摘要
利用线性稳定性分析方法及数值计算方法,研究非牛顿二阶流体射流的不稳定性。着重讨论了非牛顿参数对射流失稳的影响,特别是液体的粘性和弹性的消长对射流不稳定性的效应,结论与现有的实验结果基本一致。
The linearized stability analysis and numerical calculation for the instability of small-diameter non-Newtonian liquid jet are carried out.Second-order fluid model is used as the rheological equation of state.The Present analysis shows that the jet of viscoelastic liquid is less unstable when viscosity of the liquid increases of any given variable.This is in agreement with previous analysis when viscosity can have a significant influence on stability.However,the elasticity plays an important role in destabilized influence.This makes some differences from the previous analysis.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
1991年第4期33-39,共7页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
中山大学自然科学基金
关键词
非牛顿流体
稳定性
摄动法
non-newtonian fluid
stability
perturbation method
