Publication de 12 numéros par an
ISSN Imprimer: 1044-5110
ISSN En ligne: 1936-2684
Indexed in
NONLINEAR SIMULATION OF A HIGH-SPEED, VISCOUS LIQUID JET
RÉSUMÉ
A model has been developed to simulate the nonlinear, unsteady evolution of a high-speed viscous liquid jet issuing from a circular orifice. The model is based on a zonal approach in which an integral method is utilized for a thin viscous region at the jet periphery, while a boundary-element method is used for the inviscid "core" flow. Results indicate that steady-state solutions are possible neglecting the presence of the gas. Under these conditions, the jet "swells" in diameter and the boundary layer thins to a shear layer over a length of about half an orifice radius. Because boundary-layer relaxation is occurring during these simulations in which steady-state solutions appear, atomization mechanisms relying on this process cannot explain the observed behavior. The swelling phenomenon has the potential to explain several fundamental experimental atomization observations regarding turbulence and orifice design.
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Park Hongbok, Heister Stephen D., Nonlinear simulation of free surfaces and atomization in pressure swirl atomizers, Physics of Fluids, 18, 5, 2006. Crossref
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Sirignano W.A, Mehring C, Review of theory of distortion and disintegration of liquid streams, Progress in Energy and Combustion Science, 26, 4-6, 2000. Crossref
-
Park Ki Sun, Heister Stephen D., Nonlinear modeling of drop size distributions produced by pressure-swirl atomizers, International Journal of Multiphase Flow, 36, 1, 2010. Crossref
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Ahmed M., Youssef M., Abou-Al-Sood M., Two-dimensional modeling of viscous liquid jet breakup, Acta Mechanica, 224, 3, 2013. Crossref
-
Distortion and Disintegration of Liquid Streams, in Liquid Rocket Thrust Chambers, 2004. Crossref
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Heister S., Modeling primary atomization processes, 34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 1998. Crossref
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Ibrahim Essam, Kenny Robert, Walker Nathan, A Computational and Experimental Investigation of Shear Coaxial Jet Atomization, 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2006. Crossref
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Heister S. D., Plain Orifice Spray Nozzles, in Handbook of Atomization and Sprays, 2011. Crossref
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Chandra Budi, Collicott Steven, Low Gravity Propellant Slosh Prediction Using Surface Evolver, 38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2002. Crossref
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Popp Michael, Hulka James, Yang Vigor, Habiballah Mohammed, Liquid Rocket Thrust Chambers, 2004. Crossref