Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Print: 2152-5102
ISSN Online: 2152-5110

Volumes:
Volume 47, 2020 Volume 46, 2019 Volume 45, 2018 Volume 44, 2017 Volume 43, 2016 Volume 42, 2015 Volume 41, 2014 Volume 40, 2013 Volume 39, 2012 Volume 38, 2011 Volume 37, 2010 Volume 36, 2009 Volume 35, 2008 Volume 34, 2007 Volume 33, 2006 Volume 32, 2005 Volume 31, 2004 Volume 30, 2003 Volume 29, 2002 Volume 28, 2001 Volume 27, 2000 Volume 26, 1999 Volume 25, 1998 Volume 24, 1997 Volume 23, 1996 Volume 22, 1995

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v40.i3.30
pages 227-234

Use of Surfactant Solutions for Drag Reduction in Gravity Driven Flow Systems

Ch. V. Subbarao
Department of Chemical Engineering, MVGR College of Engineering
Divya
Department of Chemical Engineering, Andhra University, Visakhapatnam, A. P., India
D. Appala Naidu
Department of Chemical Engineering, Andhra University, Visakhapatnam, A. P., India
P. King
Environmental Pollution Control Engineering Laboratory, Department of Chemical Engineering, AU College of Engineering, Andhra University, Visakhapatnam, Andhra Pradesh

ABSTRACT

Experiments on efflux time are performed in the presence and absence of drag reducing agent for computing drag reduction in gravity driven flow systems. The system consists of a large cylindrical tank connected by an exit pipe located at the centre of the bottom of the tank. The drag reducing agent used is Dodecyl Benzene Sulfonate anionic surfactant. The variables studied are diameter of the storage tank, initial height of liquid in the tank, length of the exit pipe, concentration of surfactant. Optimum concentration of surfactant is found to be independent of the diameter and initial height of liquid in the tank as well as the length of the exit pipe. However, it is observed that drag reduction at optimum concentration (maximum drag reduction) is influenced by diameter of storage tank, initial height of liquid in the tank as well as the length of the exit pipe.