Experimental and Numerical Study on Heat Transfer Enhancement of a Rectangular Channel with Discontinuous Crossed Ribs and Grooves

唐新宜; 朱冬生

doi:10.1016/S1004-9541(12)60382-6

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Experimental and Numerical Study on Heat Transfer Enhancement of a Rectangular Channel with Discontinuous Crossed Ribs and Grooves

FLUID DYNAMICS AND TRANSPORT PHENOMENA | Updated：2026-01-06

- Experimental and Numerical Study on Heat Transfer Enhancement of a Rectangular Channel with Discontinuous Crossed Ribs and Grooves
- Chinese Journal of Chemical Engineering Vol. 20, Issue 2, Pages: 220-230(2012)
- Affiliations：
  
  Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education, South China University of Technology,Guangzhou,China,510640
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(12)60382-6
  CLC：
- Published：2012
- Accepted：
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TANG Xinyi, ZHU Dongsheng. Experimental and Numerical Study on Heat Transfer Enhancement of a Rectangular Channel with Discontinuous Crossed Ribs and Grooves[J]. Chin.J.Chem.Eng., 2012, 20(2): 220-230.
DOI：

TANG Xinyi, ZHU Dongsheng. Experimental and Numerical Study on Heat Transfer Enhancement of a Rectangular Channel with Discontinuous Crossed Ribs and Grooves[J]. Chin.J.Chem.Eng., 2012, 20(2): 220-230. DOI： 10.1016/S1004-9541(12)60382-6.

摘要

Abstract

Experimental and numerical investigations have been conducted to study turbulent flow of water and heat transfer characteristics in a rectangular channel with discontinuous crossed ribs and grooves.The tests investigated the overall heat transfer performance and friction factor in ribbed and ribbed-grooved channels with rib angle of 30°.The experimental results show that the overall thermo-hydraulic performance for ribbed-grooved channel is increased by 10%-13.6% when compared to ribbed channel.The investigation on the effects of different rib angles and rib pitches on heat transfer characteristics and friction factor in ribbed-grooved channel was carried out using Fluent with SST(shear-stress transport)

k-ω

turbulence model.The numerical results indicate that the case for rib angle of 45° shows the best overall thermo-hydraulic performance

about 18%-36% higher than the case for rib angle of 0°.In addition

the flow patterns and local heat transfer characteristics for ribbed and ribbed-grooved channels based on the numerical simulation were also analyzed to reveal the mechanism of heat transfer enhancement.

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