An experimental study of pressure drop and friction factor for laminar and transition opposing mixed convection in entrance region of rectangular duct

被引：7

作者：

Chong, DaoTong ^{[1
]}

Liu, JiPing ^{[1
]}

Yan, JunJie ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China

来源：

ENERGY CONVERSION AND MANAGEMENT | 2011年 / 52卷 / 05期

关键词：

Mixed convection; Opposing flow; Pressure drop; Friction factor; FLOW HEAT-TRANSFER; AIDING FLOW; TUBES; FLUX; AIR;

D O I：

10.1016/j.enconman.2010.11.023

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The laminar and transition opposing mixed convection was experimentally investigated when the air flow was in the entrance region through a rectangular duct. The pressure drops were measured under different air flowrates, convective heat fluxes and inclination angles, with the maximum value less than 6.0 Pa. The friction factors were calculated and analyzed under different Reynolds numbers, Grashof numbers and inclination angles. The results indicated that the pressure drops increased with the mean air velocity, and the friction factors showed different characteristics when the Reynolds numbers were larger or smaller than 1500. Finally, the correlations of friction factors were fitted considering the influences of Reynolds number, Grashof number, inclination angle and length to diameter ratio, which fitted the experimental data with the deviations less than +/- 10.0%. (c) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2272 / 2281

页数：10

共 38 条

[31] Experimental study of aspect ratio effects on longitudinal vortex flow in mixed convection of air in a horizontal rectangular duct
Chang, MY
Lin, TF
[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1998, 41 (4-5) : 719 - 733
[32] Experimental Study on Heat Transfer and Friction Factor in Laminar Forced Convection over Flat Tube in Channel Flow
Tahseen, Tahseen Ahmad
Rahman, M. M.
Ishak, M.
[J]. 6TH BSME INTERNATIONAL CONFERENCE ON THERMAL ENGINEERING, 2015, 105 : 46 - 55
[33] THE EFFECT OF ASPECT RATIO AND ROUNDED CORNERS ON THE LAMINAR FORCED-CONVECTION HEAT-TRANSFER OF A NON-NEWTONIAN FLUID IN THE ENTRANCE REGION OF A RECTANGULAR DUCT (VOL 21, PG 283, 1994
ETEMAD, SG
MUJUMDAR, AS
[J]. INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 1994, 21 (03) : 459 - 460
[34] EXPERIMENTAL INVESTIGATION OF OPPOSING MIXED CONVECTION HEAT TRANSFER IN A VERTICAL FLAT CHANNEL IN THE TRANSITION REGION. 1. ANALYSIS OF LOCAL HEAT TRANSFER
Poskas, Robertas
Sirvydas, Arunas
Kolesnikovas, Jokubas
Kilda, Raimondas
[J]. HEAT TRANSFER RESEARCH, 2013, 44 (07) : 589 - 602
[35] AN EXPERIMENTAL STUDY OF FRICTION FACTOR IN THE TRANSITION REGION FOR SINGLE PHASE FLOW IN MINI- AND MICRO-TUBES
Ghajar, Afshin. J.
Rao, Rahul P.
Cook, Wendell L.
Tang, Clement C.
[J]. PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE ON NANOCHANNELS, MICROCHANNELS, AND MINICHANNELS, PTS A AND B, 2008, : 249 - 257
[36] Pressure drop and friction factor study for an airfoil-fin printed circuit heat exchanger using experimental and numerical techniques
Arora, Ojasvin
Cosials, Kevin Fernandez
Vaghetto, Rodolfo
Hassan, Yassin A.
[J]. INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 2023, 101
[37] EXPERIMENTAL-STUDY OF HEAT-TRANSFER AND PRESSURE-DROP CHARACTERISTICS OF A FINED WALL SITUATED IN A CROSS FLOW OF AIR IN A RECTANGULAR DUCT - APPLICATION TO A SMOKE RECUPERATOR
MARTIN, MG
AMOKRANE, A
HUMBERT, M
[J]. REVUE GENERALE DE THERMIQUE, 1986, 25 (294-95): : 325 - 339
[38] EXPERIMENTAL INVESTIGATION OF OPPOSING MIXED CONVECTION HEAT TRANSFER IN A VERTICAL FLAT CHANNEL IN THE TRANSITION REGION. 2. ANALYSIS OF LOCAL HEAT TRANSFER IN THE CASE OF THE PREVAILING EFFECT OF BUOYANCY AND GENERALIZATION OF DATA
Poskas, R.
Sirvydas, A.
Bartkus, G.
[J]. HEAT TRANSFER RESEARCH, 2016, 47 (08) : 745 - 751

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