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In order to ensure the structural dynamic stability of moving liquid-storage containers, theflow motion of interior liquid should be appropriately supresed by means of mechanical devices such asthe disc-type elastic baffle. In practice, the design of a suitable bafle requires a priori the parametricdynamic characteristics of storage containers, with respect to the design parameters of bafle, such as theinstallation location and inner-hole size, the bafle number, and so on. In this paper, we intend toinvestigate the parametric effect of the bafle parameters on the transient dynamic behavior of acylindrical fuel-storage tank in an abrupt vertical acceleration motion. For this goal, we employ the ALE(arbitrary Lagrangian-Eulerian) kinematic description method incorporated with the finite element method.