In this study, inelastic constitutive modelling is considered for the simulation of shear-thinning fluids through a circular channel. Numerical solutions are presented for power-law inelastic model, considering axisymmetric Poiseuille flow through a channel. The numerical simulation of such fluid is performed by using the Galerkin finite element approach based on artificial compression method (...

Glottal volume velocity waveform characteristics of 224 subjects, categorized in four groups according to gender and vocal training, were determined, and their relations to sound-pressure level, fundamental frequency, intra-oral pressure, and age were analyzed. Subjects phonated at three intensity conditions. The glottal volume velocity waveforms were obtained by inverse filtering the oral flow...

In the deregulated electricity market, demand side participation has become a very important solution to real-time energy balance. Demand response programs are offered by the utility companies to reduce the load on the customer side with monetary incentives when the power demand is high. It is a popular tool used by electricity utilities to manage the supply load and reduce the operating cost. ...

Because their capability to change the network parameters with a rapid response and enhanced flexibility, flexible AC transmission system (FACTS) devices have taken more attention in power systems operations as improvement of voltage profile and minimizing system losses. In this way, this paper presents a multi-objective evolutionary algorithm (MOEA) to solve optimal reactive power dispatch (OR...

The topology and management of a sustainable dual-bus, AC DC, microgrid designed to operate connected weak grid is presented. AC+DC hybrid microgrids are robust cost-competitive solution for poorly areas, as can be found in rural or island electrification. versatile proposed this work developed around wind turbine based on particular induction generator with double stator winding squirrel cage ...

In view of the imbalanced distribution of power load and resources, including the status of “electric shortage” in some cities in our country, the article discusses the long-distance transmission technology. It mainly analyzed two ways of the long-distance transmission: UHV AC transmission and UHV DC transmission. The fractional frequency transmission technology and half wavelength AC transmiss...

—Frequency is an important indicator of balance between active power generation and load. Active power-frequency dynamics analysis is an important task of power system operation. This paper proposes a novel cascading outage simulation model based on dynamic Fast Decoupled Load Flow (FDLF) considering frequency deviation. A distributed slack bus model is considered in such a way that all of the ...

With the introduction of competition in the existing electrical market, it becomes necessary to enhance the transmission capacity of the power system through the existing transmission lines. The utilization of FACTS technologies can have significant impact on power system reliability. Low cost and feasibly better improvement can be achieved by using power electronics based devices in the system...