A time-dependent numerical simulation is performed to examine the flow separation control with action of a hybrid jet (the combination synthetic and continuous jets) over NACA23012 airfoil. The unsteady Reynolds-averaged Navier–Stokes (URANS) Spalart-Allmaras (SA) turbulence model simulate field around airfoil analyse effect jet. combined placed at point on upper surface which located 12% chord...

Purpose Active flow control on the NACA 0024 airfoil defined as suction-injection jet at chord-based Reynolds number of 1.5 × 1e + 5 is studied. Design/methodology/approach The three-dimensional incompressible unsteady Reynolds-averaged Navier–Stokes equations with SST k- ω turbulence model are used to study effects coflow-jet (CFJ) dynamic and static stall phenomena. CFJ implementation conduct...

an enhanced displacement feedback structural control procedure is presented for performance-based design in this paper. at first, a comparative study is implemented assessing three most common active control algorithms including state, acceleration, and displacement feedback controls. the advantage of the displacement feedback algorithm for active control of structures against earthquakes is de...

The paper presents common cascade control architecture where specific kind of redundancy could be considered. There are different approaches how to increase the reliability of networked control systems. Common approach uses redundant components in control system i.e. passive or active redundancy. We deal with quasi-redundant subsystems (shared redundancy) which could be very useful when critica...

in present paper, dynamic behavior and control of a fluidized bed reactor for polyethylene production has been considered. a double active sites model for ziegler-natta catalysts is used for simulation of polymerization reaction. hydrodynamic behavior of the bed is modeled using a two phase model including bubble and emulsion phases in which bubble phase has plug flow pattern with differentiall...

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...