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Research Papers: Fluid-Structure Interaction

Semi-Active Sloshing Suppression Control of Liquid in Vessel With Bulkhead

[+] Author and Article Information
Nobuyuki Kobayashi

Department of Mechanical Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 229-8558, Japankobanobu@me.aoyama.ac.jp

Yusuke Koyama

Department of Mechanical Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Sagamihara, Kanagawa 229-8558, Japanu_skeeter@hotmail.co.jp

J. Pressure Vessel Technol 132(5), 051301 (Aug 25, 2010) (8 pages) doi:10.1115/1.4001194 History: Received March 12, 2009; Revised December 01, 2009; Published August 25, 2010; Online August 25, 2010

A semi-active sloshing suppression control method for the contained liquid in the closed vessel is presented. The presented method uses the air spring effect of the gas chamber on the liquid surface, when the closed vessel is divided into two separated compartments with the vertical bulkhead in it so as to allow communication between two compartments at the lower part of the vessel. When the valve that is laid on the bulkhead between the two gas chambers closes, the spring effect of the gas chamber arises. On the contrary, when the valve opens, the spring effect of the gas chamber diminishes. A switching control algorithm of the valve operation is designed to decrease the sloshing response. The effectiveness of the presented semi-active sloshing suppression control method is examined with numerical simulations and the scaled model experiment. As the result, the presented method is verified to be effective to suppress the sloshing while the consuming energy to control the valve is small.

Copyright © 2010 by American Society of Mechanical Engineers
Topics: Sloshing , Vessels , Valves
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References

Figures

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Figure 14

Sloshing response by experiment (h/Hl=0.697): (a) sloshing height without control, (b) sloshing height with control, (c) sloshing velocity with control, (d) valve switching by control, and (e) oscillated acceleration of vessel

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Figure 15

Sloshing response without deadzone by experiment (h/Hl=0.697): (a) sloshing height with control, (b) sloshing velocity with control, (c) valve switching by control, and (d) oscillated acceleration of vessel

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Figure 16

Maximum sloshing height versus oscillated acceleration

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Figure 17

Sloshing response of actual size vessel (Ha=1 m): (a) sloshing height without control, (b) sloshing height with control, (c) sloshing velocity with control, (d) valve switching by control, and (e) ground acceleration

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Figure 18

Effect of air chamber height on sloshing response: (a) sloshing height without control, (b) sloshing height with control (Ha=3 m), (c) sloshing height with control (Ha=2 m), (d) sloshing height with control (Ha=1 m), and (e) ground acceleration

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Figure 1

Sloshing damage of water vessel (5)

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Figure 2

Sloshing damage of oil storage tank (7)

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Figure 3

Sloshing mode of liquid in vessel: (a) primary sloshing mode without bulkhead, (b) U-tube mode sloshing, and (c) in-compartment mode sloshing

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Figure 4

Simplified sloshing model

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Figure 5

Present sloshing suppression method

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Figure 6

Block diagram of sloshing suppression control

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Figure 7

Sloshing response by simulation (h/Hl=0.434): (a) sloshing height without control, (b) sloshing height with control, (c) sloshing velocity with control, (d) valve switching by control, and (e) oscillated acceleration of vessel

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Figure 8

Sloshing response by simulation (h/Hl=0.697): (a) sloshing height without control, (b) sloshing height with control, (c) sloshing velocity with control, (d) valve switching by control, and (e) oscillated acceleration of vessel

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Figure 9

Sloshing response with deadzone by simulation (h/Hl=0.697): (a) sloshing height without control, (b) sloshing height with control, (c) valve switching by control, and (d) oscillated acceleration of vessel

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Figure 10

Sloshing response without LPF by simulation (h/Hl=0.697): (a) sloshing height with control, (b) sloshing velocity with control, (c) valve switching by control, and (d) oscillated acceleration of vessel

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Figure 11

Experimental setup

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Figure 12

Air cylinder and valves

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Figure 13

Sloshing response by experiment (h/Hl=0.434): (a) sloshing height without control, (b) sloshing height with control, (c) sloshing velocity with control, (d) valve switching by control, and (e) oscillated acceleration of vessel

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