
Search for other works by this author on:
Je-Chin Han
e-mail: jc-han@tamu.edu
Je-Chin Han
Department of Mechanical Engineering, Turbine Heat Transfer Laboratory, Texas A&M University, College Station
, TX 77843-3123
Search for other works by this author on:
Akhilesh P. Rallabandi
Department of Mechanical Engineering, Turbine Heat Transfer Laboratory, Texas A&M University, College Station
, TX 77843-3123e-mail: akhlsh@tamu.edu
Yao-Hsien Liu
Department of Mechanical Engineering, National Chiao-Tung University
, Hsinchu 30010, Taiwan
e-mail: yhliu@mail.nctu.edu.tw
Je-Chin Han
Department of Mechanical Engineering, Turbine Heat Transfer Laboratory, Texas A&M University, College Station
, TX 77843-3123e-mail: jc-han@tamu.edu
J. Thermal Sci. Eng. Appl. Jun 2011, 3(2): 021007 (9 pages)
Published Online: July 22, 2011
Article history
Received:
July 22, 2010
Accepted:
February 27, 2011
Online:
July 22, 2011
Published:
July 22, 2011
Citation
Rallabandi, A. P., Liu, Y., and Han, J. (July 22, 2011). "Heat Transfer in Trailing Edge Wedge-Shaped Pin-Fin Channels With Slot Ejection Under High Rotation Numbers." ASME. J. Thermal Sci. Eng. Appl. June 2011; 3(2): 021007. https://doi.org/10.1115/1.4003746
Download citation file:
Get Email Alerts
Cited By
Design Optimization of a Shell-and-Tube Heat Exchanger based on Variable Baffle Cuts and Sizing
J. Thermal Sci. Eng. Appl
Related Articles
Heat Transfer in Trailing Edge, Wedge-Shaped Cooling Channels Under High Rotation Numbers
J. Heat Transfer (July,2008)
Numerical and Experimental Investigation of Turning Flow Effects on Innovative Pin Fin Arrangements for Trailing Edge Cooling Configurations
J. Turbomach (March,2012)
Latticework (Vortex) Cooling Effectiveness: Rotating Channel Experiments
J. Turbomach (July,2005)
Related Proceedings Papers
Related Chapters
Extended Surfaces
Thermal Management of Microelectronic Equipment, Second Edition
Extended Surfaces
Thermal Management of Microelectronic Equipment
Heat Transfer and Pressure Drop Correlations for Compact Heat Exchangers with Multi-Region Louver Fins
Inaugural US-EU-China Thermophysics Conference-Renewable Energy 2009 (UECTC 2009 Proceedings)