Absract
The study of swirl flow is of technical and scientific interest because it has an internal recirculation field, and its tangential velocity is related to the curvature of the streamline. The fluid flow for tubes and elbows of heat exchangers has been studied largely through experiments and numerical methods, but studies about swirl flow have been insufficient. Using the Particle Image Velocimetry method, this study found the time averaged velocity distribution, time averaged turbulence intensity with swirl and without swirl flow for Re=10,000, 15,000, 20,000 and 25,000 along longitudinal sections, and the results appear to be physically reasonable. In addition, streamwise mean velocity distribution was compared with those of Khodadai et al. and Jeong et al.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Binnie, A. M., Experimental on the Swirling Flow of Water in a Vertical Pipe and a Bend, Proc. Roy. Soc. A, 270–10 (1962), 452–465.
Chang, T. H. and Kim, H. Y., An Investigation of Swirling Flow in a Cylindrical Tube, KSME Int. J., 15-12 (2001), 1892–1899.
Dean, W., The Streamline Motion of Fluid in a Curved Pipe, Philos Mag, 30 (1928), 673–693.
Eustice, I., Flow of Water in Curved Pipe, Proc. K. Sdc. London Ser. A, 85-1911 (1876), 5–9.
Hojo, K. and Takashima, H., Detection of Erroneous Velocity Vectors Obtained in PIV, J. of Visualization Society of Japan, 15-2 (1995), 177.
Ito, H., Friction Factors for Turbulent Flow in Curved Pipes, J. of Basic Engineering, (1959), 123–134.
Khodadadi, J. M. and Vlachos, N. S., Computation of Confined Swirling Flows: Effects of Boundary Conditions and Turbulence Model, Numerical Method in Laminar and Turbulent Flow, (1987), 458–469.
Jeong, S. J., Kim, T. H. and Cho, J. H., Numerical Computations of Turbulent Flow in a 180°Curved Duct Using a Modified Extended k-Turbulence Model, J. of KSAE, 4-3 (1996), 139–146.
Lee, S. B., Kwon, K. R. and Chang, T. H., A Study on the Heat Transfer Characteristics of Swirling Flow in a Circular Sectioned Bend with Uniform Heat Flux, J. of KSME(B), 21-5 (1997), 615–627.
Maeng, J. S., Lyu, M. S., Yang, S. Y. and Jang, Y. J., Experimental Study of Three Dimensional Turbulent Flow in a 90° Rectangular Cross Sectional Strongly Curved Duct, J. of KSME, 15-1 (1991), 262–273.
Medwell, J. O., Chang, T. H. and Kwon, S. S., A Study of Swirling Flow in a Cylindrical Tube, Korean J. of Air-Conditioning and Refrigeration Engineering, 1 (1989), 265–274.
Moon, C., Lee, G. H. and Choi, Y. D., A Experimental Study on Forced Convective Heat Transfer in a Rectangular Duct with a 180° Bend, J. of KSME, 16-2 (1991), 290–301.
Mori, Y., Uchida, Y. and Ukon, T., Forced Convection Heat Transfer in a Curved Channel with a Square Cross Section, Int. J. of Heat Transfer, 14 (1971), 1787–1805.
Murakami, M., Kito, O., Katayama, Y. and Iida, Y., An Experimental Study of Swirling Flow in Pipes, Bulletin of JSME, 19-128 (1976), 118–126.
Rowe, M., Measurements and Computations of Flow in Pipe Bends, J. Fluid Mech., 43-4 (1970), 771–783.
Said Dini, Nader Saniei and Daniel Bartlett, Use of Liquid Crystal for Local Heat Transfer Coefficient Measurement around a 180 Degree Bend, HTD-Vol. 210, Fundamentals of Convection Heat Transfer ASME, (1992). Shimizu Yukimaru and Sugino Koichi, Hydraulic Flow Patterns of Swirling Flow in U-Bends, Bulletin E., 23-183 (1980), 1443–1449.
Sparrow, E. M. and Chrysler, G. M., Turbulent Flow and Heat Transfer in Bends of Circular Cross Section: 1-Heat Transfer Experimental, J. of Heat Transfer, 108 (1986), 40–47.
Thomson, J., On the Origin of Winding of River in Alluvial Planic, with Remarks on the Flow of Water Round Bend in Pipe, Proc. K. Sdc. London Ser., 25 (1876), 5–9.
Author information
Authors and Affiliations
Additional information
Tae-Hyun Chang: He was educated at Dong-A University(B.E, 1969, M.E. 1971) in Korea. After obtaining his B.E. he was worked at Busan Thermal Power Plant(Korea Electric Company) for 10 years as a mechanical engineer. He obtained his Ph.D. at the department of mechanical engineering of the University of Wales(Swansea, UK) in 1991. He has been working for Kyungnam University since 1978 at the division of mechanical and automation engineering. He was promoted to a professor and appointed the dean of evening school for two years in 1998. He worked as a chairman of ASV’6 at Korea on May 28 - 31 2001. His major research fields are convection heat transfer with and without swirl in a tube. He has published five text books and more than 90 research papers.
Hae Soo Lee: He received his B.S. degree in Mechanical Engineering from Kyungnam University in 2000 and M.S. degree from the same Institute 2002. His research interest is fluid dynamics using particle image velocimetry.
Rights and permissions
About this article
Cite this article
Chang, T.H., Lee, H.S. An experimental study on swirling flow in a 90 degree circular tube by using particle image velocimetry. J Vis 6, 343–352 (2003). https://doi.org/10.1007/BF03181741
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF03181741