CAJ | 학술논문

采用结构化六面体网格对主压载水舱内部流场进行离散化，基于FLUENT流体计算软件，应用VOF两相流模型，对10 m及20 m水深时高压气吹除主压载水舱过程进行了数值模拟，研究了气液两相界面的形成及生长过程，深入分析了水舱排水速率的变化规律，并针对压载水的残留现象提出了实际操艇过程中需要注意的问题。仿真结果与现有文献中实体模型的实验结果吻合较好，均揭示了吹除过程中水舱内部压力及排水速率的波动现象，验证了数值模拟方法的准确性和有效性。为与实际情况相符，还提出了针对入口及出口边界条件的改进方案。
채용결구화륙면체망격대주압재수창내부류장진행리산화，기우FLUENT류체계산연건，응용VOF량상류모형，대10 m급20 m수심시고압기취제주압재수창과정진행료수치모의，연구료기액량상계면적형성급생장과정，심입분석료수창배수속솔적변화규률，병침대압재수적잔류현상제출료실제조정과정중수요주의적문제。방진결과여현유문헌중실체모형적실험결과문합교호，균게시료취제과정중수창내부압력급배수속솔적파동현상，험증료수치모의방법적준학성화유효성。위여실제정황상부，환제출료침대입구급출구변계조건적개진방안。
The inner fluid domain of the ballast tank for computing was dispersed and meshed by applying the structured hexahedral grid, and by using the VOF two-phase flow model, the process of high compressed gas blowing ballast tank while at 10 m and 20 m depth under water was numerically simulated based on computational fluid dynamics package FLUENT. The research studied the forming and developing process of the gas-water two-phase interface was studied, the draining rule of the ballast tank was analysed, and the attention issues in the process of practically steering submarine aiming at the remanet ballast water were indicated. The simulation results match the model experiment results of the existing literatures very well, and for both the results indicating the undulation phenomenon of the interior pressure of the tank and the draining velocity in the process of blowing, the veracity and validity of the numerical simulation is validat-ed. For matching the actual situation, the amelioration schemes of the inlet and outlet boundary conditions were given.