...-stabilizing ignition kernels occurred. Non-stabilizing kernels were located only downstream of the blue line. Axial mean and axial rms velocities measured at the z = 0 mm and z = −7 mm planes for H 2 /NG/N 2  = 74/4/22 vol. % (J = 1.5) and H 2 /NG/N 2  = 62/8/30 vol. % (J = 3.5), normalized by u BL-H 2...

.... The correction method uses a statistical strain rate model to account for the turbulence influence. The strain rate model is evaluated with time-resolved velocity measurements of the turbulent flow. Additionally, one-dimensional simulations of strained counterflow flames are performed to consider the nonlinear...

... 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...

... combinations of fuel and swirl jet as far as the present geometry of acoustic excitation is concerned. 10 08 2009 20 04 2010 20 08 2010 20 08 2010 Doppler measurement flames jets laser velocimeters Mie scattering velocity measurement vortices wakes reacting...

... of statistical homogeneity and PIV data should be comparable to the PLIF data with only a small bias. 21 05 2009 03 06 2009 18 06 2010 18 06 2010 flow visualisation fluorescence spectroscopy internal combustion engines turbulence velocity measurement The mixing...

... under Grant No. G1999022303 is gratefully acknowledged. 08 04 2009 28 04 2009 04 03 2010 04 03 2010 combustion flames flow instability flow simulation flow visualisation turbulence velocity measurement large eddy simulation bluff-body nonpremixed combustion...

... dynamics diameter measurement drops fuel systems jets Mach number orifices (mechanical) shear flow sprays velocity measurement vortices Since cross flow fuel injection is widely used in gas turbine engines combustors, it is important to understand the mechanisms that control the spray...

... accelerometers combustion diesel engines mountings power transmission (mechanical) torque torque control torsion velocity measurement vibration measurement Most engine control systems nowadays are torque based, meaning that ignition, injection, and all the control parameters are set...

... voltage of a constant current spark and the freestream velocity if the velocity falls within certain limits. The engine tests revealed a great deal of cycle-to-cycle variation in the in-cylinder velocity measurements. Instances where the spark restrikes occur during the cycle must also be recognized...

... in the nozzle vicinity and a dominant external recirculation zone. The examination of the probability density function of the velocity measurements was also found to be a very useful tool in terms of the analysis of the turbulence structure of the flow. The bimodal distribution in the shear layer between...

... (LDV) for velocity measurements, OH * chemiluminescence yielding information about the heat release and pointwise laser Raman scattering for the determination of joint probability density functions (PDFs) of the major species concentrations, temperature, and mixture fraction. Each of these techniques...

... 2005 30 07 2006 velocimeters steam turbines vortices velocity measurement flow separation blades exhaust systems exhaust hood low-pressure steam turbine PIV The exhaust hood of a low-pressure steam turbine transforms the kinetic energy to potential energy and guides...

... in close agreement with PIV measurements. 24 02 2004 16 07 2005 turbulence internal combustion engines heat transfer velocity measurement combustion mass transfer velocimeters flow measurement The main geometric features of the combustion chamber are defined as bowl...

... combustion instabilities were studied by a variety of phase-resolved laser-based diagnostic techniques, locked to the frequency of the dominant pressure oscillation. Measurement techniques used were LDV for velocity measurements, planar laser-induced fluorescence for imaging of CH and OH radicals, and laser...

...Paul O. Hedman; Thomas H. Fletcher; Daniel V. Flores; Stewart G. Graham; Jason K. Haslam; Robert L. Murray; G. Wayne Timothy Instantaneous planar laser induced fluorescence (PLIF) images of OH, simultaneous axial/radial and axial/tangential velocity measurements with an LDA (laser Doppler...

..., Re ϕ , between 4 × 10 5 and 3.2 × 10 6 . Velocity measurements inside the rotating cavity were made using laser Doppler anemometry, and temperatures and heat flux measurements on the heated disk were made using thermocouples and fluxmeters. The velocity measurements were consistent with a three...

... torque velocity measurement The great interest of industry and research centers on the crankshaft instantaneous speed analysis for the misfire detection and torque estimation in internal combustion engines is due to the positive results obtained using different approaches based on this signal...

...: D. Assanis. 06 June 2000 15 November 2000 flames combustion gas mixtures chemically reactive flow velocity measurement flow measurement turbulence modelling Accurate turbulent flame speed models are required for improved design of combustion equipment...

... combustion gas mixtures chemically reactive flow laminar flow velocity measurement flow simulation temperature distribution high-pressure effects high-temperature effects modelling The laminar burning velocity is one of the fundamental properties of fuel/air mixtures. It is used for modeling...

... by the ASME Headquarters June 8, 2000. Technical Editor: D. Assanis. 02 March 2000 08 June 2000 internal combustion engines turbulence laser Doppler anemometry flow measurement velocity measurement The study of gas motion within the engine cylinder has received continuous...