Ullmann's Encyclopedia of Industrial Chemistry 2010
DOI: 10.1002/14356007.b02_06.pub2
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Spraying and Atomizing of Liquids

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Cited by 14 publications
(12 citation statements)
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References 136 publications
(103 reference statements)
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“…From the literature on pressure swirl atomization it is known that spray droplets are generated due to the high relative velocity between the liquid and the gas outside of the atomizer. The liquid leaves the atomizer as a conical sheet and disintegrates into spray droplets by Kelvin-Helmholtz instabilities or by turbulence (Walzel, 2003). In the case of oil droplets, laminar shear stresses inside the atomizer, and specifically in the thin liquid film before the atomizer outlet, are expected to dominate the droplet breakup.…”
Section: Spray Droplet Sizementioning
confidence: 99%
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“…From the literature on pressure swirl atomization it is known that spray droplets are generated due to the high relative velocity between the liquid and the gas outside of the atomizer. The liquid leaves the atomizer as a conical sheet and disintegrates into spray droplets by Kelvin-Helmholtz instabilities or by turbulence (Walzel, 2003). In the case of oil droplets, laminar shear stresses inside the atomizer, and specifically in the thin liquid film before the atomizer outlet, are expected to dominate the droplet breakup.…”
Section: Spray Droplet Sizementioning
confidence: 99%
“…The atomization principle of pressure swirl atomizers is based on the conversion of pressure to kinetic energy. In this type of atomizers the liquid flows through tangential holes or slots into a swirl chamber, and then to a discharge orifice (Walzel, 2003). Due to swirling motion of the liquid, an air core is created that extends from the rear of the swirl chamber to the discharge orifice.…”
Section: Introductionmentioning
confidence: 99%
“…The dispersion of liquid due to the impact of a gas jet in a pneumatic nozzle occurred when the dynamic pressure of the gas exceeded the internal pressure of the droplets formed. In [37], it was established that the breakup of liquid started in the range 8 < We < 10. The minimum required gas velocity in the nozzle can be computed from this condition, given the properties of the liquid.…”
Section: Gsa Of the Spray Drying Processmentioning
confidence: 99%
“…An empirical relation for this nozzle is given in Equation (41). This relation relates the droplet size to: (i) the nozzle diameter (d n ), (ii) pressure drop (∆p), (iii) fluid properties via the Reynolds number (Re p ), (iv) and the density ratio [37].…”
Section: Gsa Of the Spray Drying Processmentioning
confidence: 99%
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