年間 12 号発行
ISSN 印刷: 1044-5110
ISSN オンライン: 1936-2684
Indexed in
ANALYSIS OF THE IDEAL PHASE-DOPPLER SYSTEM: LIMITATIONS IMPOSED BY THE SINGLE-PARTICLE CONSTRAINT
要約
This article explores the effects of particle statistics on the ability of a phase-Doppler system (or any single-particle diagnostic) to make accurate measurements of complex particle flows. This is accomplished by analyzing the response of an ideal phase-Doppler system to a postulated particle flux. The ideal system defined here senses particles of all sizes and velocities with perfect accuracy, but is subject to one constraint: In order for a measurement to be considered valid, there must be only one particle in the probe volume at a time. A consequence of this constraint is that the measured flux of particles is similar to the true flux, but reduced by passage through two stages of filters. The first rejects particles for insufficient spacing and is controlled by a spatial Poisson process, while the second rejects particles for excessive residence time and is driven by a temporal Poisson process. The key filter parameters are the expected values of the number of particles in the probe volume and the number of particles entering the probe region during the residence time of a previous particle. Only if these values are kept below order 10−2 can the measured joint distribution function, flux rate, and derived quantities be assumed to reflect the true nature of the flow.
-
Nakamura Sosuke, McDonell Vince, Samuelsen Scott, The Effect of Liquid-Fuel Preparation on Gas Turbine Emissions, Journal of Engineering for Gas Turbines and Power, 130, 2, 2008. Crossref
-
BRANDT M., RACHNER M., SCHMITZ G., An Experimental and Numerical Study of Kerosine Spray Evaporation in a Premix Duct for Gas Turbine Combustors at High Pressure, Combustion Science and Technology, 138, 1-6, 1998. Crossref
-
McDonell V. G., Samuelsen G. S., An Experimental Data Base for the Computational Fluid Dynamics of Reacting and Nonreacting Methanol Sprays, Journal of Fluids Engineering, 117, 1, 1995. Crossref
-
Bachalo William D., The Phase Doppler Method: Analysis, performance evaluations, and applications, Particle & Particle Systems Characterization, 11, 1, 1994. Crossref
-
Kim Jin Seok, Kim Jeong Soo, A characterization of the spray evolution by dual-mode phase doppler anemometry in an injector of liquid-propellant thruster, Journal of Mechanical Science and Technology, 23, 6, 2009. Crossref
-
Intra- and Interlaboratory Experiments to Assess Performance of Phase Doppler Interferometry, in Recent Advances in Spray Combustion: Spray Atomization and Drop Burning Phenomena, 1996. Crossref
-
Theory and Measurement of the Multipoint Statistics of Sprays, in Recent Advances in Spray Combustion: Spray Atomization and Drop Burning Phenomena, 1996. Crossref
-
Espy Ryan D., Muliadi Ariel R., Ouyang Zheng, Cooks R. Graham, Spray mechanism in paper spray ionization, International Journal of Mass Spectrometry, 325-327, 2012. Crossref
-
Dubey R.K., Black D.L., McQuay M.Q., Carvalho J.A., The effect of acoustics on an ethanol spray flame in a propane-fired pulse combustor, Combustion and Flame, 110, 1-2, 1997. Crossref
-
Bergenblock Tobias, Leckner Bo, Onofri Fabrice, Occelli René, Tadrist Lounès, Averaging of particle data from phase Doppler anemometry in unsteady two-phase flow: Validation by numerical simulation, International Journal of Multiphase Flow, 32, 2, 2006. Crossref
-
Bachalo W.D., Injection, dispersion, and combustion of liquid fuels, Symposium (International) on Combustion, 25, 1, 1994. Crossref
-
McQuay M.Q., Dubey R.K., Nazeer W.A., An experimental study on the impact of acoustics and spray quality on the emissions of CO and NO from an ethanol spray flame, Fuel, 77, 5, 1998. Crossref
-
Dubey R.K., McQuay M.Q., Carvalho J.A., An experimental and theoretical investigation on the effects of acoustics on spray combustion, Symposium (International) on Combustion, 27, 2, 1998. Crossref
-
Lee Black David, McQuay Mardson Queiroz, Bonin Michel P., Laser-based techniques for particle-size measurement: A review of sizing methods and their industrial applications, Progress in Energy and Combustion Science, 22, 3, 1996. Crossref
-
Black David Lee, McQuay Mardson Q, Laser-based particle measurements of spherical and nonspherical particles, International Journal of Multiphase Flow, 27, 8, 2001. Crossref
-
Bergenblock Tobias, Onofri Fabrice, Leckner Bo, Tadrist Lounès, Experimental estimation of particle flow fluctuations in dense unsteady two-phase flow using phase Doppler anemometry, International Journal of Multiphase Flow, 33, 8, 2007. Crossref
-
Duru P., Koch D.L., Cohen C., Experimental study of turbulence-induced coalescence in aerosols, International Journal of Multiphase Flow, 33, 9, 2007. Crossref
-
Lacava Pedro T., Carvalho João A., McQuay Mardson Q., Pulsating combustion characteristics of a spray flame in a Rijke tube with two different atomizers, Fuel, 76, 9, 1997. Crossref
-
Rahman S., Pal S., Santoro R., Rahman S., Pal S., Santoro R., Critical issues for making droplet measurements in liquid oxygen/hydrogen combusting sprays, 33rd Joint Propulsion Conference and Exhibit, 1997. Crossref
-
Benjamin Michael, Crocker D., Spray characterization of a relatively high flow simplex atomizer using experiment and CFD, 32nd Joint Propulsion Conference and Exhibit, 1996. Crossref
-
Yang Young-Joon, Akamatsu Fumiteru, Katsuki Masashi, Application of light collecting probe with high spatial resolution to spark-ignited spherical spray flames, KSME International Journal, 18, 11, 2004. Crossref
-
LI S., LIBBY P., WILLIAMS F., An experimental and theoretical study on spray structure in two-phase counterflowing streams with and without a flame, 29th Joint Propulsion Conference and Exhibit, 1993. Crossref
-
Freitag S., Experimental investigations of fuel preparation in a swirling airflow under realistic conditions without reaction in a combustor model with a point fuel source, CEAS Aeronautical Journal, 9, 3, 2018. Crossref
-
Tsushima S., Akamatsu F., Katsuki M., Application of New Light Collection Probe with High Spatial Resolution to Spark-Ignited Spherical Flames, in Laser Techniques Applied to Fluid Mechanics, 2000. Crossref
-
GHAFFARPOUR M., CHEHROUDI B., Experiments on Spray Combustion in a Gas Turbine Model Combustor, Combustion Science and Technology, 92, 1-3, 1993. Crossref
-
Bachalo W.D., Experimental methods in multiphase flows, International Journal of Multiphase Flow, 20, 1994. Crossref