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Increasing Electric Actuators Numbers in the Separation Point

Source:Update Time:2014-07-18Hits:

The conventional valve FAQ addresses a new methodology for servo electric actuators modeling from the perspective of selection in terms of the dynamic behavior in a number of engineering applications. With increasing electric actuators numbers in the separation point, the electricity flow moves downstream and the vortex patches will be more diffused. In addition, the second invariant of the electric actuators deformation tensor can be presented to give a deeper insight into the electric actuators structures in the wake. According to scientific research, one of the most appropriate methods of identifying an electric actuators vortex in a turbulent flow is making use of the positive second invariant of the deformation tensor in the shear layer. The layer might be separated from the electric actuators ball surface that is rolled up into a turbulent electric actuators structure to form a pair of strong stream wise vortices in the far wake.

Zones of very electric actuators low vortices still exist in the region immediately behind the electric actuators ball. The large scale vortexes are originating mainly from the separated electric actuators shear layers where the vortexes are coming into being. The electric actuators simulation points to a mechanism of producing a large amount of lifting forces on the ball in which the large scale coherent eddies are periodically embedded into the wake. Prediction of the electric actuators shedding frequencies yields good agreement with experimental measurements while wake frequencies can be obtained by calculation of the power spectrum of the span. It has been proven that the electric actuators lift coefficient has a clear dominant power peak that is associated with the major shedding frequency.

Compared with the pneumatic actuators, the main peaks also appear for other numbers that are similar to the experimental results of electric actuators in terms of lift coefficient. The electric actuators numerical simulations can be presented in the flow, which may result from the vortex shedding around the electric actuators ball valve. There is qualitatively evidenced that the process is not random and another proof can be represented in the measurements of the lift coefficient as well as changes in amplitude vibration of ball valve as function of the time.

These measurements have once again confirmed the regularity of the electric actuators ball vibration, and the qualitative similarity of the frequency oscillations in both the experiment and the calculations. The electric actuators results can be gained in terms of the stability and instability of the vibration of the ball valve in the system, which can also be studied by an experimental method. There is a widely received criterion for rotational stability of the electric actuators ball and its main relationships with the rotation proces.

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