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Research Papers: Heat and Mass Transfer

Influence of Rotating Directions on Hydrothermal Characteristics of a Two-Pass Parallelogram Channel With Detached Transverse Ribs

[+] Author and Article Information
Tong Miin Liou

Professor
Department of Power Mechanical Engineering,
National Tsing Hua University,
No. 101, Section 2, Kuang-Fu Road,
Hsinchu 30013, Taiwan
e-mail: tmliou@pme.nthu.edu.tw

Shyy Woei Chang

Professor
Department of System and Naval Mechatronic
Engineering,
National Cheng Kung University,
No. 1, University Road,
Tainan City 701, Taiwan
e-mail: swchang@mail.ncku.edu.tw

Chih Yung Huang

Professor
Department of Power Mechanical Engineering,
National Tsing Hua University,
No. 101, Section 2, Kuang-Fu Road,
Hsinchu 30013, Taiwan
e-mail: cyhuang@pme.nthu.edu.tw

I An Lan

Department of Power Mechanical Engineering,
National Tsing Hua University,
No. 101, Section 2, Kuang-Fu Road,
Hsinchu 30013, Taiwan
e-mail: gandalflan@gmail.com

Shu Po Chan

Department of Power Mechanical Engineering,
National Tsing Hua University,
No. 101, Section 2, Kuang-Fu Road,
Hsinchu 30013, Taiwan
e-mail: tedchan0611@gmail.com

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received December 28, 2017; final manuscript received April 24, 2018; published online June 8, 2018. Assoc. Editor: Danesh K. Tafti.

J. Heat Transfer 140(10), 102004 (Jun 08, 2018) (17 pages) Paper No: HT-17-1776; doi: 10.1115/1.4040150 History: Received December 28, 2017; Revised April 24, 2018

The detailed Nusselt number distributions on leading and trailing endwalls together with the Fanning friction factors of a rotating two-pass parallelogram ribbed channel are simultaneously measured under forward and backward rotations. The tested Reynolds number, rotation number, density ratio, and buoyancy number are respectively in the ranges of 5000 < Re < 15,000, 0 < Ro < 0.3, 0.044<Δρ/ρ < 0.2, and 0 < Bu < 0.142. The area-averaged leading and trailing Nusselt numbers at forward rotations are 0.69–1.77 and 0.85–1.98 relative to the static-channel Nusselt number references, respectively. With backward rotations, the ratios of regionally averaged Nusselt numbers between rotating and static channels for leading and trailing endwalls fall in the respective range to 0.86–2 and 0.91–1.76. At both forward and backward rotations, all the f factors over leading endwall (LE) and trailing endwall (TE) are elevated from the static-channel levels and increased by increasing Ro. Channel averaged f/f0 ratios are respectively raised to 1.21–2.21 and 1.21–2.1 at forward and backward rotations. As the heat transfer enhancements (HTE) attributed to the presence of detached transverse ribs taking precedence of the accompanying f augmentations, all the thermal performance factors are above unity in the range of 1.26–2.94. Relative to the similar rotating two-pass parallelogram channel with attached 90 deg ribs, the detached ribs generate the higher degrees of heat transfer enhancements with the larger extents of f augmentations.

