Atomization and Sprays, 2nd Edition by Lefebvre, Arthur Henry; McDonell, Vincent G

By Lefebvre, Arthur Henry; McDonell, Vincent G

The moment variation of this long-time bestseller presents a framework for designing and knowing sprays for a big selection of engineering purposes. The textual content includes correlations and layout instruments that may be simply understood and utilized in bearing on the layout of atomizers to the ensuing spray habit. Written to be obtainable to readers with a modest technical historical past, the emphasis is on software instead of in-depth thought. quite a few examples are supplied to function beginning issues for utilizing the data within the e-book. total, this can be a completely up-to-date variation that also keeps the sensible concentration and clarity of the unique paintings through Arthur Lefebvre.

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There is, however, one particular wavelength, λ opt, that is most favorable for drop formation. 7 (a) Jet with rotationally symmetric disturbance and (b) jet disturbance causing wave formation. 51 predicted by Rayleigh for this case. It is of interest to note that the minimum wavelength is the same for both viscous and nonviscous liquids, but the optimum wavelength is greater for viscous liquids. Weber next examined the effect of air resistance on the disintegration of jets into drops. He found that air friction shortens both the minimum wavelength and the optimum wavelength for drop formation.

Patent No. 4,189,914, 1980. Solomon, A. S. , Rupprecht, S. , Chen, L. , and Faeth, G. , Vol. 1, 1985, pp. 53–76. 14. Sovani, S. , Sojka, P. , and Lefebvre, A. , Effervescent atomization, Prog. Energy Combust. , Vol.  483–521. 15. Christensen, L. , and Steely, S. , Monodisperse atomizers for agricultural aviation applications, NACA CR-159777, February 1980. Coordinating Research Council. Handbook of aviation fuel properties, Coordinating Research Council Report 635, 2004. , Imaging in the optically dense regions of a spray: A review of developing techniques, Prog.

Ind. Eng. , The atomization of liquids: Principles and methods, Parker Hannifin Report No. ) 20 Atomization and Sprays breakup does not occur. 10. 12) D where UR is in meters per second and d in micrometers. From the data of Merrington and Richardson [9] and Hinze [7] estimated that Wecrit to be 22 for a free-falling drop. For low-viscosity liquid drops suddenly exposed to a high-velocity airstream, the critical value of the Weber number was estimated to be 13. Taylor [10] has provided an explanation for the observation that critical Weber numbers for drops subjected to a steady stream are almost twice as high as those for drops suddenly exposed to an airflow at a constant speed.

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