浮式生产储油轮(FPSO)长期在外海作业,其液舱晃荡现象始终存在。文章对船体外流场采用非线性势流理论,对液舱内流场采用线性势流理论,应用脉冲响应函数法,基于法国船级社(BV)的综合性水动力分析软件HOMER,计算了FPSO在考虑液舱晃荡作用下的时域运动响应,并对晃荡压强进行对比分析。结果表明,液舱晃荡对FPSO运动具有明显的影响,且该影响在横浪时的运动上更为显著,此时液舱晃荡产生的压强也更大。
During the FPSO (Floating Production Storage and Offioading) long term operations in deep-seas, the tank sloshing phenomena always exists. In the paper, the non-liner potential flow theory is applied for ship external flow field and liner potential flow theory is applied for inner tank flow field. Using impulse response functions, based on comprehensive hydro analysis software HOMER, considering tank sloshing effect, FPSO time domain motion response is calculated, and sloshing pressure is in different cases are contrasted and discussed. The result shows that tank sloshing have significant influence on FPSO motion response, and the influence is more significant to FPSO motion in beam sea. Meanwhile, the sloshing pressure is greater