某船用水箱内流场分析及箱体结构优化

以某船用系统用水箱及其内流体为研究对象,利用Flow-3D软件,采用VOF算法和RNG模型进行不同海况下的建模分析,通过优化设计水箱内隔板布置和开孔情况,有效降低船体动态摇摆对水箱内流体液位波动的影响。分析得到6级海况下最低液位满足要求时,对应水箱内的初始静态液位高度应不低于900 mm。然后,利用Abaqus软件并结合9级海况下的水箱壁面压力分布情况,对水箱进行结构优化和强度校核,得出水箱设计壁厚应大于12 mm的结论。研究结果可以为装船水箱设计提供参考依据。

The Study Of A Marine Tank

This article takes a certain Marine system with water tank and its internal fluid as the research object, firstly the model is analyzed by FLOW-3D software with VOF algorithm and RNG model under different sea conditions, by optimizing the layout and opening of the baffle inside the tank, so as to effectively reduce the influence of the hull dynamic swing on the fluid level fluctuation in the water tank. Then get a result that when the lowest level under the six sea conditions to meet the requirements, the corresponding tank initial static level should not be less than 900mm. Then, using ABAQUS software and the pressure distribution on the surface of the water tank under the nine-level sea condition, the structural optimization and strength check of the water tank are carried out, then gets the conclusion is that the designed wall thickness of the water tank should be larger than 12mm, which provides reference for tank design.