Numerical analysis of thermal dynamics and mixing performance in the blade-type static mixers

被引：6

作者：

Yu, Yanfang ^{[1
]}

Chen, Yaxin ^{[1
]}

Meng, Huibo ^{[1
]}

Yao, Yunjuan ^{[1
]}

Liu, Dongzhou ^{[2
]}

Wu, Jianhua ^{[1
]}

机构：

[1] Shenyang Univ Chem Technol, Engn & Technol Res Ctr Liaoning Prov Chem Stat Mi, Sch Mech & Power Engn, Shenyang 110142, Liaoning, Peoples R China

[2] Shenyang Oil & Gas Co Ltd, Shenyang 110142, Liaoning, Peoples R China

来源：

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2022年 / 36卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Field synergy number; Heat transfer; Static mixer; Thermal resistance; Total entropy generation; HEAT-TRANSFER ENHANCEMENT; TWISTED-TAPE; FLOW CHARACTERISTICS; EXCHANGER TUBE; LAMINAR-FLOW; ENTROPY GENERATION; INSERTS; SIMULATION; FLUIDS; CUT;

D O I：

10.1007/s12206-022-0644-2

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The turbulent thermal dynamics and mixing performance of kenics static mixer (KSM), lightnin static mixer (LSM) and Q-type static mixer (QSM) were numerically simulated with uniform heat flux within the range of Reynolds numbers (Re) between 6000 and 30000. The numerical predictions of Nusselt number (Nu) and friction coefficient (f) in KSM were well consistent with the experimental data. The dean vortices, thermal resistance, entropy generation and field synergy were fully analyzed to obtain the enhancement mechanism of heat transfer performance. The synergy performance between temperature gradient and flow field firstly decreased and then increased and are superior to that of KSM with increasing Re. With the same Re, the entropy generation rates of LSM are 0.93-0.94 times that of QSM. LSM is a better alternative consideration for convection mixing and heat transfer enhancement. Two new relationships between Nu and f under different dimensionless uniform heat flux are obtained.

引用

页码：3701 / 3716

页数：16

共 63 条

[41] Ottino J.M., 1989, The kinematics of mixing: stretching, chaos, and transport
[42] Paoletti S., 1989, ASME AES, V10, P21
[43] Intensification of thermo-hydraulic performance in heat exchanger tube inserted with multiple twisted-tapes
Piriyarungrod, N.
Kumar, Manoj
Thianpong, C.
Pimsarn, M.
Chuwattanakul, V
Eiamsa-ard, S.
[J]. APPLIED THERMAL ENGINEERING, 2018, 136 : 516 - 530
[44] Effects of geometry and flow rate on secondary flow and the mixing process in static mixers -: A numerical study
Regner, Marten
Ostergren, Karin
Tragardh, Christian
[J]. CHEMICAL ENGINEERING SCIENCE, 2006, 61 (18) : 6133 - 6141
[45] Laminar flow and heat transfer in a periodic serpentine channel with semi-circular cross-section
Rosaguti, Nathan R.
Fletcher, David F.
Haynes, Brian S.
[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2006, 49 (17-18) : 2912 - 2923
[46] Experimental Study of the Effects of Inclusion of Rectangular-Cut Twisted Tapes on Heat Transfer and Pressure Drop in a Round Tube
Ruengpayungsak, K.
Kumar, Manoj
Chuwattanakul, V.
Eiamsa-ard, S.
[J]. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING, 2019, 44 (12) : 10303 - 10312
[47] Thermohydraulic performance evaluation of heat exchangers equipped with centrally perforated twisted tape: Laminar and turbulent flows
Ruengpayungsak, Krit
Saysroy, Anucha
Wongcharee, Khwanchit
Eiamsa-Ard, Smith
[J]. JOURNAL OF THERMAL SCIENCE AND TECHNOLOGY, 2019, 14 (01)
[48] On chaotic advection in a static mixer
Saatdjian, E.
Rodrigo, A. J. S.
Mota, J. P. B.
[J]. CHEMICAL ENGINEERING JOURNAL, 2012, 187 : 289 - 298
[49] A review of the advancements made in helical baffles used in shell and tube heat exchangers
Salahuddin, Usman
Bilal, Muhammad
Ejaz, Haider
[J]. INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2015, 67 : 104 - 108
[50] Selimli S., 2021, J ENG RES PONTA GROS, V9, DOI [10.36909/jer.9887, DOI 10.36909/JER.9887]

← 1 2 3 4 5 6 7 →