Experimental Investigation of Liquid Sloshing Impact Load in a Large-Scale Prismatic Tank

Abstract

Abstract:

Liquid sloshing load is one of the key issues in the design of the cargo container system of the very large-scale floating liquefied natural gas (FLNG) facility. Experimental investigation on liquid slamming in a large-scale prismatic tank under sway, surge, and roll excitations is performed, aiming at the time history of slamming pressure, the distribution of the largest impact pressure and the most serious filling rates. A series of experiments in a large-scale prismatic model is carried out. Pressure sensor array is employed to record the variation of impact pressure. The experimental results illustrate that the value between 60%~70% is the most serious filling rate. Furthermore, the position with change of curvature along the bulkhead is found to be the most serious position for tank structure. The results are useful for the research and design associated with slamming load in prismatic tank.

Key words: sloshing load, large-scale model experiment, slamming pressure, excitation, the most serious filling rate

CLC Number:

Zhi-jun WEI, Shi-lun RUAN, Qian-jin YUE, Bin XIE. Experimental Investigation of Liquid Sloshing Impact Load in a Large-Scale Prismatic Tank[J]. Ocean Engineering Equipment and Technology, 2014, 1(1): 55-61.

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References 21

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激励方式	实验载液率/%	激励振幅
横摇	10, 20, 30, 40, 50, 60, 70, 80, 90	1.5°
纵荡	10, 20, 30, 40, 50, 60, 70, 80, 90	30 mm
横荡	10, 20, 30, 40, 50, 60, 70, 80, 90	30 mm

载液率/%	0.90f_o	0.95f_o	f_o	1.05f_o	1.10f_o	1.15f_o
10	0.359	0.379	0.399	0.419	0.439	0.459
20	0.489	0.516	0.543	0.570	0.597	0.624
30	0.564	0.595	0.627	0.658	0.690	0.721
40	0.608	0.642	0.676	0.709	0.744	0.777
50	0.633	0.668	0.703	0.738	0.773	0.808
60	0.647	0.683	0.719	0.755	0.791	0.827
70	0.655	0.691	0.728	0.764	0.801	0.837
80	0.659	0.696	0.732	0.769	0.805	0.842
90	0.662	0.698	0.735	0.772	0.808	0.845

载液率/%	0.90f_o	0.95f_o	f_o	1.05f_o	1.10f_o	1.15f_o
10	0.266	0.280	0.295	0.310	0.324	0.339
20	0.366	0.387	0.407	0.428	0.448	0.448
30	0.433	0.457	0.481	0.505	0.529	0.553
40	0.479	0.505	0.532	0.558	0.585	0.612
50	0.509	0.537	0.565	0.594	0.622	0.650
60	0.529	0.559	0.588	0.617	0.647	0.676
70	0.543	0.573	0.603	0.633	0.663	0.693
80	0.552	0.582	0.613	0.643	0.674	0.704
90	0.557	0.588	0.619	0.650	0.681	0.712