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Optimal design of transverse ribs in tubes for thermal performance enhancement

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  • Kim, Kyung Min
  • Kim, Beom Seok
  • Lee, Dong Hyun
  • Moon, Hokyu
  • Cho, Hyung Hee

Abstract

We conducted an optimization using the second-order response surface method to determine the transverse rib geometry required to achieve the highest cooling performance in a circular channel. The best rib geometry was based on three design variables; rib height, rib width, and rib pitch. The turbulent heat transfer coefficients and friction losses were first calculated and then used to determine the thermal performance. We constructed the response surfaces of the three design variables as functions of the average Nusselt number ratio, friction loss, and thermal performance. These functions led to the optimum design point at the highest heat transfer rate in the special case of an actual turbine cooling passage with a constant friction loss.

Suggested Citation

  • Kim, Kyung Min & Kim, Beom Seok & Lee, Dong Hyun & Moon, Hokyu & Cho, Hyung Hee, 2010. "Optimal design of transverse ribs in tubes for thermal performance enhancement," Energy, Elsevier, vol. 35(6), pages 2400-2406.
    • Handle: RePEc:eee:energy:v:35:y:2010:i:6:p:2400-2406
    DOI: 10.1016/j.energy.2010.02.020
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    References listed on IDEAS

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    1. Maeda, Naoya & Hirota, Masafumi & Fujita, Hideomi, 2005. "Turbulent flow in a rectangular duct with a smooth-to-rough step change in surface roughness," Energy, Elsevier, vol. 30(2), pages 129-148.
    2. Habib, M.A. & Mobarak, A.M. & Attya, A.M. & Aly, A.Z., 1992. "An experimental investigation of heat-transfer and flow in channels with streamwise-periodic flow," Energy, Elsevier, vol. 17(11), pages 1049-1058.
    3. Karwa, Rajendra & Solanki, S.C & Saini, J.S, 2001. "Thermo-hydraulic performance of solar air heaters having integral chamfered rib roughness on absorber plates," Energy, Elsevier, vol. 26(2), pages 161-176.
    4. Ravigururajan, T.S. & Bergles, A.E., 1996. "Optimization of in-tube enhancement for large evaporators and condensers," Energy, Elsevier, vol. 21(5), pages 421-432.
    5. Lee, Dong Hyun & Rhee, Dong-Ho & Kim, Kyung Min & Cho, Hyung Hee & Moon, Hee Koo, 2009. "Detailed measurement of heat/mass transfer with continuous and multiple V-shaped ribs in rectangular channel," Energy, Elsevier, vol. 34(11), pages 1770-1778.
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    Citations

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    Cited by:

    1. Shilong, Zhao & Yuxin, Fan, 2020. "Experimental and numerical study on the flame characteristics and cooling effectiveness of air-cooled flame holder," Energy, Elsevier, vol. 209(C).
    2. Kim, Kyung Min & Moon, Hokyu & Park, Jun Su & Cho, Hyung Hee, 2014. "Optimal design of impinging jets in an impingement/effusion cooling system," Energy, Elsevier, vol. 66(C), pages 839-848.
    3. Park, Jun Su & Park, Sehjin & Kim, Kyung Min & Choi, Beom Seok & Cho, Hyung Hee, 2013. "Effect of the thermal insulation on generator and micro gas turbine system," Energy, Elsevier, vol. 59(C), pages 581-589.
    4. Kim, Kyung Min & Jeon, Yun Heung & Yun, Namgeon & Lee, Dong Hyun & Cho, Hyung Hee, 2011. "Thermo-mechanical life prediction for material lifetime improvement of an internal cooling system in a combustion liner," Energy, Elsevier, vol. 36(2), pages 942-949.
    5. Song, Jiwoon & Lee, Keon Woo & Kim, Kyung Min & Cho, Hyung Hee, 2012. "Slot film cooling performance in combustor with flame holders," Energy, Elsevier, vol. 37(1), pages 533-539.
    6. Hwang, Sang Dong & Kwon, Hyun Goo & Cho, Hyung Hee, 2010. "Local heat transfer and thermal performance on periodically dimple-protrusion patterned walls for compact heat exchangers," Energy, Elsevier, vol. 35(12), pages 5357-5364.

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