Heat Transfer Characteristics in a Flow Channel Having a Single Row of Inclined V-Shaped Pins Mounted on the Endwall Surface

Authors

  • Saree Tongchom Department of Mechanical Engineering, Faculty of Engineering, Rajamangala University of Technology Srivijaya, Muang, Songkhla 90000, Thailand.
  • Pathomporn Narato Department of Mechanical Engineering, Faculty of Engineering, Rajamangala University of Technology Srivijaya, Muang, Songkhla 90000, Thailand.
  • Prateep Tippracha Department of Mechanical Engineering, Faculty of Engineering, Rajamangala University of Technology Srivijaya, Muang, Songkhla 90000, Thailand.
  • Ni-oh Puzu Department of Mechanical Engineering, Faculty of Engineering, Princess of Naradhiwas University, Muang, Narathiwat 96000, Thailand.
  • Chayut Nuntadusit Department of Mechanical and Mechatronics Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand.

Keywords:

Inclined angle of V-shaped pin (θ), heat transfer characteristics, thermal performance

Abstract

The objective of this research is to study heat transfer characteristics and thermal performance with a single row of inclined V-shaped pins in a flow channel. The cylindrical pins, each having a diameter of D=10 mm, were mounted on the heat transfer surface in a wind tunnel. The height of the pin was investigated at H=3.2D and H=2D. The pin-to-pin distance was fixed at Sy=2D in the spanwise direction. The effects of pin inclined angle were investigated at θ=30o, 45o, 60o, 90o, 120o, 135o, and 150o. The temperature distributions on the heat transfer surface were measured by using an infrared camera. Results for the case H/D=2 show that the V-shaped pin inclined angle of θ=30o, 45o, 60o, 120o, and 135o could enhance heat transfer downstream of the pin row when compared to the case of vertical pins with =90o. In the case where H/D=3.2, the heat transfer on the endwall surface with inclined V-shaped pins was poorer than that with vertical pins with =90o. The pressure drops in cases where H/D=2 and H/D=3.2 were reduced with mounting inclined V-shaped pins when compared to the case of vertical pins with =90o.

References

Chang, S.W., Yanng, T.L., Huang, C.C. and Chiang, K.F. 2008. Endwall heat transfer and Pressure drop in rectangular channels with attached and detached circular pin-fin array. International Journal of Heat and Mass Transfer 51(21-22): 5247-5259.

Choi, I.K., Kim, T., Song, S.J. and Lu, T.J. 2007. Endwall heat transfer and fluid flow around an inclined short cylinder. International Journal of Heat and Mass Transfer 50(5-6): 919-930.

Chyu, M.K., Oluyede, E.O. and Moon, H.K. 2007. Heat transfer on convective surface with pin-fins mounted in inclined angles, pp. 861-869. In ASME Turbo Expo 2007: Power for Land, Sea, and Air. The American Society of Mechanical Engineers, Montreal, Canada.

Do, K.D.C., Chung, D.H., Tran, D.Q., Dinh, C.T., Nguyen, Q.H. and Kim, K.Y. 2022. Numerical investigation of heat transfer characteristics of pin-fins with roughed endwalls in gas turbine blade internal cooling channels. International Journal of Heat and Mass Transfer 195: 123125.

Jubran, B.A., Hamdan, M.A. and Abdualh, R.M. 1993. Enhanced Heat Transfer Missing Pin and Optimization for Cylindrical Pin Fin Arrays. ASME Journal of Heat Transfer 115(3): 576-583.

Kline, S.J. and McClintock, F.A. 1953. Describing uncertainties in single-example experiments. Mechanical Engineering 75: 3-8.

Lau, S.C., Kim, Y.S. and Han, J.C. 1985. Effects of Fin Configuration and Entrance Length on Local Endwall Heat/Mass Transfer in a Pin Fin Channel. ASME Paper 85-WA/HT-62, The American Society of Mechanical Engineers, Houston, USA.

Lawson, S.A., Thrift, A.A., Thole, K.A. and Kohli, A. 2011. Heat transfer from multiple row arrays of low aspect ratio pin fin. International Journal of Heat and Mass Transfer 54(17-18): 4099-4109.

Luo, L., Yan, H., Du, W., Su, W., Wang, S. and Huang, D. 2022. Numerical study of a novel curved pin fin for heat transfer enhancement within aeroengine turbine blade. Aerospace Science and Technology 123: 107436.

Metzger, D.E., Berry, R.A. and Bronson, J.P. 1982. Developing Heat Transfer in Rectangular Ducts with Staggered Arrays of Short Pin Fins. ASME Journal of Heat Transfer 104(4): 700-706.

Moon, M.A. and Kim, K.Y. 2014. Analysis and optimization of fan-shaped pin-fin in a rectangular cooling channel. International Journal of Heat and Mass Transfer 72: 148-162.

Narato, P., Wae-hayee, M., Abdullah, M.Z. and Nuntadusit, C. 2020. Effect of pin inclination angle on flow and heat transfer characteristics for a row of pins in a flow channel. International Communications in Heat and Mass Transfer 110: 104396.

Narato, P., Wae-hayee, M., Kaewchoothong, N. and Nuntadusit, C. 2021. Heat transfer enhancement and flow characteristics in a rectangular channel having inclined pin arrays mounted on the endwall surface. International Communications in Heat and Mass Transfer 122: 105162.

Takeishi, K., Oda, Y., Miyake, Y. and Motoda, Y. 2012. Experimental and numerical study on the convective heat transfer and pressure drop in rectangular ducts with inclined pin-fin on a wavy endwall, pp. 1061-1072. In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. The American Society of Mechanical Engineers, Copenhagen, Denmark.

Webb, R.L. 1980. Air-Side Heat Transfer in Finned Tube Heat Exchangers. Heat Transfer Engineering 1(3): 33-49.

Yang, Z., Luo, L., Cheng, H., Yan, H., Du, W. and Zhou, X. 2024. Numerical study of heat transfer enhancement by using protrusions in curved pin-fin arrays. Physics of Fluids 36(5): 055132.

Downloads

Published

2024-08-28

How to Cite

Tongchom, S., Narato, P., Tippracha, P., Puzu, N.- oh, & Nuntadusit, C. (2024). Heat Transfer Characteristics in a Flow Channel Having a Single Row of Inclined V-Shaped Pins Mounted on the Endwall Surface. Recent Science and Technology, 16(3), 671–688. Retrieved from https://li01.tci-thaijo.org/index.php/rmutsvrj/article/view/260906

Issue

Vol. 16 No. 3 (2024): September - December 2024

Section

Research Article

License

Copyright (c) 2024 Rajamangala University of Technology Srivijaya Research Journal

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

The content and information in the article published in Journal of Rajamangala University of Technology Srivijaya It is the opinion and responsibility of the author of the article. The editorial journals do not need to agree. Or share any responsibility.