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Paper presents the rheological characteristics of glycerol aqueous solutions and spray structures, droplets diameters, drop size histograms for effervescent atomizers. The study shows a nonlinear relation between the Sauter mean diameter and the gas to liquid mass flow ratio. By increasing the concentration of glycerol the solution viscosity tends also to increase. The experimental results show that the size of droplets depends on the liquid viscosity. The diameter of droplets increases with increase of liquid viscosity. Drops size histograms based on the number of drops showed the increase in number of large and the decrease in small droplets with increase of concentration of glycerol. Additionally, the characteristic stages of atomized liquid have been presented: the jet with built-in bubbles (slug flow), satellite bubbles and connected bubbles.
Rocznik
Tom
Strony
29--38
Opis fizyczny
Bibliogr. 18 poz., rys., tab.
Twórcy
autor
- Department of Chemical Engineering and Equipment, Faculty of Chemical Technology, Poznan University of Technology, pl. M. Sklodowskiej-Curie 2, 60-965 Poznan, Poland
autor
- Department of Chemical Engineering and Equipment, Faculty of Chemical Technology, Poznan University of Technology, pl. M. Sklodowskiej-Curie 2, 60-965 Poznan, Poland
autor
- Department of Chemical Engineering and Equipment, Faculty of Chemical Technology, Poznan University of Technology, pl. M. Sklodowskiej-Curie 2, 60-965 Poznan, Poland
autor
- Department of Chemical Engineering and Equipment, Faculty of Chemical Technology, Poznan University of Technology, pl. M. Sklodowskiej-Curie 2, 60-965 Poznan, Poland
Bibliografia
- [1] Lefebvre A.H.: Atomization and Sprays. Hemisphere Publishing Corporation, New York 1989.
- [2] Orzechowski Z., Prywer J.: Production and use of spray liquid. WNT, Warsaw 2008.
- [3] Petersen F.J.: A new approach for pharmaceutical sprays. Effervescent atomization. Atomizer design and spray characterization. PhD thesis, The Danish University of Pharmaceutical Sciences, Copenhagen 2004.
- [4] Petersen F.J., Worts O., Schaefer T., Sojka P.E.: Design and atomization properties for an inside-out type effervescent atomizer. Drug Dev. Ind. Pharm. 30(2004), 3, 319–326.
- [5] Lefebvre A.H.: Some recent developments in twin-fluid atomization. Part. Syst. Charact. 13(1996), 205–216.
- [6] Sovani S.D., Sojka P.E., Lefebvre A.H.: Effervescent atomization. Progr. Energy Combust. Sci. 27(2001), 483–521.
- [7] Broniarz-Press L., Ochowiak M., Woziwodzki S.: Atomization of PEO aqueous solutions in effervescent atomizers. Int. J. Heat Fluid Flow 31(2010), 651–658.
- [8] Sovani S.D., Chou E., Sojka P.E., Gore J.P., Eckerle W.A., Crofts J.D.: High pressure effervescent atomization: effect of ambient pressure on spray cone angle. Fuel 80(2001), 427–435.
- [9] Tarr Y.J., Tikk L.D., Eckerle W.A., Peters L.L.: Effervescent injector for diesel engines. US Patent 5,884,611, 1999.
- [10] Williams C.C., Goode M.G., Ramamurthy A.V.: Control of solution catalyst droplet size with an effervescent spray nozzle. US Patent 5,962,606, 1999.
- [11] Cueman M.K., Primus R.J.: System and method for effervescent fuel atomization. US Patent Application Publication, US 2004/0255873 A1, 2004.
- [12] Orzechowski Z., Prywer J.: Liquid Atomization. WNT, Warsaw 1991.
- [13] Liu H.: Science and Engineering of Droplets Fundamentals and Applications. William Andrew Publishing/Notes, New York 2000.
- [14] Crowe C.T.: Multiphase Flow Handbook. Taylor and Francis Group, Boca Raton 2006.
- [15] Chen S.K., Lefebvre A.H.: Discharge coefficients for plain-orifice effervescent atomizers. Atomization Sprays 4(1994), 275–290.
- [16] Miller R.W.: Flow Measurement Engineering Handbook. McGraw-Hill Professional, New York 1996.
- [17] Catlin C.A., Swithenbank J.: Physical processes influencing effervescent atomizer performance in the slug and annular flow regimes. Atomizat. Spray. 11(2001), 575–595.
- [18] Ramamurthi K., Sarkar U.K., Raghunandan B.N.: Performance characteristics of effervescent atomizer in different flow regimes. Atomizat. Spray. 19(2009), 1, 41–56.
Typ dokumentu
Bibliografia
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