نتایج جستجو برای: transient

تعداد نتایج: 127062  

Journal: :journal of artificial intelligence in electrical engineering 2012
mozhgan balavar

facts technology has considerable applications in power systems, such as; improving the steady stateperformance, damping the power system oscillations, controlling the power flow, and etc. statcom is oneof the most important facts devices used in the parallel compensation, enhancing transient stability andetc. since three phase fault is widespread in power systems, in this paper statcom is used...

2008
MICHAEL W. GEE

We show how the method of pseudo-transient continuation can be applied to improve the robustness of the Newton iteration within a nonlinear transient elasticity simulation. Pseudotransient continuation improves efficiency and robustness of the transient analysis by enabling larger time steps than possible with a Newton iteration. We illustrate the algorithm by reporting on a simulation of a buc...

Golbakhshi, H., Khoshnam, F., Momeni-Khabisi, H., Namjoo, M.,

Evaluating the thermal effects and variations in temperature of rolling pneumatic tires, is a very important factor in safe performance of the vehicles. Normally, the transient thermal investigation of rolling tires is performed by tire test rigs. However, experimental analysis is a very time and cost consuming process and because of technical limitations, the tests cannot be carried out in mos...

Journal: :journal of chemical and petroleum engineering 2012
azim kalantari asl hamid reza nasriani mohammad hosein zareenejad

decline curve analysis has some advantages over transient well test analysis in which it is not required to shut-in the well and also wellbore storage effects do not exist. few studies have been done on decline curve analysis of naturally fractured reservoirs but there are even some limitations with available models. on the other hand well test could be expensive and in some operational conditi...

Journal: :Medical Journal of Clinical Trials & Case Studies 2017

FACTS technology has considerable applications in power systems, such as; improving the steady stateperformance, damping the power system oscillations, controlling the power flow, and etc. STATCOM is oneof the most important FACTS devices used in the parallel compensation, enhancing transient stability andetc. Since three phase fault is widespread in power systems, in this paper STATCOM is used...

This paper presents the transient solution of a variant working vacation queue with balking. Customers arrive according to a Poisson process and decide to join the queue with probability $b$ or balk with $bar{b} = 1-b$. As soon as the system becomes empty, the server takes working vacation. The service times during regular busy period and working vacation period, and vacation times are assumed ...

In this paper a transient free convection flow around a sphere with variable surface temperature and embedded in a porous medium has been considered. The temperature of the sphere is suddenly raised and subsequently maintained at values that varies with position on surface. The method of asymptotic expansions is applied for small Rayleigh numbers and then a finite-difference scheme is used to s...

Journal: :مجله دانشگاه علوم پزشکی کرمانشاه 0
mehdi zobeiri assistant professor in internal medicine, kermanshah university of medical sciences. behzad karami-matin assistant professor in health management, kermanshah university of medical sciences.

introduction: nosocomial infections affect nearly 10% of hospitalized patients. the majority of nosocomial infections are transmitted by contact, primarily by hands of health care workers. the micro-organisms on the hand can be divided into transient, resident and infectious flora. transient flora is the main cause of nosocomial infection which acquired primarily by contact and loosely attached...

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