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

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

Author : R. Mothilal, S. Rajendran and T. Sundararajan
Volume 3 No.2 July-December 2014 pp 5-9.

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.

Keywords

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

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