Drag Reduction by Anionic Surfactant Solutions in Gravity Driven Flow System

Document Type : Research Article


1 Department of Chemical Engineering, MVGR College of Engineering, Chintalavalasa, Vizianagaram, Andhra Pradesh, INDIA

2 Department of Chemical Engineering, Andhra University, Visakhapatnam, A.P., INDIA


This paper presents efflux time experiments performed in the absence and presence of aqueous solutions of Drag Reducing Agents (DRAs) when a liquid is emptied from a large open cylindrical storage tank through an exit piping system. The drag reducing agents studied are Dodecyl benzene sulfonate anionic surfactant and a mixed solution of surfactant and sodium chloride counter ion. The variables studied are initial height of liquid in the tank, diameter of storage tank, and length of exit pipe. Drag reduction (i.e reduction in efflux time) is found be more significant in presence of mixed solutions of surfactant and its counter ion. It has also been observed that Froude umber remains constant during draining and increases upon addition of surfactant solution and also in case of mixed solutions of surfactant and its counter ion.  


Main Subjects

[1] Hart P.W., Sommerfeld J.T., Expressions for Gravity Drainage of Annular and Toroidal Containers, Process Safety Progress., 14, p. 238 (1995).
[2] Donald D.Joye,  Branden C. Barret, The Tank Draining Problem Revisited: Do These Equations Actually Work, Can.J. Chem.Eng., 81, p. 1052 (2003).
[3] Subbarao Ch.V., King P., Prasad V.S.R.K., Effect of Polymer Additives on the Dynamics of a Fluid for Once Through System, Int.J.Fluid Mech.Res., 35, p. 374 (2008).
[4] Choi K.S., Yang X., Calyton B.R., Glover E.J., Alatar M., Semenov B.N., Kulik V.M., Turbulent Drag Reduction Using Complaint Surfaces, Proc. R. Soc. Lond. 453, p. 2229 (1997).
[5] Henoch C., Krupenkin T.N., Kolonder P., Taylor J.A., Hodes M.S., Lyons A.M., Peguero C., Breuer K., Turbulent Drag Reduction Using Super Hydrophobic Surfaces, 3rd AIAA Flow Conference, San Francisco, pp1-5 (2006).
[6] L.vov V.S., Pomyalov A., Procaccia I., Tiberkevich V., Drag Reduction by Micro-Bubbles-the Limit of Minute Bubbles, Phys. Rev. lttr., 94, p. 174502-1 -174502-5 (2005).
[7] Jurban B.A., Zurigat Y.H., Al-shukri M.S., H.HAl-Busaidim H.H., The Use of Drag Reduction Agent and a Detergent for Drag Reduction in a Circulatory Vertical Flow, Polymer-Plastics Tech. Eng., 45,
p. 533 (2006).
[8] G.Agulilar G., K.Gaslijevic K., Mathys E.F., Reduction of Friction in Fluid Transport: Experimental Investigation, Revista Mexiciana De Fisca, 52, p. 444 (2006).
[9] Subbarao Ch.V., MallikarjunaRao K., King P., Bhasakara Sarma C., Prasad V.S.R.K., Drag Reduction by Polymer Additions in Once Through Systems, Int.J.Fluid Mech.Res., 37, p. 391 (2010).
[10] Reddy G.V.S.K., Subbarao Ch.V., Comparison of Efflux Times Between Cylindrical and Spherical Tanks Through An Exit Pipe, Int.J.Eng.App.Sci. (IJEAS), 3, p. 61 (2011).
[11] Subbarao Ch.V., Comparison of Efflux Time between Cylindrical and Conical Tanks Through an Exit Pipe, Int.J. Appl.Sci.Eng., 9, p. 33 (2011).
[12] Gopal Singh P.V, Subbarao Ch.V, Venkaterswarlu P., Drag Reduction by Different Solutions of Polymers in Gravity Driven Flow, Int.J.Appl.Eng.Res, Dindigul, 1, p. 899 (2011).
[13] Wang Yi., Yu B, L. Zakin J., Shi H., Review on Drag Reduction and Its Heat Transfer by Additives, Adv.Mech.Eng., p. 1 (2011)
[14] Santosh Kumar G, SubbaraoCh.V, King P, Efflux Time for Two-Exit Pipe System, Int. J. Appl. Sci. Eng., 9, p. 277 (2011).