نتایج جستجو برای: comsol multiphysics

تعداد نتایج: 3241  

حفاظت از تجهیزات، ایمنی افراد و تداوم تامین برق از اهداف اصلی سیستم زمین هستند. برای طراحی دقیق سیستم زمین، تعیین توزیع پتانسیل بر روی سطح زمین و مقاومت معادل سیستم ضروری است. آگاهی از چنین پارامتر هایی اجازه بررسی امنیت ارائه شده توسط سیستم زمین، هنگامی که خرابی در سیستم های قدرت وجود دارد را می دهد.یک روش جدید برای طراحی سیستم ارتینگ با استفاده از روش اجزاء محدود (FEM) در این مقاله ارائه شده ...

Hydrocyclones have been used as an operational tool to separate liquids from solids in different industries for more than 50 years. Considering the importance of this issue, many experimental and numerical attempts have been made to estimate the performance of this tool regarding the resulting pressure drop and the separation efficiency (particles separation limit diameter...

ژورنال: کواترنری ایران 2019
Ansari, Abdolhamid , Ghorbani, Ahmad , Pasiar, Ali,

Introduction The gravity method measures the vertical component of the acceleration at the Earth’s surface. The earth’s gravity field is affected by the density of different rocks and structures. Therefore, this method can be used in mineral exploration or studying the subsurface cavities and structures such as bedrocks, channels, and dikes. Inverse modeling is useful in understanding the p...

Journal: :Chemosphere 2021

The increasing needs for modelling of reactive transport phenomena in different areas environmental have led to the development many numerical codes. However, them suffer from a lack flexibility, which hinders adaptation codes new problems. Moreover, cases, changes can be done by very reduced group people, and often single person, main developer. Implementation platforms based on multiphysics r...

Journal: :E3S web of conferences 2021

Solid oxide fuel cells (SOFCs) are promising high-effective energy conversion devices for wide sources and high efficiency. Based on non-linear kinetics at triple-phase-boundary, a three-dimensional model with single flow channel was constructed. Distribution of mass flow, temperature current density in different configuration working conditions were investigated. Critical factors voltage outpu...

2015
Andriy Samila

A topology of high-frequency field intensity in the work area of a saddle-shaped coil for a nuclear qaudrupole resonance spectrometer was studied. With a view to determine magnetic field topology, a computational domain was created which is a model of a saddle-shaped coil physical structure. Finite element method was used to perform numerical simulation in COMSOL Multiphysics software. Accordin...

2014
C. Athanasopoulos G. P. Tsironis

We present numerical simulations for the propagation of surface plasmon polaritons (SPPs) in a dielectric-metal-dielectric waveguide using COMSOL multiphysics software. We show that the use of an active dielectric with gain that compensates metal absorption losses enhances substantially plasmon propagation. Furthermore, the introduction of the active material induces, for a specific gain value,...

2014
Khairun Nisa Khamil Kok Swee Leong Norizan Bin Mohamad Norhayati Soin Norshahida Saba

Sensitivity is an important element of a sensing process, and it is part of the open-loop gain of the sensor. This makes it a strong inverse relationship between sensitivity and bandwidth for any class of sensors. The geometrical of the accelerometer, mass width, beam (length and width) of the device and its sensitivity are analyzed theoretically and also using finite element analysis software,...

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