射流速度剖面形状变化及其对界面稳定性的影响

基金项目: 国家自然科学基金资助项目(50371049);上海宝钢集团公司联合资助项目;上海市博士点基金;上海市优秀青年教师后备人选资助项目(03YQHB092)

Variation of Velocity Profile of Jet and Its Effect on Interfacial Stability

Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, P. R. China

摘要: 用线性稳定性理论研究了内部为轴对称液体射流、外部为同轴气体射流的粘性双流体模型．在液体射流和气体射流分别处于不同压力梯度作用的条件下，讨论了数学模型中射流速度剖面形状变化，并用Chebyshev配点法研究了剪切层厚度变化及其对界面稳定性产生的影响．
- 自由射流 /
- 速度剖面 /
- Chebyshev配点法 /
- 界面稳定性
Abstract: Linear stability theory is used to study a double fluid model for a liquid jet surrounded by a coaxial gas steam.Under the different pressure gradients for liquid and gas flow,the variation of the velocity profile in the model and the thickness of the shear layer were investigated.The effects of such variation on the interfacial stability were discussed with the application of Chebyshev spectral collocation method.
- free jet /
- velocity profile /
- Chebyshev collocation method /
- interfacial stability

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