Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Patent
1983-11-07
1985-04-30
Yuen, Henry C.
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
416 97R, F01D 518
Patent
active
045141444
ABSTRACT:
A turbomachinery airfoil with at least one internal cooling passage is disclosed. The passage has a pair of opposite walls with turbulence promoters, such as ribs or pin arrays, integral therewith. The ribs/pin arrays are angled with respect to the center line of their respective wall and ribs/pin arrays on opposite walls are angled with respect to each other. At least one gap is provided in each rib to provide a flow path for dust which might otherwise collect behind each rib.
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Int. J. Heat Mass Transfer, by J. C. Han, L. R. Glicksman & W. Rohsenow, vol. 21 (1978) pp. 1143-1155, An Investigation of Heat Transfer and Friction for Rib-Roughened Surfaces.
Int. J. Heat Mass Transfer, by D. L. Gee & R. L. Webb, vol. 23 (1980), pp. 1127-1136, Forced Convection Heat Transfer in Helically Rib-Roughened Tubes.
Foote Douglas S.
General Electric Company
Kwon John
Lawrence Derek P.
Yuen Henry C.
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