摘要:
本文以航天推进装置超低温推进剂在真实工况为背景，对最为关键的微小液滴飞溅现象展开研究，利用ADINA-F的VOF方法研究了该类问题，并证明了其对于模拟液体强非线性现象具有较高的可靠性。推导了以表面张力为主导恢复力的自由液面的临界激励频率，揭示了该类液面在低频和高频参数激励下的强非线性特征与激励频率和幅值的关系，并阐述了液体黏性对于强非线性现象的抑制效应。
The study of the most important droplet-ejecting was given based on the phenomena of sub-cooled fuel of spacecraft propelling machinery during powered flight using VOF method of ADINA-F, which is verified to be taking high reliability to simulate the phenomenon of liquid strong nonlinear sloshing. The critical excitant frequency of free surface is deduced, whose dominant restoring energy from ejection is surface tension. Then the relationship between strong nonlinear features and frequency, forcing amplitude are revealed of this surface under low frequency and high frequency respectively. The inhibitory effect of nonlinear phenomenon caused by liquid viscous was also expounded.