Experimental and Simulation Investigation of the Nanoscale Charge Diffusion Process on a Dielectric Surface: Effects of Relative Humidity

2021 ◽  
Author(s):  
Xuejie Bai ◽  
Adriaan Riet ◽  
Song Xu ◽  
Daniel J. Lacks ◽  
Haifeng Wang
Keyword(s):  
Relative Humidity ◽  
Diffusion Process ◽  
Surface Effects ◽  
Dielectric Surface

scholarly journals Diffusion Process and Reaction on a Surface

2018 ◽  
Vol 2018 ◽  
pp. 1-11
Author(s):  
M. E. K. Fuziki ◽  
M. K. Lenzi ◽  
M. A. Ribeiro ◽  
A. Novatski ◽  
E. K. Lenzi
Keyword(s):  
Kinetic Equation ◽  
Boundary Conditions ◽  
Diffusion Process ◽  
Active Sites ◽  
Fractional Derivatives ◽  
Broad Class ◽  
Surface Effects ◽  
Infinite Medium ◽  
Reaction Process ◽  
Diffusive Process

We investigate the influence of the surface effects on a diffusive process by considering that the particles may be sorbed or desorbed or undergo a reaction process on the surface with the production of a different substance. Our analysis considers a semi-infinite medium, where the particles may diffuse in contact with a surface with active sites. For the surface effects, we consider integrodifferential boundary conditions coupled with a kinetic equation which takes non-Debye relation process into account, allowing the analysis of a broad class of processes. We also consider the presence of the fractional derivatives in the bulk equations. In this scenario, we obtain solutions for the particles in the bulk and on the surface.

scholarly journals Dielectric surface effects on transient ARCS in lightning arrester devices

2011 ◽  
Author(s):  
H. P. Hjalmarson ◽  
A. C. Pineda ◽  
R. E. Jorgenson ◽  
M. F. Pasik
Keyword(s):  
Surface Effects ◽  
Dielectric Surface

Burgers fluid flow in perspective of Buongiorno’s model with improved heat and mass flux theory for stretching cylinder

2020 ◽  
Vol 92 (3) ◽  
pp. 31101
Author(s):  
Zahoor Iqbal ◽  
Masood Khan ◽  
Awais Ahmed
Keyword(s):  
Diffusion Process ◽  
Mathematical Formulation ◽  
Thermal Relaxation ◽  
Mass Diffusion ◽  
Stretching Cylinder ◽  
Discussion Section ◽  
Buongiorno’S Model ◽  
Homotopy Analysis ◽  
Burgers Fluid ◽  
Diffusion Phenomena

In this study, an effort is made to model the thermal conduction and mass diffusion phenomena in perspective of Buongiorno’s model and Cattaneo-Christov theory for 2D flow of magnetized Burgers nanofluid due to stretching cylinder. Moreover, the impacts of Joule heating and heat source are also included to investigate the heat flow mechanism. Additionally, mass diffusion process in flow of nanofluid is examined by employing the influence of chemical reaction. Mathematical modelling of momentum, heat and mass diffusion equations is carried out in mathematical formulation section of the manuscript. Homotopy analysis method (HAM) in Wolfram Mathematica is utilized to analyze the effects of physical dimensionless constants on flow, temperature and solutal distributions of Burgers nanofluid. Graphical results are depicted and physically justified in results and discussion section. At the end of the manuscript the section of closing remarks is also included to highlight the main findings of this study. It is revealed that an escalation in thermal relaxation time constant leads to ascend the temperature curves of nanofluid. Additionally, depreciation is assessed in mass diffusion process due to escalating amount of thermophoretic force constant.

Some surface effects in porous fractals

1985 ◽  
Vol 46 (12) ◽  
pp. 2117-2123 ◽  
Author(s):  
F. Brochard
Keyword(s):  
Surface Effects
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