Numerical Simulation of drop impact on immiscible quiescent liquid layers

2019 ◽  
Vol 2019 (0) ◽  
pp. OS2-05
Author(s):  
Sota MATSUTANI ◽  
Mitsuhiro OHTA
Keyword(s):  
Numerical Simulation ◽  
Drop Impact ◽  
Quiescent Liquid

Experiments on splashing thresholds during single-drop impact onto a quiescent liquid film

2021 ◽  
Vol 121 ◽  
pp. 110279
Author(s):  
Tomio Okawa ◽  
Kohei Kubo ◽  
Katsuyuki Kawai ◽  
Sota Kitabayashi
Keyword(s):  
Liquid Film ◽  
Drop Impact ◽  
Single Drop ◽  
Quiescent Liquid

Numerical simulation of drop impact and jet buckling problems using the eXtended Pom–Pom model

2012 ◽  
Vol 169-170 ◽  
pp. 91-103 ◽  
Author(s):  
C.M. Oishi ◽  
F.P. Martins ◽  
M.F. Tomé ◽  
M.A. Alves
Keyword(s):  
Numerical Simulation ◽  
Drop Impact

Numerical simulation of a drop impact on a superhydrophobic surface with a wire

2019 ◽  
Vol 31 (11) ◽  
pp. 112107 ◽  
Author(s):  
M. Baggio ◽  
B. Weigand
Keyword(s):  
Numerical Simulation ◽  
Superhydrophobic Surface ◽  
Drop Impact

scholarly journals Criterion of drop fragmentation at a collision with a solid target (numerical simulation and experiment)

2021 ◽  
Vol 2057 (1) ◽  
pp. 012129
Author(s):  
A I Fedyushkin ◽  
A N Rozhkov
Keyword(s):  
Numerical Simulation ◽  
Drop Impact ◽  
Solid Target ◽  
Liquid Droplets ◽  
Simulation And Experiment ◽  
Small Obstacle

Abstract This paper is devoted to the study of the deformation and fragmentation of liquid droplets when they collide with masks and filters used for protection against infected droplets. In this paper, the local collision of a drop with a mask or filter is modeled numerically and experimentally by the example of the drop impact on a small obstacle. Studies allow tracing the fragmentation of oral and bronchial fluids and their transformation into the number of tiny droplets that spread infection in the air.

scholarly journals Numerical simulation and structure optimization of control rod drop impact in floating reactor

2021 ◽  
Vol 692 (2) ◽  
pp. 022124
Author(s):  
Qingsong Luo ◽  
Huaijin Xu ◽  
Yong Guo ◽  
Hui Li ◽  
Le Liu
Keyword(s):  
Numerical Simulation ◽  
Structure Optimization ◽  
Drop Impact ◽  
Control Rod

Quasi-Static and Dynamic Characterization of Oil-Based Modeling Clay and Numerical Simulation of Drop-Impact Test

2011 ◽  
Author(s):  
C. Hernandez ◽  
A. Maranon ◽  
I. A. Ashcroft ◽  
J. P. Casas-Rodriguez
Keyword(s):  
Numerical Simulation ◽  
High Strain Rate ◽  
Strain Rate ◽  
Impact Test ◽  
High Strain ◽  
Material Model ◽  
Drop Impact ◽  
Material Constants ◽  
Drop Impact Test ◽  
Modeling Clay

Numerical simulations require the determination of material constants associated to a given mathematical material model that accurately represents its mechanical behavior. Furthermore, for dynamic models, the characterization process should be accomplished at high strain rates since the mechanical properties of some materials are influenced by the rate of loading. This pressure-dependant behavior is commonly seen in paste-like materials such as oil-based modeling clay. This material, is widely used as simulating a material for analyzing metal forming processes, in impact applications as soft body impactor, or as backing material in ballistic resistance testing of body armors. There are many techniques used for characterizing these kinds of pastelike materials. Traditional quasi-static tests, such as compression or indentation, are the most commonly used, although, high strain rate techniques, such as the drop-impact test, are also used when dynamic properties are required. This paper presents the mechanical characterization of an oil-based modeling clay by two different techniques: quasi-static and a high strain rate technique. The results of a traditional quasi-static method, using compression tests, are compared with the constants determined by a proposed high strain rate characterization procedure that uses as input a single drop-impact test. Both sets of material constants are implemented in a numerical simulation that uses the power law plasticity material model. Drop impact numerical simulations and their verification against experimental results were performed to compare the accuracy of both sets of material constants and the suitability of the characterization techniques. Results illustrate that the proposed high strain rate characterization technique show advantages in the determination of the materials constants for the numerical simulation of dynamic events.

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