考虑液舱晃荡作用下燃油加热器支座强度分析

Structure Intensity Analysis of Oil Heater Support Based on Oil Tank Sloshing

摘要: 为了分析液舱晃荡对燃油加热器支座强度的影响，求解分析了船体横摇作用下油舱内流场特性，采用VOF模型模拟液舱内的气液两相界面，利用商业软件FLUETN求解二维显式N-S方程组，时间项采用一阶格式，并考虑不同摇摆周期、振幅、油舱位置时，燃油加热器受力情况，进一步将流场结果作为加热器支座外载荷，对燃油加热器支座进行强度分析和结构优化，优化后最大应力减少34.9%。

Abstract: In order to study the oil tank sloshing effects on the structure of oil heater support, the flow field of oil tank under sloshing condition has been calculated using VOF multiphase mode. The CFD software FLUENT has been used for 2d explicit N-S equations and the first order implicit is used for time discretization scheme. The oil heart pressure under different time, amplitude and tank location has been discussed, then the flow force result is added to structure intensity analysis, and the oil heater support structure had been optimized. As a result, the maximum stress is reduced by 39.4%.