摘要
用Galerkin有限元法数值模拟了振动斜板上的下落液体薄膜流动,研究了流场中不同强迫频率和初始扰动频率的影响.结果表明由于它们之间的相互作用,流场中出现低频信号,其在流场中的非线性效应使得表面波发生合并,加速了表面波的发展.对较高的强迫频率,这种效应更明显,且可观察到孤立包的产生.
The flow of a falling liquid film on an oscillating inclined plane is simulated numerically with Galerkin finite element method. The effects of oscillating frequency and initial perturbation frequency are investigated. A low-frequency modulation signal is observed in the flow field. Nonlinear effect of the low-frequency signal in the flow field promotes the coalescence of waves on a free surface, and accelerates the development of the waves. For higher oscillating frequencies, this effect is more apparent. A solitary hump is observed in the flow.
出处
《计算物理》
EI
CSCD
北大核心
2006年第1期57-60,共4页
Chinese Journal of Computational Physics
基金
国家自然科学基金(10002018
10472062)
上海市高等学校青年基金资助项目
