Method of and apparatus for controlling turbulence in a wall-bou

Details Method of and apparatus for controlling turbulence in a wall-bou Method of and apparatus for controlling turbulence in a wall-bou

1991-11-19

1993-11-23

Taylor, Dennis L.

Hydraulic and earth engineering

Fluid control, treatment, or containment

438 37, 438 39, 405 80, E02B 302

Patent

active

052637930

ABSTRACT:
Turbulence in a wall-bounded fluid flow field having a turbulent wall region characterized by a system of roll pairs extending in the direction of flow, and propagating structures interacting with the system of roll pairs, is controlled by introducing into the turbulent flow, a disturbance that changes the character of the propagating structures directed at an inclined angle to the direction of flow. Where the disturbance increases the amplitudes of the propagating structure, turbulent mixing or heating is increased; and when the disturbance decreases the amplitude of the propagating structure, the turbulent drag is decreased.

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L. Sirovich et al., Theoretical And Computational Fluid Dynamics, "Propagating Structures in Wall-Bounded Turbulent Flows", Springer-Verlag, 1991, pp. 307-317.
L. Sirovich et al., "Plane Waves and Structures in Turbulent Channel Flow", Phys. Fluids A 2 (12), Dec. 1990, American Institute of Physics, pp. 2217-2226.

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