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Atomization and Sprays

Publicou 12 edições por ano

ISSN Imprimir: 1044-5110

ISSN On-line: 1936-2684

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Indexed in

ON THE PRIMARY ATOMIZATION OF NON-NEWTONIAN IMPINGING JETS: VOLUME I EXPERIMENTAL INVESTIGATION

Volume 24, Edição 5, 2014, pp. 431-465
DOI: 10.1615/AtomizSpr.2014008676
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RESUMO

The effect of liquid rheology on the flowfield resulting from non-Newtonian impinging jets was investigated experimentally. Experimental data were acquired using a unique facility developed to examine the jet impingement of non-Newtonian liquids. Prior to jet impingement, the rheological properties of hydroxypropylcellulose, Kappa carrageenan, Agar, and several carboxymethylcellulose water-based mixtures were obtained. All investigated mixtures exhibited pseudoplastic behavior. Sheet breakup length and drop size were measured from high-speed video images at various nozzle geometric and flow parameters. Results indicate that viscosity, as a function of shear rate, is not the sole factor that determines atomization likelihood. Instead, a key role is played between the interaction of gelling agent and solvent at the molecular level.

CITADO POR
  1. Rodrigues N. S., Kulkarni V., Gao J., Chen J., Sojka P. E., An experimental and theoretical investigation of spray characteristics of impinging jets in impact wave regime, Experiments in Fluids, 56, 3, 2015. Crossref

  2. Collins Patrick W., Mallory Jennifer, An Experimental Investigation of Sheet Velocity and Jet Diameter Assumptions of Non-Newtonian Impinging Jets, 51st AIAA/SAE/ASEE Joint Propulsion Conference, 2015. Crossref

  3. Rodrigues Neil S., Kulkarni Varun, Gao Jian, Chen Jun, Sojka Paul E., Spray formation and atomization characteristics of non-Newtonian impinging jets at high Carreau numbers, International Journal of Multiphase Flow, 106, 2018. Crossref

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