Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Patent
1991-12-17
1997-12-09
Carone, Michael J.
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
416 96A, 415115, F01D 518
Patent
active
056953224
ABSTRACT:
A turbine blade includes an airfoil having first and second opposite sides and an internal passage extending longitudinally therebetween for channeling air to cool the airfoil. A single restart turbulator rib is disposed in the passage adjacent to the inlet and has a first height e.sub.1 for obtaining a first convective heat transfer enhancement. A plurality of primary turbulator ribs are disposed downstream from the restart rib in the passage. The primary ribs include an initial primary rib having a second height e.sub.2 for obtaining a second convective heat transfer enhancement, with the initial primary rib being spaced longitudinally from the restart rib at a first spacing S.sub.1, and spaced longitudinally from a second primary rib at a second spacing S.sub.2. The first enhancement is less than the second enhancement to reduce overcooling of the airfoil between the restart and primary ribs.
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Jacobson Craig Robert
Lampes Elias Harry
Manning Robert Francis
Carone Michael J.
General Electric Company
Hess Andrew C.
Traynham Wayne O.
Wesson Theresa M.
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