... with experimental data obtained from coast-down tests of a high-speed spindle supported on gas lubricated bearings, operated in air and in halocarbon R245fa at various pressures. The windage losses are first computed considering state-of-the-art laminar flow loss models in the gas bearings and an experimentally...

.... The correlations are also compared with a CFD analysis made on a case extracted from the Réacteur Jules Horowitz. Inner surface Nusselt number for fully developed laminar flow through parallel plates as a function of the heat rate ratio φ For a symmetric heating (i.e. Φ = 1) ⇒ Nu 1  = Nu 0...

... 14 12 2011 bubbles elasticity flow instability hydrocarbon reservoirs laminar flow pumps rotors seals (stoppers) two-phase flow vibration control viscosity Annular (damper) seals restrict secondary leakage between stages in centrifugal pumps and compressors. The working...

... turbines laminar flow length measurement pressure velocity measurement The laminar premixed flame speed is a fundamental physical property of a combustible mixture related to mixture composition, stoichiometry, temperature, and pressure ( 1 ). For gas turbine combustion systems, the laminar...

... reactive flow combustion flames flow instability fluid oscillations functional analysis laminar flow pipe flow Reduction of pollutant emissions to meet environmental regulations has led to novel solutions in combustor design. Advanced systems use new premixed burners in which the flame...

..., a new experimental arrangement is presented in which a pulsed CH 4 jet is injected into a laminar flow of hot combustion products from a lean H 2 / air flame at atmospheric pressure. The arrangement resembles the Berkeley vitiated coflow (BVC) flame; however, those...

...Christian Eichler; Thomas Sattelmayer Premixed combustion of hydrogen-rich mixtures involves the risk of flame flashback through wall boundary layers. For laminar flow conditions, the flashback mechanism is well understood and is usually correlated by a critical velocity gradient at the wall...

... flame structure CO 2 dilution soot NO carbon compounds flames laminar flow nitrogen compounds soot 2010 American Society of Mechanical Engineers ...

... , T. , and Ruzak , Z. , 2001 , “ The Dynamics of a Laminar Flow in a Symmetric Channel With Sudden Expansion ,” J. Fluid Mech. 0022-1120 , 436 , pp. 283 – 320 . 10.1017/S0022112001004086 Chakrabarti , S. , Ray , S. , and Sarkar , A. , 2003 , “ Low Reynolds Number Flow...

...) are discussed in detail. Good agreement was found between experimental and calculated values within the investigated parameter range. 16 04 2009 13 08 2009 10 06 2010 10 06 2010 biofuel combustion flames gas mixtures gas turbines laminar flow reaction kinetics mechanism...

... by The Aerospace Corporation. The assistance of Benjamin Corbin, Alexander Barrett, and Matthew Davis (UCF) in the laboratory is appreciated. http://c3.nuigalway.ie/naturalgas2.html . 04 04 2008 22 05 2008 30 10 2009 combustion fuel gas turbines ignition laminar flow natural...

... simulation combustion flames laminar flow statistical distributions stoichiometry turbulence 15 10 2008 17 10 2008 14 07 2009 2009 American Society of Mechanical Engineers ...

... on the simulation results, the flame stabilization mechanism for lifted flames is investigated. combustion flames jets laminar flow turbulence Computed radial profiles of mean flame area density Computed radial profiles of mean progress variable rate Computed radial profiles...

... shifted toward the axis, and the centerline concentration of soot has also increased. 21 09 2007 27 08 2008 29 01 2009 diffusion finite difference methods flames heat transfer jets laminar flow oxidation Diffusion flame is one of the most commonly seen flames...

... have significant amounts of diluents. For these comparisons, the flame temperatures were maintained at similar values as that of the undiluted mixtures. 15 01 2008 16 01 2008 22 08 2008 combustion flames hydrogen laminar flow stagnation flow hydrogen laminar flame...

... shaft speeds ( 4000 rpm , 6000 rpm , 8000 rpm , and 10000 rpm ) and bearing unit loads from 0 kPa to 1034 kPa ( 150 psi ) . Laminar flow was produced for all test conditions. A finite-element algorithm was used to generate solutions to the Reynolds-equation model. Excellent agreement was found between...

... mixtures laminar flow With an emerging need to address gas turbine combustor issues such as fuel variability and fuel flexibility, and fundamental information and data regarding the combustion characteristics of commercial and alternative fuels are essential ( 1 2 ). Future generation gas turbine...

... ,” Combust. Sci. Technol. 0010-2202 , 79 , pp. 97 – 128 . Gorsky , W. G. , 1984 , in Planning of Kinetical Experiments , Nauka , Moscow , p. 241 (in Russian). 29 08 2005 15 01 2007 30 01 2008 gas turbines laminar flow flames computational fluid dynamics...

... , 303 , pp. 43 – 49 . Glassman , I. , 1996 , Combustion , Academic , San Diego , pp. 163 and 581 – 587 . 15 06 2006 05 03 2007 13 12 2007 combustion flames ignition laminar flow turbulence kernel growth flame propagation flame velocity...

...Mihai Arghir 03 01 2007 04 01 2007 seals (stoppers) confined flow laminar to turbulent transitions laminar flow turbulence surface roughness The authors are grateful for this experimental validation of the negative direct static stiffness of choked annular seals...