Abstract
In order to investigate the behavior of air-water two-phase flow in a horizontal pipe, some series of experiments were performed to measure the velocity distribution in a horizontal pipe with PTV technique and the passing length and occurrence frequency of the air flow were analyzed based on the local measured velocity and electrical conductivity. A correlation between the velocity structure and the vertical distribution of air in the pipe was observed. On the basis of passing length and occurrence frequency, the flows were classified into bubble, plug, and elongated bubble in terms of bubble length to gain an understanding of flow patterns. From the results, it is possible to provide a guideline for predicting and controlling two-phase flow behavior in a large depth tunnel by investigating the characteristics of air-water flow in a horizontal pipe.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Baker, O. (1953). “Design of pipelines for simultaneous Flow of oil and gas.” Proc., Fall Meeting of the Petroleum Branch of AIME., Society of Petroleum Engineers, Dallas, Texas, pp. 1–16, DOI: 10.2118/323-G.
Brennen, C. E. (2005). Fundamentals of multiphase flow, Cambridge university press, pp. 163–169.
Cho, H., Lee, K., and Lyu, S. (2017). “An experimental investigation on the behavior of water-air two-phase flows in a horizontal pipe.” Journal of the Korean Society of Safety, Vol. 32, No. 1, pp. 75–81, DOI: 10.14346/JKOSOS.2017.32.1.75.
Kimura, K., Tanaka, H., Shibasaki, S., and Kimura, H. (2009). “Introduction of the metropolitan area outer underground discharge channel.” Journal of The Institute of Electrical Engineers of Japan, Vol. 129 No. 4, pp. 200–203, DOI: 10.1541/ieejjournal.129.200.
Kwon, S., Kim, J., and Chung, G. (2015). “Proposal of design criteria on multi-functional tunnel for the urban traffic tunnel to flooding bypass.” Journal of the Korea Academia-Industrial Cooperation Society Vol. 16, No. 5, pp. 3518–3524, DOI: 10.5762/KAIS.2015.16.5.3518.
Morris, H. M. and Wiggert, J. M. (1972). Applied hydraulics in engineering, Ronald Press, New York.
Raffel, M., Willert, C. E., Wereley, S., and Kompenhans, J. (2013). Particle image velocimetry: A practical guide, Springer, pp. 13–50.
Schlichting, H. (1968). Boundary-layer theory, McGraw-Hill, New York.
Taitel, Y. and Dukler, A. E. (1976). “A model for predicting flow regime transitions in horizontal and near horizontal gas-liquid flow.” AIChE Journal, Vol. 22, No. 1, pp. 47–55, DOI: 10.1002/aic.690220105.
Wallis, G. B. (1969). One-dimensional two-phase flow, McGraw-Hill, New York, N.Y., pp. 288–302.
Weisman, J. (1983). “Two-phase flow patterns.” Handbook of fluids in motion, N.P. Cheremisinoff, and R. Gupta (Eds.), Ann Arbor Science Publishers, Ann Arbor MI, pp. 409–425.
Wooding, R. A., Bradley, E. F., and Marshall, J. K. (1973). “Drag due to regular arrays of roughness elements of varying geometry.” Boundary-Layer Meteorology, Vol. 5, No. 3, pp. 285–308, DOI: 10.1007/BF00155238.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Lee, K., Cho, H., Rhee, D.S. et al. Experimental Investigation on the Velocity Structure and its Effect on the Flow Patterns of Air-Water Two-phase Flow in a Horizontal Pipe. KSCE J Civ Eng 22, 3363–3372 (2018). https://doi.org/10.1007/s12205-018-1037-z
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12205-018-1037-z