Zobrazeno 1 - 10
of 177
pro vyhledávání: '"H. Vahedi Tafreshi"'
Publikováno v:
Langmuir. 37:928-938
This article presents the first experimental-computational study on the centrifugal detachment of a compound droplet (e.g., a primary water droplet cloaked by an immiscible oil) from a fiber. The work was intended to establish a method for quantifyin
Publikováno v:
Separation and Purification Technology. 211:602-609
A physics-based nonwoven structure generation model is presented in this work. The model is capable of incorporating the mechanical properties of the fibers in the simulations by treating each fiber as an array of beads connected to one another via s
Publikováno v:
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 558:154-163
The current paper presents an energy minimization method, implemented in the Surface Evolver code, for tracking the air–water interface intrusion in a hydrophobic fibrous membrane and thereby studying the effects of the membrane’s microstructure
Publikováno v:
Applied Surface Science. 456:626-636
A water droplet can exhibit a high apparent contact angle on a hydrophobic fibrous surface. However, a high contact angle does not guarantee droplet mobility on the surface. The reasons behind droplet adhesion to a hydrophobic fibrous surface has not
Autor:
Majeda Khraisheh, Richard J Alan Esteves, Mohamed Gad-el-Hak, H. Vahedi Tafreshi, Ruh Ullah, James T. McLeskey, Mohammad A. Al-Ghouti
Publikováno v:
Desalination. 433:56-67
This research was made possible by a grant from the Qatar National Research Fund under its National Priorities Research Program award number NPRP No: 8-270-2-106 . Its contents are solely the responsibility of the authors and do not necessarily repre
Autor:
D.G. Venkateshan, H. Vahedi Tafreshi
Publikováno v:
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 538:310-319
This work presents a detailed investigation of the droplet lower and upper contact angles on hydrophobic wire screens with different properties such as wire diameter, wire spacing, or Young–Laplace contact angle. Numerical simulation and experiment
Autor:
H. Aziz, H. Vahedi Tafreshi
Publikováno v:
International Journal of Multiphase Flow. 98:128-138
This work presents a detailed computational study on the role of microstructural properties of a superhydrophobic granular coating on its drag reducing performance. More specifically, the effects of the Young–Laplace contact angle, particle diamete
Autor:
H. Vahedi Tafreshi, M. Jamali
Publikováno v:
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 629:127418
In this paper, we present a new approach for using the Surface Evolver (SE) finite element program to simulate the 3-D shape of a droplet on a curved surface. The approach proposed in this paper circumvents the need for carrying out complicated deriv
Publikováno v:
Separation and Purification Technology. 180:107-113
This paper reports on our investigation of the effects of surface roughness on the equilibrium shape and apparent contact angles of a droplet deposited on a fiber. In particular, the shape of a droplet on a roughened fiber is studied via the energy m
Publikováno v:
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 512:61-70
Superhydrophobic coatings comprised of orthogonally layered fibers are studied in this paper in terms of their ability to accommodate water droplets in the non-wetting Cassie state. The effects of microstructural properties of these coatings on dropl