Laminar-Turbulent Transition in a Free Liquid Film Flow and Its Application to Liquid Atomization

自由液膜流中的层流-湍流转变及其在液体雾化中的应用

• 批准号: 03650156
• 负责人: AZUMA Tsuneo
• 金额: $ 1.34万
• 依托单位: Osaka City University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03650156/
• 关键词: Transition; Boundary layer; Liquid film; Stability; Polymer solution; Rotating disk; Atomization; Radial flow; LDV計測

1. The laminar-turbulent transition of a liquid film flow along a rotating disk is investigated both theoretically and experimentally. The flow has velocity profile of a kind of three-dimensional boundary layer. The instability of the flow changes, with an increase of the effect of the disk rotation on the flow, from a viscous- to an inflectional-type. The weak three-dimensionality of velocity profiles causes the decrease of the amplification factor of disturbance, suppressing the transition accordingly, whereas the strong three-dimensionality promotes the transition because of the inflectional instability.2. The influence caused by addition of a small amount of polymers on the transition in a radial liquid film flow were investigated experimentally. It was found that the addition of very small amount of polymer promotes the transition.

1。在理论上和实验中研究了沿旋转盘的液膜流动的层状扰动过渡。该流动具有三维边界层的速度曲线。流动的不稳定性变化，随着磁盘旋转对流动的影响，从粘性到弯曲型。速度曲线的弱三维性导致干扰的扩增因子的减少，从而相应地抑制了过渡，而强三维性则促进了由于拐点不稳定而促进了过渡。2。通过实验研究了添加少量聚合物对径向液体膜流中过渡的影响。发现添加非常少量的聚合物会促进过渡。

项目成果

東 恒雄,布部 誠: "回転円板に沿う放射状液膜流れの乱流遷移に関する研究(第3報、層流速度分布の数値計算)" 日本機械学会論文集. 58ー548. (1992)

Tsuneo Higashi，Makoto Fube：“沿旋转盘的径向液膜流的湍流转变的研究（第三次报告，层流速度分布的数值计算）”日本机械工程师学会会刊58-548（1992）。

Tsuneo AZUMA: "Laminar-Turbulent Transition in Thin Liquid Film Flow of Dilute Polymer Solution" Proc. Int. Conf. on Multiphase Flows '91-Tsukuba. 1. 323-326 (1991)

Tsuneo AZUMA：“稀聚合物溶液薄液膜流中的层流-湍流转变”Proc。

Tsuneo AZUMA: "Stability and Transition to Turbulence of Thin Liquid Film Flow along a Rotating Disk" The American Soc.of Mech.Eng.,Fluid Eng.Div.114. 97-102 (1991)

Tsuneo AZUMA：“沿旋转盘的薄液膜流的稳定性和湍流过渡”美国机械工程学会，流体工程分部 114。

Tsuneo AZUMA: "Stability and Transition to Turbulence of Thin Liquid Film Flow Along a Rotating Disk" ASME, Fluid Eng. Div.114. 97-102 (1991)

Tsuneo AZUMA：“沿着旋转盘的薄液膜流的稳定性和湍流过渡”ASME，流体工程。

Tsuneo AZUMA and Tatsuroh WAKIMOTO: "Experimental Study on Stability of a Radial Liquid Film Flow" Trans. JSME, (in Japanese). 58B. 1051-1055 (1992)

Tsuneo AZUMA 和 Tatsuroh WAKIMOTO：“径向液膜流稳定性的实验研究”Trans。