This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Investigation of Droplet Disintegration in Diesel Spray Core by Advanced Laser 2-Focus Velocimeter
Technical Paper
2005-01-1238
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
In order to get fundamental information about the droplet disintegration in the core region of diesel fuel spray, an advanced laser 2-focus velocimeter (L2F) was used for the measurements of velocity and size of droplets. The L2F with micro-scale probe has high optical SN ratio and high spatial resolution. Measured was the fuel spray injected into the atmosphere intermittently from a single hole nozzle. The diameter of the orifice was 0.2 mm. Measurements were conducted on four planes where the axial distances were 10, 20, 30, and 40 mm respectively downstream from the orifice exit. As the injection pressure and needle valve lift change unsteadily in case of the intermittent injection spray, time change of spatial distributions of velocity and size was measured and time change of the joint probability density associated with velocity and size was examined. It is confirmed that droplets with higher velocity and larger size increase with needle valve opening and also increase with injection pressure after the needle valve opens fully. The droplets with low velocity and small size injected at early stage of injection are caught up and passed by faster droplets injected later on near the position about 30 to 40 mm downstream from the nozzle orifice exit. It is found that droplets disintegrate and decelerate simultaneously in the core region.
Recommended Content
Authors
Citation
Ueki, H., Ishida, M., and Sakaguchi, D., "Investigation of Droplet Disintegration in Diesel Spray Core by Advanced Laser 2-Focus Velocimeter," SAE Technical Paper 2005-01-1238, 2005, https://doi.org/10.4271/2005-01-1238.Also In
References
- Tatschl R. Kunsbergsarre C. Berg E. IC-Engine Spray Modeling-Status and Outlook International Multidimensional Engine Modeling User's Group Meeting at the SAE Congress 2002
- Cronhjort A. Konstanzer D. Analysis of a Diesel Spray Using a Mechanical Slicing Device SAE Paper No. 2001-01-2009 1445 1452 2001
- Wang J. Ultrafast X-radiography of High-Pressure High-Speed Fuel Sprays Proceedings of 9th Annual Conference on Liquid Atomization of Spray Systems-Asia 394 405 2004
- Abu-Gharbieh R. Persson J. Forsth M. Compensating Laser Sheet Images of Optically Dense Sprays Proceedings of the Swedish Symposium on Image Analysis SSAB 1999
- Schmidl G. Burkert A. Triebel W. A Measurement system for investigating droplet size distributions in dense kerosene sprays Proceedings of OPTO 2002 Erfurt 115 120 2002
- Wigley G. Heath J. Pitcher G. Whybrew A. Experimental Analysis of the Response of a Laser/Phase Doppler Anemometer System to a Partially Atomized Spray Part. Part. Syst. Charact. 18 169 178 2001
- Kim W.T. Mitra S.K. Li X. Prociw L.A. Hu T.C.J. A Predictive Model for the Initial Droplet Size and Comparison with Experiments Part. Part. Syst. Charact. 20 135 149 2003
- Hung C.C. Martin J.K. Koo J.Y. Injection Pressure Effects Upon Droplet Behavior in Transient Diesel Sprays SAE Paper No. 970053 168 181 1997
- Driscoll K.D. Sick V. Gray C. Simultaneous Air/Fuel-Phase PIV Measurements in a dense Fuel Spray Experiments in Fluids 18 June 2003
- Shodl R. L2FA Laser-Dual-Beam Method for Flow Measurements in Turbomachines ASME Paper No.74-GT-157 1974
- Ueki H. Ishida M. Application of Optoelectronic Devices to a Laser-2-Focus Velocimeter Fluid Measurement and Instrumentation Forum 108 ASME 1991 79 82
- Ueki H. Ishida M. Sakaguchi D. Measurement of Temperature and Velocity Fluctuations in a Turbulent Diffusion Flame by Optical Fiber Thermometer and Laser 2-Focus Velocimeter Proceedings of SPIE, Optical Technology in Fluid, Thermal, and Combustion Flow III 3172 360 369 1997
- Chaves H. Kirmse C. Obermeier F. Velocity Measurements of Dense Diesel Sprays in Pressurized Air Proceedings of Spray 2001 TU Hamburg-Harburg II.2-1 II.2-8 2001
- Ueki H. Ishida M. Sakaguchi D. Naganuma M. Measurements of Velocity and Size of Diesel Fuel Spray near Nozzle Orifice by Semiconductor Laser 2-Focus Velocimeter Proceedings of 9th Annual Conference on Liquid Atomization and Spray Systems-Asia 19 26 2003
- Ueki H. Ishida M. Sakaguchi D. Naganuma M. Simultaneous Measurements of Velocity and Size of Diesel Fuel Droplet near Nozzle Orifice by Laser 2-Focus Velocimeter with Micro-Scale Probe Volume Proc. Thermo- and fluid dynamic processes in Diesel Engines 369 380 2004
- Ishida M. Sakaguchi D. Ueki H. Incipient Rotating Stall Characteristics Measured by Semiconductor L2F and Pressure Transducer in Vaneless Diffuser of Centrifugal Blowers ASME Paper No.2000-GT-467 1 10 2000
- Ueki H. Ishida M. Sakaguchi D. Simultaneous Measurement of Particle Size and Velocity by Laser 2-Focus Particle Analyzer Proceedings of ICLASS 94 483 490 1994
- Simmons M. J. H. Langston P. A. Burbidge A. S. A.S. Particle and droplet analysis from chord distributions Powder Tech-noloby 102 75 83 1999
- Sakaguchi D. Ueki H. Ishida M. Improvement of SN Ratio by Time-Scattering Measurement in Laser 2-Focus Velocimeter Proceedings of the 2nd Joint ASME/JSME Fluid Engineering Conference 211 137 142 1995
- Blessing M. Konig G. Kruger C. Michels U. Schwarz V. Analysis of Flow and Cavitation Phenomena in Diesel Injection Nozzles and Its Effects on Spray and Mixture Formation SAE Paper No. 2003-01-1358 1694 1706 2003