... Φ min from the effectiveness data for RI or EI ingress. engines orifices (mechanical) swirling flow turbines The orifice equations for swirling flow developed by Owen ( 1 2 ) were applied to the case of externally induced (EI) ingress in Part I ( 3 ) of this two-part paper...

... compressible flow confined flow gas turbines orifices (mechanical) swirling flow Even when the external flow is axisymmetric, so that there is no circumferential variation in external pressure, ingress can still occur. The reason for this is that the rotating fluid in the wheel-space creates...

.... A. , and Johnson , B. V. , 1987 , “ Disk Pumping Test, Final Report ,” Air Force Wright Aeronautical Laboratories Report No. AFWAL-TR-87- 2050. 23 07 2009 10 08 2009 12 11 2010 12 11 2010 compressible flow gas turbines orifices (mechanical) seals (stoppers) swirling flow...

... gas turbines jet engines orifices (mechanical) In order to meet challenging efficiency targets, modern aircraft gas turbines are designed to operate with main gas path turbine temperatures exceeding the fatigue limit of some of the components. Therefore, colder air is bled from...

... numerical analysis orifices (mechanical) pressure measurement seals (stoppers) wakes In the state-of-the-art aircraft and electric power generation gas turbine engines, the high-pressure turbine disks are purged with coolant air through the wheel space. This air reduces the thermal load...

... orifices (mechanical) cooling temperature measurement thermocouples infrared imaging 27 10 2004 28 04 2005 Goldstein , R. J. , Eckert , E. R. G. , and Burggraf , F. , 1974 , “ Effects of Hole Geometry and Density on Three-Dimensional Film Cooling ,” Int. J. Heat...

... of the orifices were assumed uniform. In this work, an approach employing Green’s functions is presented, which allows one to extend the applicability of the original model. rotors micromechanical devices machine bearings turbomachinery hydrostatics orifices (mechanical) Green's function methods...

... jets ducts orifices (mechanical) convection cooling gas turbines pipe flow The continuing pursuit of high inlet temperature in gas turbines requires highly sophisticated cooling techniques to maintain the metal temperatures below acceptable limits. Jet impingement is one of the most...