DROP IMPACT ON SUPERHYDROPHOBIC SURFACES−VARYING GRAVITATIONAL EFFECTS

2012 ◽  
Vol 22 (5) ◽  
pp. 409-429 ◽  
Author(s):  
D. Duvivier ◽  
Romain Rioboo ◽  
M. Voue ◽  
J. De Coninck
Keyword(s):  
Drop Impact ◽  
Superhydrophobic Surfaces ◽  
Gravitational Effects

scholarly journals Reducing the contact time using macro anisotropic superhydrophobic surfaces — effect of parallel wire spacing on the drop impact

2017 ◽  
Vol 9 (8) ◽  
pp. e415-e415 ◽  
Author(s):  
Meirong Song ◽  
Zhaohui Liu ◽  
Yongjian Ma ◽  
Zhichao Dong ◽  
Yilin Wang ◽  
...  
Keyword(s):  
Contact Time ◽  
Drop Impact ◽  
Superhydrophobic Surfaces ◽  
Parallel Wire

scholarly journals Drop Impact upon Micro- and Nanostructured Superhydrophobic Surfaces

Langmuir ◽  
2009 ◽  
Vol 25 (20) ◽  
pp. 12293-12298 ◽  
Author(s):  
Peichun Tsai ◽  
Sergio Pacheco ◽  
Christophe Pirat ◽  
Leon Lefferts ◽  
Detlef Lohse
Keyword(s):  
Drop Impact ◽  
Superhydrophobic Surfaces

Drop impact upon superhydrophobic surfaces with regular and hierarchical roughness

2016 ◽  
Vol 108 (14) ◽  
pp. 141602 ◽  
Author(s):  
Cunjing Lv ◽  
Pengfei Hao ◽  
Xiwen Zhang ◽  
Feng He
Keyword(s):  
Drop Impact ◽  
Superhydrophobic Surfaces ◽  
Hierarchical Roughness

Drop impact and wettability: From hydrophilic to superhydrophobic surfaces

2012 ◽  
Vol 24 (10) ◽  
pp. 102104 ◽  
Author(s):  
Carlo Antonini ◽  
Alidad Amirfazli ◽  
Marco Marengo
Keyword(s):  
Drop Impact ◽  
Superhydrophobic Surfaces

Drop Impact on Oblique Superhydrophobic Surfaces with Two-Tier Roughness

Langmuir ◽  
2017 ◽  
Vol 33 (14) ◽  
pp. 3556-3567 ◽  
Author(s):  
Rui Zhang ◽  
Pengfei Hao ◽  
Feng He
Keyword(s):  
Drop Impact ◽  
Superhydrophobic Surfaces

Two types of Cassie-to-Wenzel wetting transitions on superhydrophobic surfaces during drop impact

Soft Matter ◽  
2015 ◽  
Vol 11 (23) ◽  
pp. 4592-4599 ◽  
Author(s):  
Choongyeop Lee ◽  
Youngsuk Nam ◽  
Henri Lastakowski ◽  
Janet I. Hur ◽  
Seungwon Shin ◽  
...  
Keyword(s):  
Impact Velocity ◽  
Water Drop ◽  
Drop Impact ◽  
Superhydrophobic Surfaces ◽  
Wetting Transitions ◽  
Different Types ◽  
The Impact

Different types of Cassie-to-Wenzel transitions on superhydrophobic surfaces with the impact velocity of water drop.

Drop impact on inclined superhydrophobic surfaces

2016 ◽  
Vol 461 ◽  
pp. 114-121 ◽  
Author(s):  
Sani LeClear ◽  
Johnathon LeClear ◽  
Abhijeet ◽  
Kyoo-Chul Park ◽  
Wonjae Choi
Keyword(s):  
Drop Impact ◽  
Superhydrophobic Surfaces

Self-propelled jumping upon drop coalescence on Leidenfrost surfaces

2014 ◽  
Vol 752 ◽  
pp. 22-38 ◽  
Author(s):  
Fangjie Liu ◽  
Giovanni Ghigliotti ◽  
James J. Feng ◽  
Chuan-Hua Chen
Keyword(s):  
Flat Surface ◽  
Surface Interactions ◽  
The Self ◽  
Superhydrophobic Surfaces ◽  
Gravitational Effects ◽  
Liquid Drops ◽  
Drop Coalescence ◽  
Cutoff Radius ◽  
Initial Drop ◽  
Water Drops

AbstractSelf-propelled jumping upon drop coalescence has been observed on a variety of textured superhydrophobic surfaces, where the jumping motion follows the capillary–inertial velocity scaling as long as the drop radius is above a threshold. In this paper, we report an experimental study of the self-propelled jumping on a Leidenfrost surface, where the heated substrate gives rise to a vapour layer on which liquid drops float. For the coalescence of identical water drops, we have tested initial drop radii ranging from 20 to $\def \xmlpi #1{}\def \mathsfbi #1{\boldsymbol {\mathsf {#1}}}\let \le =\leqslant \let \leq =\leqslant \let \ge =\geqslant \let \geq =\geqslant \def \Pr {\mathit {Pr}}\def \Fr {\mathit {Fr}}\def \Rey {\mathit {Re}}500\ \mu \mathrm{m}$, where the lower bound is related to the spontaneous takeoff of individual drops and the upper bound to gravitational effects. Regardless of the approaching velocity prior to coalescence, the measured jumping velocity is around 0.2 when scaled by the capillary–inertial velocity. This constant non-dimensional velocity holds for the experimentally accessible range of drop radii, and we have found no cutoff radius for the scaling, in contrast to prior experiments on textured superhydrophobic surfaces. The Leidenfrost experiments quantitatively agree with our numerical simulations of drop coalescence on a flat surface with a contact angle of 180°, suggesting that the cutoff is likely to be due to drop–surface interactions unique to the textured superhydrophobic surfaces.

Artificial satellite orbit computations

1966 ◽  
Vol 25 ◽  
pp. 363-371
Author(s):  
P. Sconzo
Keyword(s):  
Artificial Satellite ◽  
Satellite Orbit ◽  
Artificial Satellites ◽  
Orbital Elements ◽  
Differential Correction ◽  
Gravitational Effects ◽  
Short Intervals ◽  
The Subject ◽  
Introductory Discussion ◽  
Orbit Computation

In this paper an orbit computation program for artificial satellites is presented. This program is operational and it has already been used to compute the orbits of several satellites.After an introductory discussion on the subject of artificial satellite orbit computations, the features of this program are thoroughly explained. In order to achieve the representation of the orbital elements over short intervals of time a drag-free perturbation theory coupled with a differential correction procedure is used, while the long range behavior is obtained empirically. The empirical treatment of the non-gravitational effects upon the satellite motion seems to be very satisfactory. Numerical analysis procedures supporting this treatment and experience gained in using our program are also objects of discussion.

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