Vortex generating device
AssigneeAnsaldo Energia Switzerland AG
InventorsYang Yang, Andre Theuer
Life of this patent
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Abstract
Disclosed is a vortex generating device having a body, extending between a leading edge and a trailing edge. The body, in profile cross sections taken across the spanwise direction, exhibits an airfoil-shaped geometry. Each airfoil-shaped profile cross section has a camber line extending from the leading edge to the trailing edge, at least two of the camber lines exhibiting different camber angles, such that the body exhibits at least two different flow deflection angles along the spanwise extent. An imaginary trailing edge diagonal extends straight from a first spanwise end of the trailing edge to a second spanwise end of the trailing edge. When seen from the downstream viewpoint, the trailing edge crosses the imaginary trailing edge diagonal exactly once at one diagonal crossing point.
Claims14
A vortex generating device comprising:
- a body having a leading edge and a trailing edge, a streamwise direction (l) extending from the leading edge to the trailing edge, the body further exhibiting a spanwise extent extending along a spanwise direction (s);
- the body, in profile cross sections taken across the spanwise direction, exhibiting an airfoil-shaped geometry, each airfoil-shaped profile cross section having a camber line extending from the leading edge to the trailing edge, at least two of the camber lines exhibiting different camber angles, such that the body exhibits at least two different flow deflection angles along the spanwise extent;
- a first surface extending between the leading edge and the trailing edge and having airfoil-shaped profile lines on a first side of the respective camber lines and a second surface extending between the leading edge and the trailing edge, and having airfoil-shaped profiles on an opposite second side of the respective camber lines, and the first and second surface joining each other at the leading edge and at the trailing edge;
- wherein the trailing edge extends from a first spanwise end to a second spanwise end, and the trailing edge, when seen from a downstream viewpoint, includes a first section which is convexly shaped on a side of the first surface and is concavely shaped on a side of the second surface, and includes a second section which is concavely shaped on a side of the first surface and is convexly shaped on a side of the second surface;
- an imaginary trailing edge diagonal extending straight from the first spanwise end of the trailing edge to the second spanwise end of the trailing edge, wherein when seen from the downstream viewpoint, the trailing edge crosses the imaginary trailing edge diagonal exactly once at one diagonal crossing point;
- and
- wherein the trailing edge, when seen from the downstream viewpoint, comprises:
- at least two trailing edge segments which abut each other at a nonzero angle, and wherein the nonzero angle between each of the at least two trailing segments is an obtuse angle.
Dependencies are inferred from the claim text.