Drop impact onto a moving substrate: Aerodynamic rebound

被引：0

作者：

Stumpf, Bastian ^{[1
]}

Qezeljeh, Samaneh Abdi ^{[1
]}

Kamal, Reda ^{[1
,2
]}

Dezitter, Fabien ^{[3
]}

Martuffo, Alessandro ^{[4
]}

Roisman, Ilia V. ^{[1
]}

Hussong, Jeanette ^{[1
]}

机构：

[1] Tech Univ Darmstadt, Inst Fluid Mech & Aerodynam, D-64289 Darmstadt, Germany

[2] Politecn Milan, Dept Aerosp Sci & Technol, I-20156 Milan, Italy

[3] Airbus Helicopters SAS, Aeroport Int Marseille Prov, F-13725 Marignane, France

[4] Airbus Helicopters, Aeromech & Performance, F-13725 Marignane, France

来源：

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW | 2025年 / 184卷

关键词：

Drop impact; Multiphase flow; Drop deposition and rebound; Boundary layer; Wetting and icing; Moving substrate; TURBULENT-BOUNDARY-LAYER; DYNAMICS; LAMINAR; WAVES; WALL;

D O I：

10.1016/j.ijmultiphaseflow.2024.105113

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The dynamics of droplets approaching fast moving surfaces of high surface-tangential velocities is relevant to numerous technical applications, such as icing phenomena in aviation. Due to the substrate motion a boundary layer is formed which interacts with impacting droplets. In the present study, the transition from drop impact and splashing to boundary layer induced drop rebound is investigated for varying drop diameters, drop and plate velocity, as well as impact angles. It is found that this transition is strongly influenced by the degree of drop deformation that is induced by aerodynamic forces acting on the drop when it enters the boundary layer. Based on these considerations, a threshold model is obtained that describes the transition from splash to aerodynamic rebound. It is shown that the model is valid for a laminar and a turbulent boundary layer agreeing well with own and existing experimental data.

引用

页数：8

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