Vortex Formation during Draining from Cylindrical Tanks: Effect of Drain Port Eccentricity
Publication: Journal of Aerospace Engineering
Volume 30, Issue 5
Abstract
This paper reports an experimental study on the combined effect of drain port eccentricity and port diameter on air core vortex formation in a cylindrical tank with a rotating liquid column. The study is motivated by the need to control air core vortex formation in applications like propellant feed systems of rocket engines. Based on a series of experiments in a water tank with varying discharge port diameter and port eccentricity values, the study shows how the vortex formation can be suppressed using an appropriate combination of diameter and eccentricity of the discharge port. Experiments are carried out over a range of values of initial speed of rotation (60–200 rpm) of the water column. The height of the water column at which the air core vortex extends to the discharge port, is used as a measure of the vortex growth rate. The study proposes a correlation between the critical port diameter (which suppresses vortex formation) and port eccentricity. The intermittency of vortex formation in the eccentric port configuration is also studied using flow visualization.
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References
Abramson, H. N., Chu, W. H., Garza, L. R., and Ransleben, G. E. (1962). “Some studies of liquid rotation and vortexing in rocket propellant tanks.”, NASA, Washington, DC.
Ajith Kumar, R., Josy, J., Shaji, R. K., and Srikrishnan, A. R. (2016). “Vortex suppression through drain port sizing.” J. Aerosp. Eng., .
Basu, P., Agarwal, D., Tharakan, T. J., and Salih, A. (2013). “Numerical studies on air-core vortex formation during draining of liquids from tanks.” Int. J. Fluid Mech. Res., 40(1), 27–41.
Daily, J. W., and Harleman, D. R. F. (1996). Fluid dynamics, Addison-Wesley, Univ. of Michigan, Ann Arbor, MI.
Gowda, B. H. L. (1996). “Draining of liquids from tanks of square or rectangular cross sections.” J. Spacecraft Rockets, 33(2), 311–312.
Gowda, B. H. L., Joshy, P. J., and Swarnamani, S. (1996). “Devices to suppress vortexing during draining from cylindrical tanks.” J. Spacecraft Rockets, 33(4), 598–600.
Lubin, B. T., and Springer, G. S. (1967). “The formation of a dip on the surface of a liquid draining from a tank.” J. Fluid Mech., 29(2), 385–390.
Piva, M., Iglesias, M., Bissio, P., and Calvo, A. (2003). “Experiments on vortex funnel formation during drainage.” Physica A, 329(1), 1–6.
Ramamurthi, K., and Tharakan, T. J. (1993). “Shaped discharge ports for draining liquids.” J. Spacecraft Rockets, 30(6), 786–788.
Sakai, T., Eguchi, Y., Monji, H., Ito, K., and Ohsima, H. (2008). “Proposal of design criteria for gas entrainment from vortex dimples based on a computational fluid dynamics method.” Heat Transfer Eng., 29(8), 731–739.
Singh, P. K. (2004). “Scale model experiments and numerical study on a steel teeming process.” Master thesis, Univ. of Kentucky, Lexington, KY.
Sohn, C. H., Gowda, B. H. L., and Ju, M. G. (2008). “Eccentric drain port to prevent vortexing during draining from cylindrical tanks.” J. Spacecraft Rockets, 45(3), 638–640.
Sohn, C. H., Ju, M. G., and Gowda, B. H. L. (2009). “Draining from cylindrical tanks with vane-type suppressors—A PIV Study.” J. Visualisation, 12(4), 347–360.
Sun, H., and Liu, Y. (2015). “Theoretical and experimental study on the vortex at hydraulic intakes.” J. Hydraul. Res., 53(6), 787–796.
Information & Authors
Information
Published In
Journal of Aerospace Engineering
Volume 30 • Issue 5 • September 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Jun 10, 2016
Accepted: Dec 29, 2016
Published online: Apr 13, 2017
Published in print: Sep 1, 2017
Discussion open until: Sep 13, 2017
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