Conjugate Mixed Convection Heat Transfer From a Shrouded Vertical Nonisothermal Heat Sink

被引：1

作者：

Das, Biplab ^{[1
]}

Giri, Asis ^{[2
]}

Debnath, Suman ^{[1
]}

机构：

[1] Natl Inst Technol Silchar, Dept Mech Engn, Silchar 788010, Assam, India

[2] North Eastern Reg Inst Sci & Technol, Dept Mech Engn, Itanagar 791109, Arunachal Prade, India

来源：

JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS | 2017年 / 9卷 / 04期

关键词：

mixed convection; conjugate transport; heat sink; friction factor; mass by-pass; correlation; PARALLEL PLATE CHANNEL; FIN ARRAY; NATURAL-CONVECTION; LONGITUDINAL FINS; RECTANGULAR FINS; FLUID-FLOW; RADIATION; PERFORMANCE; UNDERNEATH; CONDUCTION;

D O I：

10.1115/1.4035970

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A computational analysis of conjugate mixed convection heat transfer from shrouded vertical nonisothermal heat sink on a horizontal base is performed. The overall Nusselt number and the product of friction factor (f) and Reynolds number (Re) are found to vary significantly with the spacing of heat sink as well as with the clearance between shroud and heat sink. By increasing the fin conductance by 200%, an enhancement of Nusselt number is noted to be around 58%, while the same Nusselt number enhancement is 134% for isothermal fin, within the range of parametric studies. The fRe value for smaller fin spacing shows a maximum with clearances, while the same for higher fin spacing remains the same or increases with clearances. Finally, overall Nusselt number and friction factor are well correlated with the governing parameters of the problem.

引用

页数：14

共 33 条

[1] LAMINAR MIXED CONVECTION IN A SHROUDED FIN ARRAY
ACHARYA, S
PATANKAR, SV
[J]. JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1981, 103 (03): : 559 - 565
[2] Numerical investigation of shrouded fin array under combined free and forced convection
Al-Sarkhi, A
Abu-Nada, E
Akash, BA
Jaber, JO
[J]. INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2003, 30 (03) : 435 - 444
[3] [Anonymous], 1980, Numerical heat transfer and fluid flow
[4] COMBINED CONDUCTION, CONVECTION AND RADIATION IN A SLOT
BALAJI, C
VENKATESHAN, SP
[J]. INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 1995, 16 (02) : 139 - 144
[5] Parametric study of natural convection heat transfer from horizontal rectangular fin arrays
Baskaya, S
Sivrioglu, M
Ozek, M
[J]. INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2000, 39 (08) : 797 - 805
[6] Combined Energy and Exergy Analysis of a Nonisothermal Fin Array With Non-Boussinesq Variable Property Fluid
Das, Biplab
Giri, Asis
[J]. JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS, 2016, 8 (03)
[7] Mixed convective heat transfer from vertical fin array in the presence of vortex generator
Das, Biplab
Giri, Asis
[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2015, 82 : 26 - 41
[8] Conjugate conduction and convection underneath a downward facing non-isothermal extended surface: A numerical study
Das, Biplab
Giri, Asis
[J]. ENERGY CONVERSION AND MANAGEMENT, 2014, 88 : 15 - 26
[9] Second law analysis of an array of vertical plate-finned heat sink undergoing mixed convection
Das, Biplab
Giri, Asis
[J]. INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2014, 56 : 42 - 49
[10] Non-Boussinesq laminar mixed convection in a non-isothermal fin array
Das, Biplab
Giri, Asis
[J]. APPLIED THERMAL ENGINEERING, 2014, 63 (01) : 447 - 458

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