Aspherical dimples for heat transfer surfaces and method

Details Aspherical dimples for heat transfer surfaces and method Aspherical dimples for heat transfer surfaces and method

F - Mech Eng,Light,Heat,Weapons

28

F

F28F 13/02 (2006.01) F01D 5/18 (2006.01) F01D 25/12 (2006.01) F02C 7/12 (2006.01) F15D 1/06 (2006.01) F15D 1/12 (2006.01)

Patent

CA 2583126

A dimple (30) for use on a heat transfer surface (20) exposed to a flowing gas, for use for example in a gas turbine engine (10), the dimple (30) having an aspherical shape. The dimple (30) may also be shaped as a segment of a torus, a double wedge, and have a flat bottom surface. The ratio of the dimple maximum depth to maximum diameter is less than 0.2 and may be equal to 0.1.

L'invention concerne une alvéole (30) de forme asphérique destinée à être utilisée sur une surface de transfert de chaleur (20) exposée à un écoulement gazeux, destinée à être utilisée, par exemple, dans une turbine à gaz (10). Cette alvéole (30) peut également se présenter sous la forme d'un segment de torus, d'une double cale et présenter une surface à fond plat. Le ratio entre la profondeur maximale de l'alvéole et le diamètre maximal est inférieur à 0,2 et peut être égal à 0,1.

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