Review of nonlinear electrokinetic flows in insulator‐based dielectrophoresis: From induced charge to Joule heating effects

2021 ◽  
Author(s):  
Xiangchun Xuan
Keyword(s):  
Joule Heating ◽  
Heating Effects ◽  
Induced Charge ◽  
Electrokinetic Flows

scholarly journals Joule heating effects on electrokinetic flows with conductivity gradients

2020 ◽  
Author(s):  
Le Song ◽  
Liandong Yu ◽  
Christian Brumme ◽  
Ryan Shaw ◽  
Cheng Zhang ◽  
...  
Keyword(s):  
Joule Heating ◽  
Heating Effects ◽  
Electrokinetic Flows

scholarly journals Joule Heating Effects on Transport-Induced-Charge Phenomena in an Ultrathin Nanopore

Micromachines ◽  
2020 ◽  
Vol 11 (12) ◽  
pp. 1041
Author(s):  
Zhixuan Wang ◽  
Wei-Lun Hsu ◽  
Shuntaro Tsuchiya ◽  
Soumyadeep Paul ◽  
Amer Alizadeh ◽  
...  
Keyword(s):  
Joule Heating ◽  
Electroosmotic Flow ◽  
Chemical Potential ◽  
Local Maximum ◽  
Dynamics Simulation ◽  
Fluid Behavior ◽  
Heating Effects ◽  
Complex Fluid ◽  
Induced Charge ◽  
Chemical Potential Gradients

Transport-induced-charge (TIC) phenomena, in which the concentration imbalance between cations and anions occurs when more than two chemical potential gradients coexist within an ultrathin dimension, entail numerous nanofluidic systems. Evidence has indicated that the presence of TIC produces a nonlinear response of electroosmotic flow to the applied voltage, resulting in complex fluid behavior. In this study, we theoretically investigate thermal effects due to Joule heating on TIC phenomena in an ultrathin nanopore by computational fluid dynamics simulation. Our modeling results show that the rise of local temperature inside the nanopore significantly enhances TIC effects and thus has a significant influence on electroosmotic behavior. A local maximum of the solution conductivity occurs near the entrance of the nanopore at the high salt concentration end, resulting in a reversal of TIC across the nanopore. The Joule heating effects increase the reversal of TIC with the synergy of the negatively charged nanopore, and they also enhance the electroosmotic flow regardless of whether the nanopore is charged. These theoretical observations will improve our knowledge of nonclassical electrokinetic phenomena for flow control in nanopore systems.

scholarly journals Entropy Generation of MHD Poiseuille Flow with Hall and Joule Heating Effects

2020 ◽  
Vol 14 ◽  
Keyword(s):  
Entropy Generation ◽  
Joule Heating ◽  
Poiseuille Flow ◽  
Hall Current ◽  
Coupled System ◽  
Bejan Number ◽  
Electrically Conducting ◽  
Heating Effects ◽  
Adomian Decomposition ◽  
Ion Slip

In this article investigation has been conducted on the effects of Hall parameter, rotation parameter and Joule heating on the entropy generation of fully developed electrically conducting Poiseuille flow. The coupled system of ordinary differential equations for the flow are obtained, non-dimensionalised and solutions are constructed by Adomian decomposition technique. The effects of Hall current, Ion-slip, Joule heating and magnetic parameters on the velocity, temperature, entropy generation and Bejan number are explained and shown graphically. The results indicate that fluid entropy generation is induced by increase in Hall current, rotation and Joule heating parameters. Furthermore Bejan number is accelerated by Hall current, rotation, Magnetic and Joule heating parameters which signifies that heat transfer irreversibility dominates entropy generation.

Two-dimensional numerical simulations of electrothermal behaviour in very large scale integrated contacts and vias

1989 ◽  
Vol 67 (4) ◽  
pp. 212-217 ◽  
Author(s):  
W. Allegretto ◽  
A. Nathan ◽  
K. Chau ◽  
H. P. Baltes
Keyword(s):  
Electrical Conductivity ◽  
Joule Heating ◽  
Large Scale ◽  
Two Dimensional ◽  
Dimensional Model ◽  
Heating Effects ◽  
Two Dimensional Model ◽  
Potential Gradients ◽  
Metallization Process ◽  
Temperature Equation

We present results of electrothermal interactions in fine geometry contacts and vias. The results have been obtained using a two-dimensional model based on the finite-box procedure. For the contact geometry, large electric potential gradients and consequently high Joule-heating effects develop at the interface, which is relatively low in electrical conductivity. In the case of the via, however, temperature escalations result from singularities in the electric field at geometrically imperfect locations, owing to inadequate step coverage in the metallization process. In particular, we discuss the treatment of boundary conditions for the temperature equation.

Joule heating effects on magnetohydrodynamic free convection flow of a micropolar fluid

1999 ◽  
Vol 26 (2) ◽  
pp. 219-227 ◽  
Author(s):  
M. Abd El-Hakiem ◽  
A.A. Mohammadein ◽  
S.M.M. El-Kabeir ◽  
Rama Subba Reddy Gorla
Keyword(s):  
Free Convection ◽  
Joule Heating ◽  
Micropolar Fluid ◽  
Convection Flow ◽  
Free Convection Flow ◽  
Heating Effects
Sign in / Sign up

Export Citation Format

Share Document