Effect of “U” Shaped and Dome Shaped Baffles on Damping for Slosh Supression

Authors

  • R. Mothilal Structural Analysis and Testing Group, Structural Engineering Entity, Vikram Sarabhai Space Centre, Trivandrum - 695 022, India
  • S. Rajendran Structural Analysis and Testing Group, Structural Engineering Entity, Vikram Sarabhai Space Centre, Trivandrum - 695 022, India
  • T. Sundararajan Structural Analysis and Testing Group, Structural Engineering Entity, Vikram Sarabhai Space Centre, Trivandrum - 695 022, India

DOI:

https://doi.org/10.51983/ajeat-2014.3.2.729

Keywords:

Propellant, slosh, baffles, U”shaped baffle, Dome shaped baffle, damping ratio

Abstract

Propellant sloshing in launch vehicles is a general problem of concern to space technologists. Sloshing can be suppressed by several techniques and one of them is by using baffles. Here, a study of some of the novel baffle configurations for the suppression of sloshing is carried out. Experiment is conducted on “U” shaped and Dome shaped baffle configurations. When compared to the Dome shaped baffle, “U” shaped baffle is giving a higher maximum value of damping ratio. In comparison to the fl at annular ring baffle, it is surprising that both the “U” shaped and Dome shaped baffles are found to yield lower value of maximum damping. This is surmised to be perhaps due to the liquid interior to the inner edge surface of baffle behaving as a liquid mass in a separate container with the baffle being unable to restrain this oscillation.

References

R. A. Ibrahim, "Liquid sloshing dynamics: Theory and applications," Cambridge University Press, 2005.

P. S. Gandhi, "Design and development of a novel 2DOF actuation slosh rig," Journal of Dynamic Systems, Measurement, and Control, vol. 131, no. 1, Jan. 2009.

K. Aoki and T. Nakamura, "Experimental investigation of baffle effectiveness on nonlinear propellant sloshing in RLV," in 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2007.

P. Pal, "Sloshing of liquid in partially filled container – An experimental study," International Journal of Recent Trends in Engineering, vol. 1, no. 6, May 2009.

S. Durvasula and S. Ashok Kumar, "Preliminary results of tests on some new baffle configurations," Report NO.1 (ISTC/AE/SDI031), Mar. 1990.

R. Mothilal et al., "Results of experiments on different Helical baffle configurations," Report NO.2 (ISTCI AE/SDI031), Sep. 1990.

D. Liu and P. Lin, "A numerical study of three-dimensional liquid sloshing in tanks," Journal of Computational Physics, vol. 227, pp. 3291–3939, 2008.

T. D. Franklin, "The new dynamic behavior of liquids in moving containers," NASA SP-106 updated version, 2000.

R. Mothilal et al., "A study on slosh due to variations of ring baffles," Indian Conference on Applied Mechanics, INCAM 2013, IIT Chennai.

S. Durvasula and J. V. Kamesh, "Experimental tests in slosh studies conducted upon the 1/10 the scale tanks of the II stage of PSLV," ISRO-IISc (STC) AE/SD/15(b) Scheme, Report No.2, 1984.

B. S. Suresh, "Sloshing model studies," M.E. dissertation project, B.M.S. College of Engineering, supervised by S. Durvasula, 1986–87.

S. Durvasula, J. V. Kamesh, B. S. Suresh, and J. Panicker, "Scaled model studies of sloshing and its suppression in propellant tanks of a launch vehicle," paper presented at National Seminar on Aerospace Structures - Advances and Future Trends (NASAS-88), Nov. 15–16, 1988, VSSC, Trivandrum.

Downloads

Published

08-07-2014

How to Cite

Mothilal, R., Rajendran, S. ., & Sundararajan, T. . (2014). Effect of “U” Shaped and Dome Shaped Baffles on Damping for Slosh Supression. Asian Journal of Engineering and Applied Technology, 3(2), 5–9. https://doi.org/10.51983/ajeat-2014.3.2.729