The diffuser total efficiency was formulated and defined based on the generalized actuator disc model for index of diffuser-alone diffuser-augmented wind turbines. An optimization method to maximize developed using a genetic algorithm axisymmetric computational fluid dynamics. A case study conducted 10% chord-to-diameter ratio, 2% thickness-to-chord plate, crest position at 50% chord diffuser. ...

Abstract. A new generalized analytical model for representing body forces in numerical actuator disc models of wind turbines is proposed and compared to results from a blade element momentum (BEM) model. The an extension previously developed load model, which was based on the rotor being subject constant circulation, modified tip root effects, corresponding optimum design case. By adding parabo...

This paper started with the explanation of conditions for using momentum equation and presentation actuator disc theory. Focusing on flow model used in disk theory, both Froude-Rankine theorem Betz’s law have been examined. It has found that is not justified because a stream-tube as control volume does really exist (pseudo stream-tube). The also an unfounded velocity (v2) to connect thrust tota...

To achieve high quality and reliability in mechatronics products, thorough consideration of dynamic performance in structural design is essential. Typical examples include the design of optical pick-ups for disk related products, such as Compact Disc (CD) drives, and Magneto-optical Disc (MO) drives. Many researchers have developed design methodologies to optimize the nominal dynamic characteri...

abstract: this paper presents dynamic modelling and control of a linear prismatic series of elastic actuator. the capability of generating large torques is why this actuator is increasingly used in human-assistive robotic systems. due to having human in the loop, the actuator requires precise control. a fractional pid controller known for its improved performance is used for the control, due to...

This paper presents an innovative mixing technology for centrifugal microfluidic platforms actuated using a specially designed flyball governor. The multilayer microfluidic disc was fabricated using a polydimethylsiloxane (PDMS) replica molding process with a soft lithography technique. The operational principle is based on the interaction between the elastic covering membrane and an actuator p...

The technique used to control the airflow is based on the electro-hydrodynamic actuator which is also called plasma actuator. This actuator ensures the airflow control thanks to the electric wind created by the electrical corona discharge. This ionic wind is developed at the profile surface tangential to the initial free airflow so that it has a significant effect on the boundary layer flow. Th...