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
1997-10-28
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
056811446
ABSTRACT:
A gas turbine engine blade includes an airfoil having first and second sides and an internal passage extending longitudinally therebetween for channeling air to cool the airfoil. Respective pluralities of first and second turbulator ribs extend inwardly from at least one of the first and second airfoil sides. Adjacent ones of second ends of the first and second ribs are staggered apart longitudinally and overlap chordally for defining a gap therebetween facing transversely for turning cooling air upon flow through the gap. The gap increases convective heat transfer enhancement for reducing cooling air requirements and improving blade creep life.
REFERENCES:
patent: 3628885 (1971-12-01), Sidenstick et al.
patent: 4180373 (1979-12-01), Moore et al.
patent: 4236870 (1980-12-01), Hucul, Jr. et al.
patent: 4257737 (1981-03-01), Andress et al.
patent: 4278400 (1981-07-01), Yamarik et al.
patent: 4416585 (1983-11-01), Abdel-Messeh
patent: 4474532 (1984-10-01), Pazder
patent: 4514144 (1985-04-01), Lee
patent: 4515526 (1985-05-01), Levengood
patent: 4775296 (1988-10-01), Schwarzmann et al.
patent: 4992026 (1991-02-01), Ohtomo et al.
patent: 5052889 (1991-10-01), Abdel-Messeh
patent: 5395212 (1995-03-01), Anzai et al.
J.C. Han et al, "Augmented Heat Transfer in Square Channels With Parallel, Crossed, and V-Shaped Angled Ribs," submitted to ASME Journal of Heat Transfer, Jun. 1990, pp. 1-23 and FIGS. 1-13.
S.D. Spring, "Improved Methods For Determining Heat Transfer," The Leading Edge, Winter 1987/1988, Contents page and pages 4-9.
Metzger-Vedula-Breen, "The Effect of Rib Angle and Length on Convection Heat Transfer in Rib-Roughened Triangular Ducts," ASME-JSME Thermal Engineering Conference vol. 3, 1987, pp. 327-333.
Metzger-Fan-Yu, "Effects of Rib Angle and Orientation on Local Heat Transfer in Square Channels with Angled Roughness Ribs", Compact Heat Exchangers, copyright 1989, pp: Title and 151-167.
Abuaf Nesim
Spring Samuel Dale
Taslim Mohammad Esmail
Carone Michael J.
General Electric Company
Hess Andrew C.
Traynham Wayne O.
Wesson Theresa M.
LandOfFree
Turbine blade having offset turbulators does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Turbine blade having offset turbulators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Turbine blade having offset turbulators will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1021403