Görtler Vortices
In fluid dynamics, Görtler vortices are secondary flows that appear in a boundary layer flow along a concave wall. If the boundary layer is thin compared to the radius of curvature of the wall, the pressure remains constant across the boundary layer. On the other hand, if the boundary layer thickness is comparable to the radius of curvature, the centrifugal action creates a pressure variation across the boundary layer. This leads to the centrifugal instability (Görtler instability) of the boundary layer and consequent formation of Görtler vortices. Görtler number The onset of Görtler vortices can be predicted using the dimensionless number called Görtler number (G). It is the ratio of centrifugal effects to the viscous effects in the boundary layer and is defined as : \mathrm = \frac \left( \frac \right)^ where : U_e = external velocity : \theta = momentum thickness : \nu = kinematic viscosity The viscosity of a fluid is a measure of its resistance to deformation at a ...
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Gortler
Gortler or Görtler may refer to: People *Daniel Gortler, an Israeli pianist *Katherine Walker, ''née'' Katharina Görtler, a German-American lighthouse keeper *Lukas Görtler (born 1994), a German football player *Nicolas Görtler (born 1990), a German football player Mathematics

*Görtler vortices, a concept in fluid dynamics {{disambiguation ...
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