Secondary Flow Characteristics in Helical Rectangular Channel

doi:10.7652/xjtuxb201408021

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Secondary Flow Characteristics in Helical Rectangular Channel

更新时间：2025-07-09

- Secondary Flow Characteristics in Helical Rectangular Channel
- Vol. 48, Issue 8, Pages: 122-127(2014)
- 作者机构：
  
  开封空分集团有限公司,河南,开封,475002
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201408021
  CLC： TQ0211
- Online First：10 August 2014，
  
  Published：2014
- 稿件说明：
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Secondary Flow Characteristics in Helical Rectangular Channel[J]. 2014, 48(8): 122-127.
DOI：

Secondary Flow Characteristics in Helical Rectangular Channel[J]. 2014, 48(8): 122-127. DOI： 10.7652/xjtuxb201408021.

摘要

为了揭示螺旋通道横截面全流场信息

利用二维粒子图像测速仪(PIV)对高宽比为5:7的矩形截面螺旋通道第二个螺距内的5个横截面流场进行了实验测量

获得了不同雷诺数下、不同横截面的二次流瞬态流场以及涡量场图像。实验结果表明:靠近螺旋通道外壁面下角处存在低速区

并产生了一个顺时针方向的旋涡

而螺旋通道内壁上角处同样存在低速区并产生了一个旋转方向相反的小旋涡

内壁上角和外壁下角的正负涡量绝对值较大; 随着螺旋角的上升

横截面的二次流高速区速度分布由内侧逐步向外侧移动

使得外侧速度增加

其截面中心处二次流方向是自下向上流动; 流体旋转一圈半后

螺旋流动达到稳定状态。此研究结果可为螺旋通道的强化换热设计提供一定的参考。

Abstract

The flow fields of 5 cross-sections for the second pitch in a helical rectangular channel with height/width ratio of 5/7 are investigated by two-dimensional particle image velocimetry(PIV)

and the secondary flow field and vorticity field for different cross-section are analyzed under different Reynolds numbers. The transient flow characteristics of the channel cross-section are revealed. A low-speed zone exists and a large clockwise vortex is obviously observed at the lower corner of the outer wall near the helical rectangular cross-section

while a low-speed zone also exists and a small counterclockwise vortex is observed at the upper corner of the inner wall. The absolute value of both positive and negative vorticity becomes larger at the upper-corner of the inner wall surface and the lower-corner of outer wall surface. The fluid higher velocity zone gradually moves from the inner to outer region of the helical channel with the increasing helical angle. Moreover

the secondary flow at the cross-section center transmits from the bottom wall to upper wall

and the helical flow tends to be steady after one and a half spiral circles. The results provide reference for enhanced heat transfer design of helical channel.

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references

YU B, ZHENG B, LIN C X, et al. Laser Doppler anemometry measurements of laminar flow in helical pipes[J]. Experimental Thermal and Fluid Science, 2003, 27: 860-865.

YANG G, DONG Z F, EBADIAN M A. Laminar forced convection in a helicoidal pipe with finite pitch[J]. Int J Heat Mass Transfer, 1995, 38(5): 853-862.

XIN R C, AWWAD A, DONG Z F, et al. An experi-mental study of single-phase and two-phase flow pressure drop in annular helicoidal pipes[J]. Int J Heat and Fluid Flow, 1997, 18(5): 482-488.

LIN C X, EBADIAN M A. The effects of inlet turbulence on the development of fluid flow and heat transfer in a helically coiled pipe[J]. Int J Heat Mass Transfer, 1999, 42(4): 739-751.

张金锁, 章本照. 环形截面螺旋管道内二次流动特性的研究[J]. 力学学报, 2001, 33(2): 183-194.

ZHANG Jinsuo, ZHANG Benzhao. The research on the characteristics of the secondary flow in a helical annular pipe[J]. Acta Mechanica Sinica, 2001, 33(2): 183-194.

