... measurement particle image velocimetry (PIV) cooling flow measurement heat transfer pipe flow turbomachinery turbulence vortices 2012 American Society of Mechanical Engineers ...

...-Stokes equations pipe flow turbines Nowadays, in the aero-engine industry, there is an increasing demand for even higher performance and drastic reduction in engine weight while meeting the safety and reliability requirements. In order to achieve higher efficiency, typical engine operating...

..., with a small initial deceleration followed by a large acceleration and then a small deceleration. aerospace engines compressors flow separation geometry optimisation pipe flow 01 09 2008 17 12 2008 17 09 2009 A area C p static pressure...

... question that is raised herein is about the flow regime in the vent pipe. The investigation of flow regimes in oil pipes was recently carried out in the ATOS program ( 4 ) and the method was applied here as well. For the vent pipe flow the Hewitt and Roberts ( 8 ) charts were used whereas for the scavenge...

... Mechanics of Internal Flow , G. Sovran , ed., Elsevier , New York . 22 08 2008 01 10 2008 06 07 2009 pipe flow transonic flow turbines To shorten the intermediate turbine duct length and thus the engine length, a so called integrated concept (IC) has been...

..., which is most appropriate for flow measurements. The design procedures necessary to achieve a desired flow condition are discussed. 09 12 2006 26 07 2008 02 04 2009 blades flow simulation heat conduction numerical analysis pipe flow turbines Large-scale efforts...

... , S. K. , 2005 , “ Numerical Analysis of Geometric Effects on Pressure Drop in 180° Turning Channels ,” Solar Turbines Internal Report. 13 08 2007 05 05 2008 29 01 2009 blades flow separation Navier-Stokes equations pipe flow turbines turbulence vortices...

... to the blade, and is then directed to the film cooling holes for surface cooling. cooling ducts pipe flow turbulence gas turbines 02 08 2006 04 08 2006 2007 American Society of Mechanical Engineers ...

..., Z ∕ Dh = 0 corresponds to inner surface at location P5, and Z ∕ Dh = 1 corresponds to outer surface at location P5. 05 05 2004 24 05 2005 rotational flow pipe flow channel flow blades turbines turbulence Coriolis force ducts cooling...

... instability nozzles stators flow visualisation computational fluid dynamics aerodynamics pipe flow aerospace engines High cycle fatigue (HCF) of turbomachinery components is an important area of concern in the design and development of aircraft engines. The fundamental...

.... heat transfer temperature distribution pressure measurement temperature measurement turbulent diffusion pipe flow The production of turbulence in pin arrays is known to be responsible for enhancing heat transfer rates on pins and endwalls. Simoneau and Van Fossen 8 acquired turbulence...

... 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...

... 20%, resulting in a trade-off between pressure drop and heat transfer. 01 10 2004 01 02 2005 flow simulation ducts gas turbines blades pipe flow friction turbulence flow separation vortices cooling Flow inside cooling ducts in gas turbine blades is highly turbulent...

... Division, May 21, 2004; revised manuscript received, May 27, 2004. Editor: D. Wisler. 21 May 2004 27 May 2004 29 12 2004 compressors surge protection fluctuations flow instability pipe flow In light of recent attempts to increase the stability margin of a compressor...

.... Strazisar. 13 June 2004 01 October 2003 01 March 2004 29 12 2004 flow simulation heat transfer rotational flow pipe flow turbulence Coriolis force Since their introduction shortly before World War II, gas turbine engines have replaced reciprocating engines...

... are protected by effusion film cooling. The impingement/effusion cooling technique has been investigated and developed by some researchers since 1980’s. heat transfer mass transfer effusion pipe flow channel flow jets turbines 13 June 2004 01 October 2003 01 March 2004 29...

... of rotation on the leading wall. However, beyond Ro = 0.12 , the Nusselt number ratio increases with rotation due to the importance of centrifugal-buoyancy at high rotation. 19 09 2003 07 12 2004 pipe flow heat transfer rotational flow flow simulation Navier-Stokes equations boundary...

... on rig, or even full-scale engine testing. Clearly an analytical model of the form described in 2 could be of great use in defining design criteria at an early stage. acoustic resonance pipe flow aeroacoustics rotational flow rotors stators 01 April 2003 01 February 2004...

... were mainly emphasized on the heat transfer outcome without complementary flow dynamic investigations. The reason is partly that measuring fluid flow in a rotating coolant duct is a challenging. computational fluid dynamics velocity measurement pipe flow laser velocimetry Doppler...

.... This fact motivates the complementary investigations of flow field and pressure distribution in the present study. flow measurement pressure measurement pipe flow blades Doppler measurement laser velocimetry computational fluid dynamics heat transfer friction 01 10 2003 01 03...