Sloshing-induced slamming in a rectangular tank with centralized slat-screens with high solidity ratios was experimentally studied under nearly two-dimensional shallow-water conditions with large-amplitude harmonic lateral excitation. The main objective was to identify the solidity ratio that provides an optimal suppressing function on the free-surface elevation and slamming pressure on the vertical tank walls with a frequency domain containing the three lowest natural sloshing frequencies in a clean tank with a water depth-to-tank length ratio of h/l = 0.125 and a high forced sway amplitude. The experiments show that the optimal solidity ratio among four considered slat-screens is approximately 0.6-0.7 for the applied filling level and excitation amplitude in the examined forced frequency range. The results have potential applications in areas such as swash bulkhead design and liquefied-cargo tank design in ship and offshore engineering.
REFERENCES
1.
American Bureau of Shipping, Floating offshore liquefied gas terminals, Classification Notes, June, 2010.
2.
Det Norske Veritas, Floating liquefied gas terminals, Classification Notes No.OTG-02, March, 2011.
3.
T.
Gavory
and P. E.
De Seze
, “Sloshing in membrane LNG carriers and its consequences from a designer’s perspective
,” in Proceedings of the 19th International Offshore and Polar Engineering Conference, ISOPE, Osaka (Japan)
(The International Society of Offshore and Polar Engineers
, 2009
), Vol. 3, pp. 14–20.4.
C.
Lugni
, M.
Brocchini
, and O. M.
Faltinsen
, “Wave impact loads: The role of the flip-through
,” Phys. Fluids
18
(12
), 122101
(2006
).5.
C.
Lugni
, M.
Miozzi
, M.
Brocchini
, and O. M.
Faltinsen
, “Evolution of the air cavity during a depressurized wave impact I. The kinematic flow field
,” Phys. Fluids
22
(5
), 056101
(2010
).6.
C.
Lugni
, M.
Brocchini
, and O. M.
Faltinsen
, “Evolution of the air cavity during a depressurized wave impact. II. The dynamic field
,” Phys. Fluids
22
(5
), 056102
(2010
).7.
8.
B. C.
Abrahamsen
and O. M.
Faltinsen
, “The effect of air leakage and heat exchange on the decay of entrapped air pocket slamming oscillations
,” Phys. Fluids
23
(10
), 102107
(2011
).9.
C.
Lugni
, A.
Bardazzi
, O. M.
Faltinsen
, and G.
Graziani
, “Hydroelastic slamming response in the evolution of a flip-through event during shallow-liquid sloshing
,” Phys. Fluids
26
(3
), 032108
(2014
).10.
B.
Molin
and F.
Remy
, “Experimental and numerical study of the sloshing motion in a rectangular tank with a perforated screen
,” J. Fluids Struct.
43
, 463
(2013
).11.
M. J.
Tait
, A. A.
El Damatty
, N.
Isyumov
, and M. R.
Siddique
, “Numerical flow models to simulate tuned liquid dampers (TLD) with slat screens
,” J. Fluids Struct.
20
(8
), 1007
(2005
).12.
O. M.
Faltinsen
, R.
Firoozkoohi
, and A. N.
Timokha
, “Steady-state liquid sloshing in a rectangular tank with a slat-type screen in the middle: Quasilinear modal analysis and experiments
,” Phys. Fluids
23
(4
), 042101
(2011
).13.
O. M.
Faltinsen
, R.
Firoozkoohi
, and A. N.
Timokha
, “Analytical modeling of liquid sloshing in a two-dimensional rectangular tank with a slat screen
,” J. Eng. Math.
70
(1-3
), 93
(2011
).14.
O. M.
Faltinsen
and A. N.
Timokha
, “Natural sloshing frequencies and modes in a rectangular tank with a slat-type screen
,” J. Sound Vib.
330
(7
), 1490
(2011
).15.
O. M.
Faltinsen
, R.
Firoozkoohi
, and A. N.
Timokha
, “Effect of central slotted screen with a high solidity ratio on the secondary resonance phenomenon for liquid sloshing in a rectangular tank
,” Phys. Fluids
23
(6
), 062106
(2011
).16.
R.
Firoozkoohi
, “Experimental, numerical and analytical investigation of the effect of screens on sloshing
,” Ph.D thesis (NTNU
, 2013
).17.
R.
Firoozkoohi
and O. M.
Faltinsen
, “Experimental and numerical analysis of two-dimensional steady state sloshing in a rectangular tank equipped with a slatted screen
,” in Proceedings of the 11st International Conference on Hydrodynamics, ICHD, Singapore (2014)
, edited byT. S.
Keat
, W.
Xikun
, G. W.
Min
, and J.
Chua
(ICHD
, 2014
), ISBN 978-981-09-2175-0.18.
Det Norske Veritas, Sloshing analysis of LNG membrane tanks, Classification Notes No.30.9, June, 2006.
19.
M.
Graczyk
and T.
Moan
, “A probabilistic assessment of design sloshing pressure time histories in LNG tanks
,” Ocean Eng.
35
(8
), 834
(2008
).20.
G.
Bulian
, E.
Botia-Vera
, and A.
Souto-Iglesias
, “Experimental sloshing pressure impacts in ensemble domain: Transient and stationary statistical characteristics
,” Phys. Fluids
26
(3
), 032102
(2014
).21.
D. H.
Peregrine
, “Water-wave impact on walls
,” Annu. Rev. Fluid Mech.
35
(1
), 23
(2003
).22.
T.
Loysel
, S.
Chollet
, E.
Gervaise
, L.
Brosset
, and P. E.
De Seze
, “Results of the first sloshing model test benchmark
,” in Proceedings of the 22nd International Offshore and Polar Engineering Conference, ISOPE, Rhodes (Greece)
(The International Society of Offshore and Polar Engineers
, 2012
), Vol. 3
, pp. 398
–408
.23.
H.
Olsen
and K. R.
Johnsen
, “Nonlinear sloshing in rectangular tanks. A pilot study on the applicability of analytical models
,” Det Norske Veritas Report No. 74-72-S, 2
, 1975
.24.
B.
Bouscasse
, M.
Antuono
, A.
Colagrossi
, and C.
Lugni
, “Numerical and experimental investigation of nonlinear shallow water sloshing
,” Int. J. Nonlinear Sci. Numer. Simul.
14
(2
), 123
(2013
).25.
J. H. G.
Verhagen
and L.
Van Wijngaarden
, “Non-linear oscillations of fluid in container
,” J. Fluid Mech.
22
(04
), 737
(1965
).26.
H.
Bredmose
, M.
Brocchini
, D. H.
Peregrine
, and L.
Thais
, “Experimental investigation and numerical modeling of steep forced water waves
,” J. Fluid Mech.
490
, 217
(2003
).27.
M. E.
Topliss
, M. J.
Cooker
, and D. H.
Peregrine
, “Pressure oscillations during wave impact on vertical walls
,” in Proceedings of the 23rd International Conference on Coastal Engineering, ASCE, Venice, 1992
, edited by B. L.
Edge
(ASCE
, New York
, 1993
), Vol. 2
, pp. 1639
–1650
, ISBN 978-0-87262-933-2/0-87262-933-3.28.
H. N.
Abramson
, R. L.
Bass
, O. M.
Faltinsen
, and H. A.
Olsen
, “Liquid slosh in LNG carriers
,” in Proceedings of the 10th Symposium on Naval Hydrodynamics, Cambridge, Massachusetts
(US Government Printing Office
, Washington, DC
, 1974
), pp. 371
–388
, Order Number: BSRA No 44,838.© 2015 AIP Publishing LLC.
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