NUMERICAL STUDY OF FRICTION FACTOR AND HEAT TRANSFER CHARACTERISTICS FOR SINGLE-PHASE TURBULENT FLOW IN TUBES WITH HELICAL MICRO-FINS

被引：8
|
作者：
Jasinski, Piotr [1 ]
机构：
[1] Tech Univ Lodz, Inst Turbomachinery, Div Heat Technol & Refrigerat, 219-223 Wolczanska St, PL-90924 Lodz, Poland
来源：
ARCHIVE OF MECHANICAL ENGINEERING | 2012年 / 59卷 / 04期
关键词：
numerical simulation; heat transfer; friction factor; helical micro-fins; micro-ribs;
D O I：
10.2478/v10180-012-0025-y
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The paper presents a numerical study on the heat transfer and pressure drop, related to flow in pipes with helical micro-fins. For all tested geometries, one applied a constant wall heat flux and fully developed 3D turbulent flow conditions. The influence of the angle of micro fins (referred to the tube axis) on thermal-flow characteristics were tested. The value of this angle was varied -with a step of 10 degrees - from 0 to 90 degrees (representing grooves parallel and perpendicular to the axis, respectively). Before numerical investigation, the pipe with helical angle of 30 degree was tested on an experimental stand. The results obtained from experiment and numerical simulations were compared and presented on the charts. As an effect of the numerical simulations, the friction factor f and Nusselt number characteristics was determined for the range of Re= 10(4) divided by 1.6 x 10(6). The analysis of the results showed high, irregular influence of the helical angle on thermal characteristics and pressure drops. Additionally, the ratios: f/fplain, Nu/Nu(plain) and efficiency indexes (Nu/Nu(plain))/(f/f(plain)) as a function of the Reynolds number for every helical angle were shown on the charts.
引用
收藏
页码：469 / 485
页数：17
相关论文
共 50 条
  • [1] Single-phase heat transfer and flow characteristics of micro-fin tubes
    Han, DH
    Lee, KJ
    [J]. APPLIED THERMAL ENGINEERING, 2005, 25 (11-12) : 1657 - 1669
  • [2] Single-phase pressure drop and heat transfer characteristics of turbulent liquid nitrogen flow in micro-tubes
    Qi, S. L.
    Zhang, P.
    Wang, R. Z.
    Xu, L. X.
    [J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2007, 50 (9-10) : 1993 - 2001
  • [3] Numerical Investigation of Thermo-Flow Characteristics of Tubes with Transverse Micro-Fins
    Jasinski, Piotr Boguslaw
    [J]. ENERGIES, 2024, 17 (03)
  • [4] Single-phase heat transfer prediction in helical coiled tubes in turbulent regime
    Fazzaria, R. J.
    Marcel, C. P.
    Massonb, V. P.
    [J]. NUCLEAR ENGINEERING AND DESIGN, 2024, 417
  • [5] Single phase laminar fluid flow and heat transfer in microchannel with cylindrical and parallelepiped micro-fins
    Gorasiya, Anil
    Saha, Sandip K.
    [J]. HEAT AND MASS TRANSFER, 2019, 55 (03) : 613 - 626
  • [6] Single phase laminar fluid flow and heat transfer in microchannel with cylindrical and parallelepiped micro-fins
    Anil Gorasiya
    Sandip K. Saha
    [J]. Heat and Mass Transfer, 2019, 55 : 613 - 626
  • [7] Heat transfer enhancement of single-phase turbulent flow inside tubes
    Yang, D
    Chen, TK
    Li, B
    [J]. CRYOGENICS AND REFRIGERATION - PROCEEDINGS OF ICCR'2003, 2003, : 548 - 552
  • [8] Numerical study of the effect of helical fuel rod geometry on single-phase flow and heat transfer characteristics
    Fu, Junsen
    Li, Junlong
    Wang, Ziming
    Cong, Tenglong
    Guo, Hui
    Xiao, Yao
    Gu, Hanyang
    [J]. ANNALS OF NUCLEAR ENERGY, 2024, 205
  • [9] Numerical investigation of heat transfer and friction characteristics for turbulent flow in various corrugated tubes
    Kaood, A.
    Abou-Deif, T.
    Eltahan, H.
    Yehia, M. A.
    Khalil, E. E.
    [J]. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY, 2019, 233 (04) : 457 - 475
  • [10] Enhancement mechanisms for single-phase turbulent heat transfer in micro-fin tubes
    Li Xiao-Wei
    Meng Ji-An
    Li Zhi-Xin
    [J]. JOURNAL OF ENHANCED HEAT TRANSFER, 2008, 15 (03) : 227 - 242
12345