vortex generator - definition. What is vortex generator
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%ما هو (من)٪ 1 - تعريف

AERODYNAMIC DEVICE
Vortex controller; Vortex generators
  • 1967 Model [[Cessna 182]]K in flight showing after-market vortex generators on the wing leading edge
  • The [[Symphony SA-160]] was designed with two unusual vortex generators on its wing to ensure aileron effectiveness through the stall
  • TA-4SU Super Skyhawk]] showing the row of vortex generators on the drooped [[leading edge slats]].
  • Aftermarket Micro Dynamics vortex generators mounted on the wing of a [[Cessna 182]]K
  • Sketch describing how vortex generators improve flow characteristics

Vortex ring         
  • Pappus of the dandelion which produces a separated vortex ring in order to stabilize flight.
  • Flow around an idealized vortex ring
  • The curved arrows indicate airflow circulation about the rotor disc.  The helicopter shown is the [[RAH-66 Comanche]].
TORUS-SHAPED VORTEX IN A FLUID OR GAS
Spherical vortex; Hill's vortex; Vortex ringstate; Toroidal vortex; Hill's Spherical Vortex
A vortex ring, also called a toroidal vortex, is a torus-shaped vortex in a fluid; that is, a region where the fluid mostly spins around an imaginary axis line that forms a closed loop. The dominant flow in a vortex ring is said to be toroidal, more precisely poloidal.
Vortex ring         
  • Pappus of the dandelion which produces a separated vortex ring in order to stabilize flight.
  • Flow around an idealized vortex ring
  • The curved arrows indicate airflow circulation about the rotor disc.  The helicopter shown is the [[RAH-66 Comanche]].
TORUS-SHAPED VORTEX IN A FLUID OR GAS
Spherical vortex; Hill's vortex; Vortex ringstate; Toroidal vortex; Hill's Spherical Vortex
·add. ·- A ring-shaped mass of moving fluid which, by virtue of its motion of rotation around an axis disposed in circular form, attains a more or less distinct separation from the surrounding medium and has many of the properties of a solid.
Kármán vortex street         
  • A vortex street in a 2D liquid of hard disks
  • Visualisation]] of the vortex street behind a circular cylinder in air; the flow is made visible through release of glycerol vapour in the air near the cylinder
  • strakes]] fitted to break up vortices
  • Animation of vortex street created by a cylindrical object; the flow on opposite sides of the object is given different colors, showing that the vortices are shed from alternating sides of the object
  • A look at the Kármán vortex street effect from ground level, as air flows quickly from the [[Pacific ocean]] eastward over [[Mojave desert]] mountains. This phenomenon observed from ground level is extremely rare, as most cloud-related Kármán vortex street activity is viewed from space.
REPEATING PATTERN OF SWIRLING VORTICES CAUSED BY THE UNSTEADY SEPARATION OF FLOW OF A FLUID AROUND BLUNT BODIES
Vortex street; Vortex trail; Vortex train; Von Karman vortex street; Vortex Street; Kármán vortex trail; Kármán Vortex Trail; Kármán Trail; Von Karman street; Karmen vortice; Karmen vortices; Karman vortex; Karman vortices; Kármán vortex; Kármán vortices; Von Kármán vortices; Von Kármán vortex; Von Karman vortices; Von Karman vortex; Karman Vortex Trail; Karman vortex street; Karman vortex trail; Karman Trail; Von Kármán vortex street; Karman wind
In fluid dynamics, a Kármán vortex street (or a von Kármán vortex street) is a repeating pattern of swirling vortices, caused by a process known as vortex shedding, which is responsible for the unsteady separation of flow of a fluid around blunt bodies.

ويكيبيديا

Vortex generator

A vortex generator (VG) is an aerodynamic device, consisting of a small vane usually attached to a lifting surface (or airfoil, such as an aircraft wing) or a rotor blade of a wind turbine. VGs may also be attached to some part of an aerodynamic vehicle such as an aircraft fuselage or a car. When the airfoil or the body is in motion relative to the air, the VG creates a vortex, which, by removing some part of the slow-moving boundary layer in contact with the airfoil surface, delays local flow separation and aerodynamic stalling, thereby improving the effectiveness of wings and control surfaces, such as flaps, elevators, ailerons, and rudders.