高分子微量添加による放射状液膜流の乱流遷移促進 : 第2報,線形安定性理論による考察
1990 年 56 巻 524 号 p. 944-951
詳細
1990 年 56 巻 524 号 p. 944-951
The promotion of the laminar-turbulent transition in a radial liquid film flow by polymer additives described in the previous paper is investigated by the linear stability theory. The constitutive equation used to present the response of the dilute polymer solution is that of the second order fluid model. The applicability of the model to the flow is examined by the Rouse model. The Orr-Sommerfeld Equation, modified by elasticterms, is solved numerically. Calculated results show that the elasticity of liquid given by the polymer additives increases the instability of the flow.
