Publication de 12 numéros par an
ISSN Imprimer: 1044-5110
ISSN En ligne: 1936-2684
Indexed in
EFFECT OF INTERNAL GEOMETRY OF THE PRESSURE-SWIRL DUPLEX NOZZLE ON THE ATOMIZATION CHARACTERISTICS OF JET A-1 FUEL
RÉSUMÉ
The objective of this study was to investigate the effects of the geometric parameters of a pressure-swirl duplex nozzle (dual orifice) on the spray characteristics of Jet A-1 fuel. Two pilot nozzles with different shapes and two main nozzles with different shapes were tested. The spray characteristics were analyzed by employing laser diagnostic techniques, namely a phase Doppler particle analyzer (PDPA) and planer laser sheet imaging. Atomizer performance including flowrate, discharge coefficient, spray structure, resulting droplet size, and velocity distribution were analyzed. The results compared the atomization characteristics under various injection conditions and nozzle geometry that showed considerable major alteration in spray characteristics. This type of atomizers is mainly used as fuel injectors in gas turbine combustors. Hence, the results could be of interest to the combustion society, although this research is entirely cold flow.
-
Amini, G., Liquid Flow in a Simplex Swirl Nozzle, Int. J. Multiphase Flow, vol. 79, pp. 225-235,2016. Ashgriz, N., Handbook of Atomization and Sprays: Theory and Applications, Boston, MA: Springer, 2011.
-
Ateshkadi, A., McDonell, V., and Samuelsen, G., Effect of Hardware Geometry on Gas and Drop Behavior in a Radial Mixer Spray, Symp. (Int.) Combust., vol. 27, no. 2, pp. 1985-1992,1998.
-
Ballester, J. and Dopazo, C., Discharge Coefficient and Spray Angle Measurements for Small Pressure-Swirl Nozzles, Atomiz. Sprays, vol. 4, no. 3, pp. 351-367,1994.
-
Chen, S., Lefebvre, A., and Rollbuhler, J., Influence of Geometric Features on the Performance of Pressure-Swirl Atomizers, J. Eng. Gas Turbines Power, vol. 112, no. 4, pp. 579-584,1990.
-
Chen, S., Lefebvre, A., and Rollbuhler, J., Factors Influencing the Effective Spray Cone Angle of Pressure-Swirl Atomizers, J. Eng. Gas Turbines Power, vol. 114, no. 1, pp. 97-103,1992.
-
Chin, J.S., Nickolaus, D., and Lefebvre, A.H., Influence of Downstream Distance on the Spray Character-istics of Pressure-Swirl Atomizers, J. Eng. Gas Turbines Power, vol. 108, no. 1, pp. 219-224,1986.
-
Chu, C.-C., Chou, S.-F., Lin, H.-I., and Liann, Y.-H., An Experimental Investigation of Swirl Atomizer Sprays, Heat Mass Transf., vol. 45, no. 1, pp. 11-22,2008.
-
Couto, H., Carvalho, J., and Bastos-Netto, D., Theoretical Formulation for Sauter Mean Diameter of Pressure-Swirl Atomizers, J. Propuls. Power, vol. 13, no. 5, pp. 691-696,1997.
-
Dafsari, R.A., Lee, H.J., Han, J., Park, D.-C., and Lee, J., Viscosity Effect on the Pressure Swirl Atomization of an Alternative Aviation Fuel, Fuel, vol. 240, pp. 179-191,2019a.
-
Dafsari, R.A., Vashahi, F., Chandrahasan, R., and Lee, J., Effect of Aviation Fuel Temperature on Refractive Index in Droplet Size Measurement Using Phase Doppler Anemometry, Measurement Sci. Technol, vol. 30, no. 7, p. 075203,2019b.
-
Dafsari, R.A., Vashahi, F., and Lee, J., Effect of Swirl Chamber Length on the Atomization Characteristics of a Pressure-Swirl Nozzle, Atomization and Sprays, vol. 27, no. 10, pp. 1-16,2017.
-
Dantec-Dynamics, LDA and PDA Reference Manual, Denmark, 2011.
-
Dash, S.K., Halder, M.R., Peric, M., and Som, S.K., Formation of Air Core in Nozzles with Tangential Entry, J. Fluids Eng., vol. 123, no. 4, pp. 829-835,2001.
-
Gad, H.M., Ibrahim, I.A., Abdel-Baky, M.E., Abd El-Samed, A.K., and Farag, T.M., Experimental Study ofDiesel Fuel Atomization Performance of Air Blast Atomizer, Exp. Therm. Fluid Sci., vol. 99, pp. 211-218,2018.
-
Halder, M., Dash, S., and Som, S., Initiation of Air Core in a Simplex Nozzle and the Effects of Operating and Geometrical Parameters on Its Shape and Size, Exp. Therm. Fluid Sci., vol. 26, no. 8, pp. 871-878, 2002.
-
Jedelsky, J. and Jicha, M., Energy Considerations in Spraying Process of a Spill-Return Pressure-Swirl Atomizer, Appl. Energy, vol. 132, pp. 485-495,2014.
