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Research Papers: Gas Turbines: Heat Transfer

Convective Heat Transfer and Pressure Loss in Rectangular Ducts With Inclined Pin-Fin on a Wavy Endwall

[+] Author and Article Information
Kenichiro Takeishi

e-mail: takeishi@mech.eng.osaka-u.ac.jp

Yutaka Oda

e-mail: oda@mech.eng.osaka-u.ac.jp
Department of Mechanical Engineering,
Osaka University,
2-1 Yamadaoka, Suita,
Osaka 565-0871, Japan

Yoshiaki Miyake

Guidance & Propulsion Division,
Aerospace Systems,
Mitsubishi Heavy Industries Ltd.,
1200 Higashitanaka, Komaki,
Aichi 485-8561, Japan
e-mail: yoshiaki_miyake@mhi.co.jp

Yusuke Motoda

Washlet Development Department No.1,
Toto Ltd.,
1-1-1 Maigaoka, Kokuraminami-ku,
Kitakyushu, Fukuoka 803-0823, Japan
e-mail: yusuke.motoda@jp.toto.com

1Corresponding author.

Contributed by the International Gas Turbine Institute (IGTI) of ASME for publication in the Journal of Engineering for Gas Turbines and Power. Manuscript received October 4, 2012; final manuscript received November 7, 2012; published online May 20, 2013. Editor: Dilip R. Ballal.

J. Eng. Gas Turbines Power 135(6), 061902 (May 20, 2013) (10 pages) Paper No: GTP-12-1390; doi: 10.1115/1.4023261 History: Received October 04, 2012; Revised November 07, 2012

Local endwall heat transfer characteristics and overall pressure loss of normal and inclined pin fins arrayed in rectangular ducts with flat and wavy endwalls have been investigated to improve the cooling efficiency of jet engine combustor liners. The detailed time-mean local Nusselt number profiles were measured using a naphthalene sublimation method based on the heat/mass transfer analogy. Four kinds of angled pin fins (−45, 0, and +45 deg with a flat endwall, and −45 deg with a wavy endwall) were tested and compared with each other. As a result, the average heat transfer coefficient on the flat endwall of normal pin fins was higher than that of the angled pin fins. The average heat transfer coefficient of −45-deg inclined pin fins with a wavy endwall is the same or a little higher than the heat transfer coefficient of those with a flat endwall; however, the pressure loss of the −45-deg inclined pin fins with a wavy endwall is less than the pressure loss of those with a flat endwall. Corresponding numerical simulations using large eddy simulation (LES) with the mixed time scale (MTS) model have been also conducted at Red = 1000 for fully developed regions, and the results have shown good quantitative agreement with mass transfer experiments. It can be concluded that wavy endwalls can realize better heat transfer with less pressure loss as long as the aim consists in enhancing endwall heat transfer in inclined pin-fin channels.

Copyright © 2013 by ASME
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References

