نتایج جستجو برای: electro dynamic maxwells equation

تعداد نتایج: 644614  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بناب - دانشکده علوم پایه 1393

در این پایان نامه یک روش عددی برای حل معادلات کسری-زمانی و کسری-فضایی برگر ‎egin{equation*}‎ ‎d_t^{alpha}u+varepsilon uu_{x}= u u_{xx}+eta d_x^{eta}u‎, ‎end{equation*}‎ معادله ی کسری-زمانی و کسری-فضایی پوآسن ‎egin{equation*}‎ ‎d_x^{eta}u‎ + ‎d_t^{alpha}u = f(x,t)‎, ‎end{equation*}‎ و معادله ی کسری-زمانی انتشار ‎egin{equation*}‎ ‎d_t^alpha u+u=k abla^2 u‎ + ‎f(x,t)‎, ‎end{equation*}‎ ...

2005
Rolf Ryham Chun Liu Zhi-Qiang Wang ROLF RYHAM CHUN LIU ZHI-QIANG WANG

Electro-kinetic fluids can be modeled by hydrodynamic systems describing the coupling between fluids and electric charges. The system consists of a momentum equation together with transport equations of charges. In the dynamics, the special coupling between the Lorentz force in the velocity equation and the material transport in the charge equation gives an energy dissipation law. In stationary...

Journal: :Physical review fluids 2023

Developed to address the drawbacks of electro-wetting, electro-dewetting is a digital microfluidic technique that makes liquid dewet on substrate using an electric potential. In this paper, we propose electrohydrodynamic model describe dynamic evolution charged slender drop under influence external field. We introduce lubrication theory simplify and reproduce fundamental operations, including d...

2014
Dimitri Mugnai Matteo Rinaldi

We study the existence of cylindrically symmetric electro-magnetostatic solitary waves for a system of a nonlinear Klein–Gordon equation coupled with Maxwell’s equations in presence of a positive mass and of a nonnegative nonlinear potential. Nonexistence results are provided as well.

2005
K. R. Rajagopal

Electro-active solids are solids that are either infused with electrorheological fluids or embedded with electrically conducting particles, the body as a whole however conducting negligible current. In this paper, we provide a mathematical framework, within the context of continuum mechanics, for the study of electro-active solids. The theory assumes that the body can be considered as a continu...

Journal: :Nonlinear Dynamics 2022

Abstract Flexoelectricity is a universal electro-mechanical coupling effect that occurs in dielectrics of all symmetric groups and becomes dominant at the micro- nano-scales. It plays an important role evaluating micro-electro-mechanical systems (MEMS) such as energy harvesters which convert vibrational to electric energy. At finer length scales, micro-inertia effects significantly contribute b...

Esmaeelzadeh , Esmaeel , Tathiri , Gholamreza ,

  One of the ways, to control of the drag forces applying to the circular cylinder in the air flow, is control of the generated boundary layer around the cylinder, and one of the new and effective ways for control of the boundary layer, is using high voltage electrostatic field in fluid flow. In these conditions, because of the coupled relations between electric field and momentum equations, th...

Due to considerable stored energy in surfaces of nano-scales in comparison with the stored energy in their bulk, considering the surface energy is necessary for the analysis of various behaviors of nano-scales for more precise design and manufacturing. In this article, the longitudinal dynamic behavior of nanobars in the presence of the surface energy parameters is studied. To this end, the lon...

2017
Tihomir Asparouhov Ellen L. Hamaker Bengt Muthén

ISSN: 1070-5511 (Print) 1532-8007 (Online) Journal homepage: http://www.tandfonline.com/loi/hsem20 Dynamic Structural Equation Models Tihomir Asparouhov, Ellen L. Hamaker & Bengt Muthén To cite this article: Tihomir Asparouhov, Ellen L. Hamaker & Bengt Muthén (2017): Dynamic Structural Equation Models, Structural Equation Modeling: A Multidisciplinary Journal To link to this article: https://do...

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