Выходит 8 номеров в год
ISSN Печать: 1065-5131
ISSN Онлайн: 1563-5074
IF:
2.3
5-Year IF:
1.8
Immediacy Index:
0.2
Eigenfactor:
0.00037
JCI:
0.6
SJR:
0.433
SNIP:
0.593
CiteScore™::
4.3
H-Index:
35
Indexed in
SWIRL-ENHANCED LAMINAR FORCED CONVECTION THROUGH AXIALLY TWISTED RECTANGULAR DUCTS-PART 2, HEAT TRANSFER
Get access
Краткое описание
Convective heat transfer in low Reynolds number (10 ≤ Re ≤ 1000) fully developed swirl flows produced in axially twisted rectangular ducts is characterized. Computational results are presented to highlight the effects of the flow field, which is altered by variations in the duct geometry (cross-sectional height-to-width aspect ratio: 0.5 ≤ α ≤ 1.0; and 180° helical-twist pitch-to-hydraulic-diameter ratio: 3.0 ≤ ξ ≤ 12.0) and flow rate, on the temperature distribution and heat transfer coefficient. The two primary wall heating/cooling conditions (T and H1) are considered, with flows representing a wide range of viscous liquids (5 ≤ Pr ≤ 100). Increasing swirl-induced mixing as α → 0.5, ξ → 3.0, and Re > O[100], characterized by pronounced core circulation accompanied with multiple peripheral vortices, is found to enhance the heat transfer coefficient by 2.6 to 14 times that in an equivalent straight duct. The larger benefits accrue in higher Pr liquids, and 2.4 to 13 times higher heat transfer rate can be accommodated on a fixed pumping power basis; alternatively, 50% to 90% reduction in heat exchanger surface area can be achieved on a fixed pressure drop and heat load basis
-
Bhadouriya Rambir, Agrawal Amit, Prabhu S.V., Experimental and numerical study of fluid flow and heat transfer in a twisted square duct, International Journal of Heat and Mass Transfer, 82, 2015. Crossref
-
Manglik Raj M., Enhancement of Convective Heat Transfer, in Handbook of Thermal Science and Engineering, 2017. Crossref
-
Manglik Raj M., Enhancement of Convective Heat Transfer, in Handbook of Thermal Science and Engineering, 2018. Crossref
-
Eiamsa-Ard S., Samravysin P., Characterization of Heat Transfer by Overlapped-Quadruple Counter Tapes, Journal of Heat Transfer, 140, 11, 2018. Crossref
-
Saha Sujoy Kumar, Ranjan Hrishiraj, Emani Madhu Sruthi, Bharti Anand Kumar, Active and Passive Techniques: Their Applications, in Introduction to Enhanced Heat Transfer, 2020. Crossref
-
Zimparov Ventsislav D., Angelov Milcho S., Petkov Valentin M., Maximum benefits from the use of enhanced heat transfer surfaces, International Communications in Heat and Mass Transfer, 134, 2022. Crossref
-
Shi Dantong, Lin Kuan-Ting, Jog Milind A., Manglik Raj M., Role of Three-Dimensional Swirl in Forced Convection Heat Transfer Enhancement in Wavy-Plate-Fin Channels, Journal of Heat Transfer, 144, 5, 2022. Crossref
-
Wang Tao, Zhang Qiang, Song KeWei, Zhang Kun, Su Mei, Wu Xiang, Thermodynamic characteristics of a novel combination of three-start twisted tube and oval dimples, Case Studies in Thermal Engineering, 37, 2022. Crossref