On management and control of turbulent shear flows

Fiedler, H. E.; Fernholz, H. H.

doi:10.1016/0376-0421(90)90002-2

Cited by 134 publications

(53 citation statements)

References 224 publications

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“…In some literature, boundary layer management or flow management are used instead of the boundary layer control (e.g. [15]). As schematically shown in figure 1, the active flow control can be divided into two categories, predetermined and reactive.…”

Section: Boundary Layer Control Methodsmentioning

confidence: 99%

On the Active and Passive Flow Separation Control Techniques over Airfoils

Moghaddam

Neishabouri

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. In the present work, recent advances in the field of the active and passive flow separation control, particularly blowing and suction flow control techniques, applied on the common airfoils are briefly reviewed. This broad research area has remained the point of interest for many years as it is applicable to various applications. The suction and blowing flow control methods, among other methods, are more technically feasible and market ready techniques. It is well established that the uniform and/or oscillatory blowing and suction flow control mechanisms significantly improve the lift-to-drag ratio, and further, postpone the boundary layer separation as well as the stall. The oscillatory blowing and suction flow control, however, is more efficient compared to the uniform one. A wide range of parameters is involved in controlling the behavior of a blowing and/or suction flow control, including the location, length, and angle of the jet slots. The oscillation range of the jet slot is another substantial parameter.

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Section: Boundary Layer Control Methodsmentioning

confidence: 99%

On the Active and Passive Flow Separation Control Techniques over Airfoils

Moghaddam

Neishabouri

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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“…Information of this type could, in principle, be used with large dense arrays of MEMS-fabricated wall actuators and an appropriate control system to manipulate the near-wall coherent structures and their dynamics in order to interfere with the bursting process. Various attempts to develop sensors, actuators, and control systems to accomplish this goal are discussed by Bushnell & McGinley (1989), Fiedler & Fernholz (1990), Wilkinson (1990), Gad-el-Hak (1989, Choi et al ( , 1994, Jacobson & Reynolds (1993, Moin & Bewley (1994), McMichael (1996), Lumley (1996, ), Pollard (1997, Lumley & Blossey (1998), and Löfdahl & Gad-el-Hak (1999).…”

Section: Active Sublayer Controlmentioning

confidence: 99%

Electrokinetic Microactuator Arrays for Control of Vehicles

Diez-Garcia¹,

Dahm²

2002

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“…Thus, it is necessary to modify locally the flow, to remove or delay the separation position or to reduce the development of the recirculation zone at the back and of the separated swirling structures [21]. This can be mainly obtained by controlling the flow near the wall with or without additional energy using active or passive devices [17,18]. The use of passive systems of control remains however always privileged for obvious reasons of cost.…”

Section: Introductionmentioning

confidence: 99%

Passive Control Around the Two-Dimensional Square Back Ahmed Body Using Porous Devices

Bruneau

Mortazavi

Gilliéron

2008

Journal of Fluids Engineering

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The control of two-dimensional flows around the square back Ahmed body is achieved using porous devices added on some parts of the body. The square back Ahmed body is considered either in an open domain or on top of a road. The modelling of the flow in different media is performed by means of the penalisation method. A good choice of the location of the porous interfaces yields a significant improvement of the aerodynamic quantities, specially for the square back body.

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On management and control of turbulent shear flows

Cited by 134 publications

References 224 publications

On the Active and Passive Flow Separation Control Techniques over Airfoils

On the Active and Passive Flow Separation Control Techniques over Airfoils

Electrokinetic Microactuator Arrays for Control of Vehicles

Passive Control Around the Two-Dimensional Square Back Ahmed Body Using Porous Devices

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