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References

Ekkad, S. V. , and Han, J. C. , 1997, “ Detailed Heat Transfer Distributions in Two-Pass Square Channels With Rib Turbulators,” Int. J. Heat Mass Transfer, 40(11), pp. 2525–2537. [CrossRef]
Kavas, İ. , 2015, “ Cooling Performance Investigation of a Two-Pass Rib-Roughened Channel,” Master thesis, Aerospace Engineering Department of Middle East Technical University, Ankara, Turkey.
Liou, T. M. , Chen, M. Y. , and Tsai, M. H. , 2002, “ Fluid Flow and Heat Transfer in a Rotating Two-Pass Square Duct With In-Line 90-Deg Ribs,” ASME J. Turbomach., 124(2), pp. 260–268. [CrossRef]
Shukla, A. K. , and Dewan, A. , 2015, “ Computational Study of Heat Transfer Enhancement Through Broken and Continuous Attached Ribs in a Square Channel,” First International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC), Thiruvananthapuram, India, Dec. 17–20, Paper No. IHMTC2015-350.
Liu, H. , and Wang, J. , 2011, “ Numerical Investigation on Synthetical Performances of Fluid Flow and Heat Transfer of Semiattached Rib-Channels,” Int. J. Heat Mass Transfer, 54(1–3), pp. 575–583. [CrossRef]
Liou, T. M. , Shuy, W. J. , and Tsao, Y. H. , 1998, “ Effect of Rib Height and Pitch on the Thermal Performance of a Passage Disturbed by Detached Solid Ribs,” ASME J. Turbomach., 120(3), pp. 581–588. [CrossRef]
Tsia, Y. P. , and Hwang, J. J. , 1999, “ Measurements of Heat Transfer and Fluid Flow in a Rectangular Duct With Alternate Attached-Detached Rib-Arrays,” Int. J. Heat Mass Transfer, 42(11), pp. 2071–2083. [CrossRef]
Liou, T. M. , Chang, S. W. , Lan, Y. A. , Chan, S. P. , and Liu, Y. S. , 2017, “ Heat Transfer and Flow Characteristics of Two-Pass Parallelogram Channels With Attached and Detached Transverse Ribs,” ASME J. Heat Transfer, 139(4), p. 042001. [CrossRef]
Wagner, J. H. , Johnson, B. V. , and Hajek, T. J. , 1991, “ Heat Transfer in Rotating Passages With Smooth Walls and Radial Outward Flow,” ASME J. Turbomach., 113(1), pp. 42–51. [CrossRef]
Johnson, B. V. , Wagner, J. H. , and Graziani, R. A. , 1992, “ Heat Transfer in Rotating Serpentine Passages With Trips Normal to the Flow,” ASME J. Turbomach., 114(4), pp. 847–857. [CrossRef]
Johnson, B. V. , Wagner, J. H. , Steuber, G. D. , and Yeh, F. C. , 1994, “ Heat Transfer in Rotating Serpentine Passages With Trip Skewed to the Flow,” ASME J. Turbomach., 116(1), pp. 113–123. [CrossRef]
Parsons, J. A. , Han, J. C. , and Zhang, Y. , 1996, “ Wall Heating Effect on Local Heat Transfer in a Rotating Two-Pass Square Channel With 90° Rib Turbulators,” Int. J. Heat Mass Transfer, 37(9), pp. 1411–1420. [CrossRef]
Chang, S. W. , and Morris, W. D. , 2003, “ Heat Transfer in a Radially Rotating Square Duct Fitted With In-Line Transverse Ribs,” Int. J. Therm. Sci., 42(3), pp. 267–282. [CrossRef]
Abdel-Wahab, S. , and Tafti, D. K. , 2004, “ Large Eddy Simulation of Flow and Heat Transfer in a 90 Deg Ribbed Duct With Rotation: Effect of Coriolis and Centrifugal Buoyancy Forces,” ASME J. Turbomach., 126(4), pp. 627–636. [CrossRef]
Kim, K. M. , Lee, D. H. , and Cho, H. H. , 2007, “ Detailed Measurement of Heat/Mass Transfer and Pressure Drop in a Rotating Two-Pass Duct With Transverse Ribs,” Heat Mass Transfer, 43(8), pp. 801–815. [CrossRef]
Sleiti Ahmad, K. , and Kapat, J. S. , 2008, “ Effect of Coriolis and Centrifugal Forces on Turbulence and Transport at High Rotation and Density Ratios in a Rib-Roughened Channel,” Int. J. Therm. Sci., 47(5), pp. 609–619. [CrossRef]
Saha, A. K. , and Acharya, S. , 2006, “ Turbulent Heat Transfer in Ribbed Coolant Passages of Different Aspect Ratios: Parametric Effects,” ASME J. Heat Transfer, 129(4), pp. 449–463. [CrossRef]
Agarwal, P. , Acharya, S. , and Nikitopoulos, D. E. , 2003, “ Heat Transfer in 1:4 Rectangular Passages With Rotation,” ASME J. Turbomach., 125(4), pp. 726–733. [CrossRef]
Morris, W. D. , and Farhadi Rahmat-Abadi, K. , 1996, “ Convective Heat Transfer in Rotating Ribbed Tubes,” Int. J. Heat Mass Transfer, 39(11), pp. 2253–2266. [CrossRef]
Chang, S. W. , Liou, T. M. , Chiou, S. F. , and Chang, S. F. , 2008, “ Heat Transfer in High-Speed Rotating Trapezoidal Duct With Rib-Roughened Surfaces and Air Bleeds From the Wall on Apical Side,” ASME J. Heat Transfer, 130(6), p. 061702. [CrossRef]
Dutta, S. , Han, J. C. , and Lee, C. P. , 1996, “ Local Heat Transfer in a Rotating Two-Pass Ribbed Triangular Duct With Two Model Orientations,” Int. J. Heat Mass Transfer, 39(4), pp. 707–715. [CrossRef]
Lee, D. H. , Rhee, D. H. , Kim, K. M. , Cho, H. H. , and Moon, H. K. , 2009, “ Heat Transfer and Flow Temperature Measurements in a Rotating Triangular Channel With Various Rib Arrangements,” Heat Mass Transfer, 45(12), pp. 1543–1553. [CrossRef]
Chang, S. W. , Liou, T. M. , and Lee, T. H. , 2012, “ Thermal Performance of Developing Flow in a Radially Rotating Parallelogram Channel With 45° Ribs,” Int. J. Therm. Sci., 52, pp. 186–204. [CrossRef]
Chang, S. W. , Liou, T. M. , and Lee, T. H. , 2012, “ Thermal Performance Comparison Between Radially Rotating Ribbed Parallelogram Channels With and Without Dimples,” Int. J. Heat Mass Transfer, 55(13–14), pp. 3541–3559. [CrossRef]
Liou, T. M. , Chang, S. W. , and Yang, C. C. , 2014, “ Heat Transfer and Pressure Drop Measurements of Rotating Twin-Pass Parallelogram Ribbed Channel,” Int. J. Therm. Sci., 79, pp. 206–219. [CrossRef]
Arun, A. , and Prabhu, S. V. , 2007, “ Effect of Aspect Ratio, Channel Orientation, Rib Pitch-to-Height Ratio, and Number of Ribbed Walls on Pressure Drop Characteristics in a Rotating Channel With Detached Ribs,” Int. J. Rotating Mach., 2007, p. 72190. [CrossRef]
Chang, S. W. , Liou, T. M. , and Po, Y. , 2012, “ Coriolis and Rotating Buoyancy Effect on Detailed Heat Transfer Distributions in a Two-Pass Square Channel Roughened by 45° Ribs at High Rotation Numbers,” Int. J. Heat Mass Transfer, 53(7–8), pp. 1349–1363.
Liu, Y. S. , 2014, “ Experimental Studies of Fluid Flow in Two-Pass Parallelogram Channels With Smooth Wall and Attached/Detached 90-Degree Rib Arrays,” Master thesis, National Tsing Hua University, Hsinchu City, Taiwan.
Gee, D. L. , and Webb, R. L. , 1980, “ Forced Convection Heat Transfer in Helically Rib-Roughened Tubes,” Int. J. Heat Mass Transfer, 23(8), pp. 1127–1136. [CrossRef]
Kim, J. H. , Simon, T. W. , and Viskanta, R. , 1993, “ Journal of Heat Transfer Policy on Reporting Uncertainties in Experimental Measurements and Results,” ASME J. Heat Transfer, 115(1), pp. 5–6. [CrossRef]
Fu, W. L. , Wright, L. M. , and Han, J. C. , 2006, “ Rotational Buoyancy Effects on Heat Transfer in Five Different Aspect-Ratio Rectangular Channels With Smooth Walls and 45 Degree Ribbed Walls,” ASME J. Heat Transfer, 128(11), pp. 1130–1141. [CrossRef]
Li, Y. , Deng, H. , Xu, G. , and Tian, S. , 2015, “ Heat Transfer and Pressure Drop in a Rotating Two-Pass Square Channel With Different Ribs at High Rotation Numbers,” ASME Paper No. GT2015-44019.

