A multipassage internal cooling test model with a 180 deg U-bend at the hub was investigated. The flow is radially inward at the inlet passage while it is radially outward at the trailing edge passage. The aspect ratio (AR) of the inlet passage is 2:1 (AR = 2) while the trailing edge passage is wedge-shaped with side wall slot ejections. The squared ribs with P/e = 8, e/Dh = 0.1, α = 45 deg, were configured on both leading surface (LE) and trailing surface (TR) along the inlet passage, and also at the inner half of the trailing edge passage. Three rows of cylinder-shaped pin fins with a diameter of 3 mm were placed at both LE and TR at the outer half of the trailing edge passage. For without turning vane case, heat transfer on LE at hub turn region is increased by rotation while it is decreased on the TR. The presence of turning vane reduces the effect of rotation on hub turn portion. The combination of ribs, pin-fin array, and mass loss of cooling air through side wall slot ejection results in the heat transfer coefficient gradually decreased along the trailing edge passage. Correlation between regional heat transfer coefficients and rotation numbers is presented for with and without turning vane cases, and with channel orientation angle β at 90 deg and 45 deg.
Skip Nav Destination
Article navigation
April 2018
Research-Article
Heat Transfer in a Rib and Pin Roughened Rotating Multipass Channel With Hub Turning Vane and Trailing-Edge Slot Ejection
Hao-Wei Wu,
Hao-Wei Wu
Department of Mechanical Engineering,
Texas A&M University,
3123 TAMU,
College Station, TX 77843
Texas A&M University,
3123 TAMU,
College Station, TX 77843
Search for other works by this author on:
Hootan Zirakzadeh,
Hootan Zirakzadeh
Department of Mechanical Engineering,
Texas A&M University,
3123 TAMU,
College Station, TX 77843
Texas A&M University,
3123 TAMU,
College Station, TX 77843
Search for other works by this author on:
Je-Chin Han,
Je-Chin Han
Department of Mechanical Engineering,
Texas A&M University,
3123 TAMU,
College Station, TX 77843
e-mail: jc-han@tamu.edu
Texas A&M University,
3123 TAMU,
College Station, TX 77843
e-mail: jc-han@tamu.edu
Search for other works by this author on:
Luzeng Zhang,
Luzeng Zhang
Solar Turbines Incorporated,
2200 Pacific Highway,
San Diego, CA 92186
e-mail: zhang_luzeng_j@solarturbines.com
2200 Pacific Highway,
San Diego, CA 92186
e-mail: zhang_luzeng_j@solarturbines.com
Search for other works by this author on:
Hee-Koo Moon
Hee-Koo Moon
Solar Turbines Incorporated,
2200 Pacific Highway,
San Diego, CA 92186
2200 Pacific Highway,
San Diego, CA 92186
Search for other works by this author on:
Hao-Wei Wu
Department of Mechanical Engineering,
Texas A&M University,
3123 TAMU,
College Station, TX 77843
Texas A&M University,
3123 TAMU,
College Station, TX 77843
Hootan Zirakzadeh
Department of Mechanical Engineering,
Texas A&M University,
3123 TAMU,
College Station, TX 77843
Texas A&M University,
3123 TAMU,
College Station, TX 77843
Je-Chin Han
Department of Mechanical Engineering,
Texas A&M University,
3123 TAMU,
College Station, TX 77843
e-mail: jc-han@tamu.edu
Texas A&M University,
3123 TAMU,
College Station, TX 77843
e-mail: jc-han@tamu.edu
Luzeng Zhang
Solar Turbines Incorporated,
2200 Pacific Highway,
San Diego, CA 92186
e-mail: zhang_luzeng_j@solarturbines.com
2200 Pacific Highway,
San Diego, CA 92186
e-mail: zhang_luzeng_j@solarturbines.com
Hee-Koo Moon
Solar Turbines Incorporated,
2200 Pacific Highway,
San Diego, CA 92186
2200 Pacific Highway,
San Diego, CA 92186
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS. Manuscript received August 3, 2015; final manuscript received June 19, 2017; published online October 25, 2017. Assoc. Editor: Ting Wang.
J. Thermal Sci. Eng. Appl. Apr 2018, 10(2): 021011 (11 pages)
Published Online: October 25, 2017
Article history
Received:
August 3, 2015
Revised:
June 19, 2017
Citation
Wu, H., Zirakzadeh, H., Han, J., Zhang, L., and Moon, H. (October 25, 2017). "Heat Transfer in a Rib and Pin Roughened Rotating Multipass Channel With Hub Turning Vane and Trailing-Edge Slot Ejection." ASME. J. Thermal Sci. Eng. Appl. April 2018; 10(2): 021011. https://doi.org/10.1115/1.4037584
Download citation file:
Get Email Alerts
Numerical Analysis of Enhanced Forced Convection in Perforated Surface Wavy Plate-Fin Core
J. Thermal Sci. Eng. Appl
Related Articles
Heat Transfer and Pressure Loss in a Two-Pass, Rectangular Channel Featuring a Reduced Cross-Sectional Area After the 180-Deg Tip Turn With Different Turning Vane Configurations
J. Turbomach (September,2021)
Heat Transfer in a Rotating Cooling Channel (AR = 2:1) With Rib Turbulators and a Tip Turning Vane
J. Heat Transfer (October,2018)
Numerical Simulation of Flow and Heat Transfer in Rotating Cooling Passage With Turning Vane in Hub Region
J. Heat Transfer (February,2018)
Heat Transfer in a Rotating, Blade-Shaped, Two-Pass Cooling Channel With Various 45-Deg Rib Turbulators and a Tip Turning Vane
J. Thermal Sci. Eng. Appl (February,2023)
Related Proceedings Papers
Related Chapters
Adding Surface While Minimizing Downtime
Heat Exchanger Engineering Techniques
Extended Surfaces
Thermal Management of Microelectronic Equipment
Heat Transfer Enhancement by Using Nanofluids in Laminar Forced Convection Flows Considering Variable Properties
Proceedings of the 2010 International Conference on Mechanical, Industrial, and Manufacturing Technologies (MIMT 2010)