Flow and Heat Transfer Mechanism and Optimization Design of Spirally Corrugated Tubes

被引:0
作者
Pan, Chuang [1 ]
Dai, Yuande [1 ]
机构
[1] Nanchang Univ, Sch Adv Mfg, Nanchang 330031, Jiangxi, Peoples R China
基金
中国国家自然科学基金;
关键词
spirally corrugated tube; friction coefficient; secondary flow; performance evaluation criteria; field synergy; TRANSFER ENHANCEMENT; RESISTANCE CHARACTERISTICS; TURBULENT-FLOW; SINGLE-START; FORCED-CONVECTION; PERFORMANCE; FRICTION; SYNERGY; DEPTH; WATER;
D O I
10.1115/1.4065791
中图分类号
O414.1 [热力学];
学科分类号
摘要
Spirally corrugated tubes are widely used as high-efficiency heat transfer tubes in various industrial production fields due to their simple manufacturing, low cost, and bidirectional enhanced heat transfer ability. In this study, numerical simulations were conducted on the flow in multi-start spirally corrugated tubes with an equivalent inner diameter of D-i = 20 mm. The effects of starts value of 1-8, pitch ratio p/D-i of 1.5-3.0, ripple depth ratio e/D-i of 0.05-0.20, and Reynolds number Re of 5000-3000 on the heat transfer and resistance characteristics of the multi-start spirally corrugated tubes were studied, and the mechanism of heat transfer enhancement was demonstrated by field synergy theory. In addition, through the performance evaluation standard performance evaluation criteria (PEC), the optimization design of the multi-start spirally corrugated tube was achieved. The research results indicate that increasing the start value and ripple depth improves heat transfer performance despite higher flow resistance. As the pitch increases, the heat transfer performance decreases, and the flow resistance correspondingly decreases. When the start value is 8, p/D-i = 1.5, e/D-i = 0.20, and Re = 20,000, it is the optimal PEC value, equal to 1.764. This will be of great significance for the design, manufacturing, and practical application of spirally corrugated tubes.
引用
收藏
页数:11
相关论文
共 41 条
[1]   Experimental studies on heat transfer in the annuli with corrugated inner tubes [J].
Ahn, SW .
KSME INTERNATIONAL JOURNAL, 2003, 17 (08) :1226-1233
[2]   Numerical investigations of heat transfer enhancement in a house shaped-corrugated channel: Combination of nanofluid and geometrical parameters [J].
Ajeel, Raheem K. ;
Salim, W. S-I W. ;
Hasnan, Khalid .
THERMAL SCIENCE AND ENGINEERING PROGRESS, 2020, 17
[3]   Enhancement of heat transfer in six-start spirally corrugated tubes [J].
Balla, Hyder H. .
CASE STUDIES IN THERMAL ENGINEERING, 2017, 9 :79-89
[4]   Design and analysis of PCM integrated solar receiver with double-helical tube structure [J].
Bashir, Muhammad Anser ;
Ali, Hafiz Muhammad .
JOURNAL OF ENERGY STORAGE, 2024, 84
[5]   SOME PERSPECTIVES ON ENHANCED HEAT-TRANSFER - 2ND-GENERATION HEAT-TRANSFER TECHNOLOGY [J].
BERGLES, AE .
JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1988, 110 (4B) :1082-1096
[6]   Computational investigation of heat transfer enhancement by alternating inclined ribs in tubular heat exchanger [J].
Bhattacharyya, Suvanjan ;
Chattopadhyay, Himadri ;
Benim, Ali Cemal .
PROGRESS IN COMPUTATIONAL FLUID DYNAMICS, 2017, 17 (06) :390-396
[7]   Large Eddy Simulation of a single-started helically ribbed tube with heat transfer [J].
Campet, Robin ;
Zhu, Manqi ;
Riber, Eleonore ;
Cuenot, Benedicte ;
Nemri, Marouan .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2019, 132 :961-969
[8]   Characterization of the effect of corrugation angles on hydrodynamic and heat transfer performance of four-start spiral tubes [J].
Chen, XD ;
Xu, XY ;
Nguang, SK ;
Bergles, AE .
JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 2001, 123 (06) :1149-1158
[9]   STUDIES ON THERMOHYDRAULICS OF SINGLE-START AND MULTI-START SPIRALLY CORRUGATED TUBES FOR WATER AND TIME-INDEPENDENT POWER LAW FLUIDS [J].
GANESHAN, S ;
RAO, MR .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1982, 25 (07) :1013-1022
[10]   Effects of upwind area of tube inserts on heat transfer and flow resistance characteristics of turbulent flow [J].
Guo, Jian ;
Yan, Yuexiang ;
Liu, Wei ;
Jiang, Fangming ;
Fan, Aiwu .
EXPERIMENTAL THERMAL AND FLUID SCIENCE, 2013, 48 :147-155