Sparrow, E. M., Ramsey, J. W., and Altemani, C. A. C., 1980, “Experiments on In-Line Pin Fin Arrays and Performance Comparisons With Staggered Arrays,” ASME J. Heat Transfer, 102, pp. 44–50. [CrossRef]
Metzger, D. E., Berry, R. A., and Bronson, J. P., 1982, “Developing Heat Transfer in Rectangular Ducts With Arrays of Short Pin Fins,” ASME J. Heat Transfer, 104, pp. 700–706. [CrossRef]
Van Fossen, G. J., 1982, “Heat-Transfer Coefficients for Staggered Arrays of Short Pin Fins,” ASME J. Eng. Power, 104, pp. 268–274. [CrossRef]
Brigham, B. A., and Van Fossen, G. J., 1984, “Length to Diameter Ratio and Row Number Effects in Short Pin Fin Heat Transfer,” ASME J. Eng. Gas Turbines Power, 106, pp. 241–245. [CrossRef]
Peng, Y., 1984, “Heat Transfer and Friction Loss Characteristics of Pin Fin Cooling Configurations,” ASME J. Eng. Gas Turbines Power, 106, pp. 246–251. [CrossRef]
Metzger, D. E., Shepard, W. B., and Haley, S.W., 1986, “Row Resolved Heat Transfer Variations in Pin-Fin Arrays Including Effects of Non-Uniform Arrays and Flow Convergence,” ASME Paper No. 86-GT-132.
Armstrong, J., and Winstanley, D., 1988, “A Review of Staggered Array Pin Fin Heat Transfer for Turbine Cooling Applications,” ASME J. Turbomach., 110, pp. 94–103. [CrossRef]
Metzger, D. E., Fan, C. S., and Haley, S. W., 1984, “Effects of Pin Shape and Array Orientation on Heat Transfer and Pressure Loss in Pin Fin Arrays,” ASME J. Eng. Gas Turbines Power, 106, pp. 252–257. [CrossRef]
Chen, Z., Li, Q., Meier, D., and Warnecke, H.-J., 1997, “Convective Heat Transfer and Pressure Loss in Rectangular Ducts With Drop-Shaped Pin Fins,” Heat Mass Transfer, 33, pp. 219–224. [CrossRef]
Li, Q., and Chen, Z., 1998, “Heat Transfer and Pressure Drop Characteristics in Rectangular Channels With Elliptic Pin Fins,” Int. J. Heat Fluid Flow, 19, pp. 245–250. [CrossRef]
Uzol, O., and Camci, C., 2005, “Heat Transfer, Pressure Loss and Flow Field Measurements Downstream of Staggered Two-Row Circular and Elliptical Pin Fin Arrays,” ASME J. Heat Transfer, 127, pp. 457–471. [CrossRef]
Chyu, M. K., 1990, “Heat Transfer and Pressure Drop for Short Pin-Fin Arrays With Pin-Endwall Fillet,” ASME J. Heat Transfer, 112, pp. 926–932. [CrossRef]
Baughn, J. W., Ireland, P. T., Jones, T. V., and Saniei, N., 1989, “A Comparison of the Transient and Heated-Coating Methods for the Measurement of Local Heat Transfer Coefficients on a Pin Fin,” ASME J. Heat Transfer, 111, pp. 877–881. [CrossRef]
Lau, S. C., Kim, Y. S., and Han, J. C., 1987, “Local Endwall Heat/Mass Transfer Distributions in Pin Fin Channels,” AIAA J. Thermophys. Heat Transfer, 1(4), pp. 365–372. [CrossRef]
Donahoo, E. E., Camic, C., Kulkarni, A. K., and Belegundu, A. D., 1999, “A Computational Visualization of Three Dimensional Flow: Finding Optimum Heat Transfer and Pressure Drop Characteristic From Short Cross-Pin Arrays and Comparison With Two Dimensional Calculations,” ASME Paper No. 99-GT-257.
Takeishi, K., Nakae, T., Watanabe, K., and Hirayama, M., 2001, “Heat Transfer Characteristics of a Flow Passage With Long Pin Fins and Improving Heat Transfer Coefficient by Adding Turbulence Promoters on an Endwall,” ASME Paper No. 2001-GT-178.
Oda, Y., Takeishi, K., Motoda, Y., Sugimoto, S., and Miyake, Y., 2009, “Heat Transfer Characteristics of Pin-Fin Arrays With Ribs to Cool Combustor Liners,” J. Therm. Sci. Technol., 4(4), pp. 507–517. [CrossRef]
Moriai, H., Miyake, Y., Takeishi, K., Oda, Y., and Motoda, Y., 2010, “Heat Transfer Characteristics of Inclined Pin-Fin Channels With a Wavy Endwall,” Proceedings of the 13th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu, HI, April 4–7, Paper No. ISROMAC13-TS70.
Oda, Y., Takeishi, K., Miyake, Y., Moriai, H., and Motoda, Y., 2010, “Numerical and Experimental Studies of Turbulent Heat Transfer in Inclined Pin-Fin Channels With a Wavy Endwall,” Proceedings of the 14th International Heat Transfer Conference, Washington, DC, August 8–13, ASME Paper No. IHTC14-23191. [CrossRef]
Inagaki, M., Kondoh, T., and Nagano, Y., 2005, “A Mixed-Time-Scale SGS Model With Fixed Model-Parameters for Practical LES,” ASME J. Fluid Eng., 127, pp. 1–13. [CrossRef]
Goldstein, R. J., and Cho, H. H., 1995, “A Review of Mass Transfer Measurements Using Naphthalene Sublimation,” Exp. Therm. Fluid Sci., 10, pp. 416–434. [CrossRef]
Moffat, R. J., 1988, “Describing the Uncertainties in Experimental Results,” Exp. Therm. Fluid Sci., 1, pp. 3–17. [CrossRef]
Murata, A., and Mochizuki, S., 2001, “Large Eddy Simulation of Turbulent Heat Transfer in an Orthogonally Rotating Square Duct With Angled Rib Turbulators,” ASME J. Heat Transfer, 123, pp. 858–867. [CrossRef]
Roe, P. L., 1986, “Characteristic-Based Schemes for the Euler Equations,” Ann. Rev. Fluid Mech., 18, pp. 337–365. [CrossRef]
Motoda, Y., Takeishi, K., Oda, Y., and Miyake, Y., 2009, “A Study on the Effect of Angled Pin Fins on Endwall Heat Transfer,” Proceedings of the International Conference on Power Engineering (ICOPE-09), Kobe, Japan, November 16–20, Vol. 2, pp. 73–78.
Gee, D. L., and Webb, R. L., 1980, “Forced Convection Heat Transfer in Helically Rib-Roughened Tubes,” Int. J. Heat Mass Transfer, 23, pp. 1127–1136. [CrossRef]

Figures

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Fig. 1

Schematic of experimental apparatus

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Fig. 2

Schematic of pin-fin configuration

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Fig. 3

Schematic of wavy endwall configuration

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Fig. 4

Computational domain

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Fig. 5

Local Nusselt number distribution (0 deg flat)

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Fig. 6

Local Nusselt number distribution (−45 deg flat)

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Fig. 7

Local Nusselt number distribution (+45 deg flat)

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Fig. 8

Local Nusselt number distribution (−45 deg wavy)

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Fig. 9

Comparison of Nusselt numbers

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Fig. 10

Averaged Nusselt number versus Reynolds number (at 5th row)

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Fig. 11

Comparing Nud distribution at Red = 1000

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Fig. 12

Comparing Nud distribution at Red = 1000

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Fig. 13

Contour maps of vertical velocity

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Fig. 14

Contour map of u and velocity vectors v and w

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Fig. 15

Contour map of turbulent intensity and velocity vectors of u and w

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