Abstract
Experiments are performed on swirling water flow in a vertical circular tube. This kind of flow is used in heat exchangers, combustion chambers, thermal power plants, and other mechanical equipment to move slurries or to convey materials. However, limited information on swirling flow in vertical circular tubes is available. In this paper, three-dimensional particle image velocimetry technique has been employed to measure velocities profiles in water along the vertical circular tube and then compared those of without swirl.
Graphical Abstract
Similar content being viewed by others
Abbreviations
- D :
-
Diameter of the swirl chamber (mm)
- L :
-
Length of the test tube(mm)
- R :
-
Radial position of the test tube (mm)
- Re :
-
Reynolds number based on the diameter of the tube and the time mean velocity in the tube
- (X, Y, Z):
-
Cartesian coordinate
- V n :
-
Non-dimensional velocity
- V z :
-
Time-averaged velocity for Z-direction (m/s)
- d :
-
Diameter of the test tube (mm)
- L :
-
Axial distance of the swirl chamber (mm)
- R :
-
Radius of the test tube (mm)
- Z :
-
Coordinate along the length of the test tube
- V r :
-
Time-averaged velocity for r-direction (m/s)
- u’,v’,w’:
-
Axial, radial, tangential fluctuating velocity
- S :
-
Swirl number \( \left( { = 1/R\left[ {\int_{0}^{r} {V_{\theta } V_{z} r^{2} {\text{d}}r} /\int_{0}^{r} {V_{z}^{2} r{\text{d}}r} } \right]} \right) \)
References
Binne AM (1962) Experiments on the swirling flow of water in a vertical pipe and a bend. Proc Roy Soc A, Mathematic Physic Engin Sci 270(1343):452–466
Binnie AM, Teare JD (1957) Experiments on the flow of swirling water through a pressure nozzle and open trumpet. Quart J Mech Appl Math X(Part 3):78–89
Chang T-H, Kim H-Y (2001) An investigation of swirling flow in a cylindrical tube. KSME Int J 15(12):1892–1899
Chang SW, Yang TL (2009) Forced convective flow and heat transfer of upward concurrent air-water slug flow in vertical plain and swirl tubes. Exp Therm Fluid Sci 33(7):1087–1099
Cho GR, Kawahashi M, Hirahara H, Kitadume M (2005) Application of stereoscopic particle image velocimetry to experimental analysis of flow through multiblade Fan. JSME Int J Ser B 48(1):25–33
Doh DH, Hwang TG, Saga T (2004) 3D-PTV measurements of the wake of a sphere. Meas Sci Technol 15:1059–1066
Huang H, Dabiri D, Gharib M (1997) On errors of digital particle image velocimetry. Meas Sci Technol 8:1427–1440
Mak H, Balahani S (2007) Near field characteristics of swirling flow past a sudden expansion. Chem Eng Sci 62:6726–6746
Nuttall JB (1953) Axial flow in a vortex. Nature 172(4378):582–583
Soloff SM, Adrian RJ, Liu ZC (1997) Distortion compensation for generalized stereoscopic particle image velocimetry. Meas Sci Technol 8(12):1441–1453
Utami T, Balckwelder RE, Ueno T (1991) A cross-correlation technique for velocity field extraction from particulate visualization. Exp Fluids 10:213–223
Wood RJK, Jones TF, Miles NJ, Ganeshalingam J (2001) Upstream swirl-induction for reduction of erosion damage from slurries in pipeline bends. Wear 250:770–778
Acknowledgments
This study was supported financially by the Ministry of Education, Science, and Technology along with the Korean Institute of Science and Technology Information as a result of the RESEAT Program. It was also supported by the National Research Foundation Grant funded by the Korean Government (MEST) (No. 2008-0060153).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Chang, TH., Doh, D.H. & Oh, K.J. Velocity profiles with swirling flow in a vertical circular tube. J Vis 16, 53–64 (2013). https://doi.org/10.1007/s12650-012-0145-y
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12650-012-0145-y