Figures

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Fig. 1

Comparisons of (a) Nu/Nu, (b) f/f, (c) TPF against Re for various ribbed channels, and (d) variations of Nu/Nu0 against Ro for various rotating ribbed channels

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Fig. 2

Experimental facilities

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Fig. 3

(a) Flow pattern, (b) detailed, (c) centerline Nu0/Nu distributions on front and back walls, and (d) Nu¯0,A/Nu∞ against f0/f

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Fig. 4

Distributions of Nu on (a) trailing (b) leading endwalls at forward and backward rotations with fixed Ro of 0.1 at Re = 5000, 7500, and 10,000

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Fig. 5

Distributions of Nu on (a) trailing and (b) leading endwalls at forward and backward rotations with fixed Re of 5000 at Ro = 0.1, 0.2, and 0.3

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Fig. 9

Ψ1 variations against Ro for (a) trailing and (b) leading endwalls

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Fig. 6

Distributions of Nu on (a) trailing and (b) leading endwalls at forward and backward rotations at fixed Ro of 0.15 and fixed Re of 7500 with different Bu

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Fig. 7

Variations of Nu¯AA, B, C, D/Nu¯0,AFW, BW against Bu at Ro = 0.1 with Re = 5000, 7500, 10,000, 12,500 for (a) trailing endwalls A, D and (b) leading endwalls B, C

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Fig. 8

Variations of Nu¯AA,B,C,D/Nu¯0,AFW,BW against Bu at each fixed Ro with different Re for (a) trailing endwalls A, D with forward and backward rotations and (b) leading endwalls B, C at forward and backward rotations

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Fig. 10

Variations of Ψ2 against Ro for (a) trailing and (b) leading endwalls

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Fig. 11

Variations of (a) f¯/f¯0 against Bu and (b) Φ1,2 against Ro

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Fig. 12

Variations of TPF against Re for present rotating channel and various ribbed channels

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