PIZZA I D, CIOFALO M. Numerical prediction of turbulent flow and heat transfer in helical coiled pipes[J]. Int J Thermal Sciences, 2010, 49: 653-663.

MOAWED M. Experimental study of forced convection from helical coiled tubes with different parameters[J]. Energy Conversion and Management, 2011, 52(2): 1150-1156

付衍琛, 邓宏武, 吕品, 等. 螺旋管内超临界航空煤油流动阻力特性[J]. 航空动力学报, 2013, 28(3): 688-694.

FU Yanchen, DENG Hongwu, LÜ Pin, et al. Flow resistance characteristics of supercritical aviation kerosenein helix tube[J]. J Aerospace Power, 2013, 28(3): 688-694.

章本照, 马寨璞, 苏霄燕, 等. 圆截面螺旋管道内非定常流动研究[J]. 应用数学和力学, 2003, 24(5): 519-528.

ZHANG Benzhao, MA Zaipu, SU Xiaoyan, et al. A study on the unsteady flow in helical pipe[J]. Applied Mathematics and Mechanics, 2003, 24(5): 519-528.

章本照, 张金锁, 常华章, 等. 椭圆形截面螺旋管道内二次流动的摄动解[J]. 空气动力学报, 2000, 18(4): 448-455.

ZHANG Benzhao, ZHANG Jinsuo, CHANG Huazhang, et al. Perturbation solution of secondary flow in helical elliptical pipe[J]. Acta Aerodynamica Sinica, 2000,18(4): 448-455.

KO T H, KING T. Entropy generation and thermody-namic optimization of fully developed laminar convection in a helical coil[J]. Int Com Heat Mass Transfer, 2005, 32(1/2): 214-223.

KO T H. Thermodynamic analysis of optimal mass flow rate for fully developed laminar convection in a helical coiled tube based on mininal entropy generation principle[J]. Energy Conversion and Management, 2006, 47(18/19): 3094-3104.

BOLINDER C J, SUNDEN B. Flow visualization and LDV measurements of laminar flow in a helical square duct with finite pitch[J]. Experimental Thermal and Fluid Science, 1995, 11: 348-363.

BOLINDER C J, SUNDEN B. Numerical prediction of laminar flow and forced convective heat transfer in a helical square duct with a finite pitch[J]. Int J Heat Mass Transfer, 1996, 39(15): 3101-3115.

张丽, 邢彦伟, 吴剑华. 矩形截面螺旋通道内流体的流动特性[J]. 化工学报, 2010, 61(5): 1089-1096.

ZHANG Li, XING Yanwei, WU Jianhua. Flow characteristics in helical duct with rectangular cross section[J]. J Chemical Industry and Engineering, 2010, 61(5): 1089-1096.

EASON R M, BAYAZITOGLU Y, MIADE A. Enhancement of heat transfer in square helical ducts[J]. Int J Heat Mass Transfer, 1994, 37(14): 2077-2087.

CHEN H J, ZHANG B Z, ZHANG J S. Fluid flow in rotating helical squared ducts[J]. J Hydrodynamics: B, 2003, 15(3): 49-56.

邢云绯, 仲峰泉, 张新宇. 矩形横截面螺旋管湍流流动与传热特性的数值研究[J]. 航空学报, 2013, 34(6): 1269-1276.

XING Yunfei, ZHONG Fengquan, ZHANG Xinyu. Numerical prediction of turbulent flow and heat transfer characteristics in helical rectangular ducts[J]. Acta Aeronautica et Astronautica Sinica, 2013, 34(6): 1269-1276.

HOUT R V, GULITSKI A, BARNEA D, et al. Experimental investigation of the velocity field induced by a Taylor bubble rising in stagnant water[J]. Int J of Multiphase Flow, 2002, 28(4): 579-596.

WERELEY S T, LUEPTOW R M. Velocity field for Taylor-Couette flow with an axial flow[J]. Phys Fluids, 1999, 11(12): 3637-3649.

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