-
Ksapabutr, B., Panapoy, M., Choncharoen, K., Wongkasemjit, S., and Traversa, E., Investigation of Nozzle Shape Effect on Sm0.1Ce0.9O1.95 Thin Film Prepared by Electrostatic Spray Deposition, Thin Solid Films, vol. 516, no. 16, pp. 5618-5624,2008.
-
Lee, C.S. and Park, S.W., An Experimental and Numerical Study on Fuel Atomization Characteristics of High-Pressure Diesel Injection Sprays, Fuel, vol. 81, no. 18, pp. 2417-2423,2002.
-
Lefebvre, A. and Wang, X., Mean Drop Sizes from Pressure-Swirl Nozzles, J. Propuls. Power, vol. 3, no. 1, pp. 11-18,1987.
-
Lefebvre, A.H., Fifty Years of Gas Turbine Fuel Injection, Atomization Sprays, vol. 10, nos. 3-5, pp. 251-276, 2000.
-
Lefebvre, A.H. and Ballad, D.R., Gas Turbine Combustion, Boca Raton, FL: CRC Press, 2010.
-
Lefebvre, A.H. and McDonell, V.G., Atomization and Spray, Boca Raton, FL: CRC Press, 2017.
-
Li, T., Nishida, K., and Hiroyasu, H., Droplet Size Distribution and Evaporation Characteristics of Fuel Spray by a Swirl Type Atomizer, Fuel, vol. 90, no. 7, pp. 2367-2376,2011.
-
Michaelides,E., Crowe, C.T., and Schwarzkopf, J.D., Multiphase Flow Handbook, Boca Raton: CRC Press, 2016.
-
Moon, S., Bae, C., Abo-Serie, E.F., and Choi, J., Internal and Near-Nozzle Flow of a Pressure-Swirl Atomizer under Varied Fuel Temperature, Atomiz. Sprays, vol. 17, no. 6, pp. 529-550,2007.
-
Park, B.S., Kim, H.Y., and Yoon, S.S., Transitional Instability of a Pressure-Swirl Atomizer due to Air-Core Eruption at Low Temperature, Atomiz. Sprays, vol. 17, no. 6, pp. 551-568,2007.
-
Payri, R., Araneo, L., Shakal, J., and Soare, V., Phase DopplerMeasurements: System Set-Up Optimization for Characterization of a Diesel Nozzle, J. Mech. Sci. Technol., vol. 22, no. 8, pp. 1620-1632,2008.
-
Pitcher, G., Wigley, G., and Saffman, M., Sensitivity of Dropsize Measurements by Phase Doppler Anemometry to Refractive Index Changes in Combusting Fuel Sprays, in Applications of Laser Techniques to Fluid Mechanics, R.J. Adrian, D.F.G. Durao, F. Durst, M. Maeda, and J. Whitelaw, Eds., Berlin-Heidelberg, Germany: Springer, pp. 227-247, 1991.
-
Ralf, K. and Najera, S.B., Operation Conditions of a Phase Doppler Anemometer: Droplet Size Mea-surements with Laser Beam Power, Photomultiplier Voltage, Signal Gain and Signal-to-Noise Ratio as Parameters, Measure. Sci. Technol., vol. 17, no. 1, p. 221,2006.
-
Rashad, M., Yong, H., and Zekun, Z., Effect of Geometric Parameters on Spray Characteristics of Pressure Swirl Atomizers, Int. J. Hydrogen Energy, vol. 41, no. 35, pp. 15790-15799,2016.
-
Resagk, C., Du Puits, R., and Thess, A., Error Estimation of Laser-Doppler Anemometry Measurements in Fluids with Spatial Inhomogeneities of the Refractive Index, Exp. Fluids, vol. 35, no. 4, pp. 357-363, 2003.
-
Ruger, M., Hohmann, S., Sommerfeld, M., and Kohnen, G., Euler/Lagrange Calculations of Turbulent Sprays: The Effect of Droplet Collisions and Coalescence, Atomization Sprays, vol. 10, no. 1, 2000.
-
Saikalis, G., Saikalis, G., Byers, R., and Nogi, T., Study on Air Assist Fuel Injector Atomization and Effects on Exhaust Emission Reduction, SAE Transact., vol. 102, pp. 440-447,1993.
-
Seidu, I., Analytical and Numerical Validation of Nozzle Spray Measurement Data Obtained from a Newly Developed Production System, PhD, Cleveland State University, 2015.
-
Vashahi, F. and Lee, J.K., Insight into the Dynamics of Internal and External Flow Fields of the Pressure Swirl Nozzle, Atomization Sprays, vol. 28, no. 11, pp. 1001-1028,2018.
-
Wang, X. and Lefebvre, A., Influence of Ambient Air Pressure on Pressure-Swirl Atomization, ASME1987 International Gas Turbine Conference and Exhibition, 1987.
-
Wei, X. and Yong, H., Improved Semiempirical Correlation to Predict Sauter Mean Diameter for Pressure-Swirl Atomizers, J. Propuls. Power, vol. 30, no. 6, pp. 1628-1635,2014.
-
Gad H.M., Baraya E.A., Farag T.M., Ibrahim I.A., Effect of geometric parameters on spray characteristics of air assisted pressure swirl atomizer, Alexandria Engineering Journal, 61, 7, 2022. Crossref