Impact dynamics of a charged droplet onto different substrates

2021 ◽  
Vol 33 (10) ◽  
pp. 102111
Author(s):  
Haojie Xu ◽  
Junfeng Wang ◽  
Zhentao Wang ◽  
Kai Yu ◽  
Huibin Xu ◽  
...  
Keyword(s):  
Impact Dynamics ◽  
Charged Droplet

Where Do the Ions Reside in a Highly Charged Droplet?

2019 ◽  
Author(s):  
Victor Kwan ◽  
Anatoly Malevanets ◽  
Styliani Consta
Keyword(s):  
Molecular Dynamics ◽  
Analytical Theory ◽  
Charged Droplet ◽  
Linear Dimensions

Droplets in atmospheric and electrosprayed aerosols carry more often than less, a multitude of ions. We address the question of the location of a collection of ions in charged aqueous droplets with linear dimensions in the nanometer<br>range using atomistic molecular dynamics and analytical theory. All the details of the computations have been described in the manuscript.<br>

Where Do the Ions Reside in a Highly Charged Droplet?

2019 ◽  
Author(s):  
Victor Kwan ◽  
Anatoly Malevanets ◽  
Styliani Consta
Keyword(s):  
Molecular Dynamics ◽  
Analytical Theory ◽  
Charged Droplet ◽  
Linear Dimensions

Droplets in atmospheric and electrosprayed aerosols carry more often than less, a multitude of ions. We address the question of the location of a collection of ions in charged aqueous droplets with linear dimensions in the nanometer<br>range using atomistic molecular dynamics and analytical theory. All the details of the computations have been described in the manuscript.<br>

scholarly journals A Rational Numerical Method for Simulation of Drop-Impact Dynamics of Oleo-Pneumatic Landing Gear

2021 ◽  
Vol 11 (9) ◽  
pp. 4136
Author(s):  
Rosario Pecora
Keyword(s):  
Numerical Method ◽  
Initial Conditions ◽  
Impact Load ◽  
Numerical Models ◽  
Landing Gear ◽  
Design Stage ◽  
Impact Dynamics ◽  
State Variables ◽  
Adopted Model ◽  
The Impact

Oleo-pneumatic landing gear is a complex mechanical system conceived to efficiently absorb and dissipate an aircraft’s kinetic energy at touchdown, thus reducing the impact load and acceleration transmitted to the airframe. Due to its significant influence on ground loads, this system is generally designed in parallel with the main structural components of the aircraft, such as the fuselage and wings. Robust numerical models for simulating landing gear impact dynamics are essential from the preliminary design stage in order to properly assess aircraft configuration and structural arrangements. Finite element (FE) analysis is a viable solution for supporting the design. However, regarding the oleo-pneumatic struts, FE-based simulation may become unpractical, since detailed models are required to obtain reliable results. Moreover, FE models could not be very versatile for accommodating the many design updates that usually occur at the beginning of the landing gear project or during the layout optimization process. In this work, a numerical method for simulating oleo-pneumatic landing gear drop dynamics is presented. To effectively support both the preliminary and advanced design of landing gear units, the proposed simulation approach rationally balances the level of sophistication of the adopted model with the need for accurate results. Although based on a formulation assuming only four state variables for the description of landing gear dynamics, the approach successfully accounts for all the relevant forces that arise during the drop and their influence on landing gear motion. A set of intercommunicating routines was implemented in MATLAB® environment to integrate the dynamic impact equations, starting from user-defined initial conditions and general parameters related to the geometric and structural configuration of the landing gear. The tool was then used to simulate a drop test of a reference landing gear, and the obtained results were successfully validated against available experimental data.

Isolated moving charged droplet evaporation characteristics in electrostatic field with highly volatile R134a

2021 ◽  
Vol 178 ◽  
pp. 121583
Author(s):  
Jiameng Tian ◽  
Tianyue Zhao ◽  
Zhifu Zhou ◽  
Bin Chen ◽  
Junfeng Wang ◽  
...  
Keyword(s):  
Electrostatic Field ◽  
Droplet Evaporation ◽  
Charged Droplet

Ball Impact Dynamics of Instep Soccer Kicking

2009 ◽  
Vol 41 (4) ◽  
pp. 889-897 ◽  
Author(s):  
HIRONARI SHINKAI ◽  
HIROYUKI NUNOME ◽  
MASANORI ISOKAWA ◽  
YASUO IKEGAMI
Keyword(s):  
Impact Dynamics ◽  
Ball Impact
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