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

Abstract

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.

Key words: heat transfer enhancement, rib, groove, rectangular channel, turbulent flow

摘要： 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.

关键词: heat transfer enhancement, rib, groove, rectangular channel, turbulent flow

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.

唐新宜, 朱冬生. Experimental and Numerical Study on Heat Transfer Enhancement of a Rectangular Channel with Discontinuous Crossed Ribs and Grooves[J]. Chinese Journal of Chemical Engineering, 2012, 20(2): 220-230.

References

1 Sara,O.N.,Pekdemi,T.,Yapici,S.,Yilmaz,M.,“Heat-transfer enhancement in a channel flow with perforated rectangular blocks”,Int.J.Heat Fluid Flow,22(5),509-518(2001).
2 Webb,R.L.,Principles of Enhanced Heat Transfer,John Wiley Sons,Chichester(1994).
3 Hu,Z.J.,Shen,J.,“Heat transfer enhancement in a converging passage with discrete ribs”,Int.J.Heat Mass Transfer,39(8),1719-1727(1996).
4 Eiamsa-ard,S.,Promvonge,P.,“Thermal characteristics of turbulent rib-grooved channel flows”,Int.Commun.Heat Mass Transfer,36(7),705-711(2009).
5 Eiamsa-ard,S.,Promvonge,P.,“Influence of double-sided delta-wing tape insert with alternate-axes on flow and heat transfer characteristics in a heat exchanger tube”,Chin.J.Chem.Eng.,19(3),410-423(2011).
6 Kaewkohkiat,Y.,Kongkaitpaiboon,V.,Eiamsa-ard,S.,Pimsarn,M.,“Heat transfer enhancement in a channel with rib-groove turbulators”,AIP Conf.Proc.,1207(1),311-316(2010).
7 Bilen,K.,Cetin,M.,Gul,H.,Balta,T.,“The investigation of groove geometry effect on heat transfer for internally grooved tubes”,Appl.Therm.Eng.,29(4),753-761(2009).
8 Layek,A.,Saini,J.S.,Solanki,S.C.,“Effect of chamfering on heat transfer and friction characteristics of solar air heater having absorber plate roughened with compound turbulators”,Renew.Energy,34(5),1292-1298(2009).
9 Layek,A.,Saini,J.S.,Solanki,S.C.,“Heat transfer and friction characteristics for artificially roughened ducts with compound turbulators”,Int.J.Heat Mass Transfer,50(24),4845-4854(2007).
10 Song,W.M.,Meng,J.A.,Li,Z.X.,“Numerical study of air-side performance of a finned flat tube heat exchanger with crossed discrete double inclined ribs”,Appl.Therm.Eng.,30(13),1797-1804(2010).
11 Li,X.W.,Meng,J.A.,Guo,Z.Y.,“Turbulent flow and heat transfer in discrete double inclined ribs tube”,Int.J.Heat Mass Transfer,52(3),962-970(2009).
12 Shah,R.K.,London,A.L.,Laminar Flow Forced Convection in Ducts,Academic Press,Inc.,New York(1978).
13 Gnielinski,V.,“New equations for heat and mass transfer in turbulent pipe and channel flows”,Int.Chem.Eng.,16(2),359-368(1976).
14 Petukhov,B.S.,Hartnett,J.P.,Advances in Heat Transfer,Vol.6,Academic Press,New York,504-564(1970).
15 Yang,S.M.,Tao,W.Q.,Heat Transfer,Higher Education Press,Beijing(2006).(in Chinese)
16 Kline,S.J.,McClintock,F.A.,“Describing uncertainties in single-sample experiment”,ASME Mech.Eng.,75,3-8(1953).
17 Peng,W,Jiang,P.X.,Wang,Y.P.,Wei,B.Y.,“V-shape ribs Experimental and numerical investigation of convection heat transfer in channels with different types of ribs”,Appl.Therm.Eng.,31(13),2702-2708(2011).

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