年間 12 号発行
ISSN 印刷: 1044-5110
ISSN オンライン: 1936-2684
Indexed in
QUANTIFYING AIR ATOMIZATION OF VISCOELASTIC FLUIDS THROUGH FLUID RELAXATION TIMES
要約
The industrial need to control the atomization of non-Newtonian fluids necessitates an understanding of the influence of fluid rheology and different viscoelastic properties on this complex process. Previous studies of atomization of a pertinent class of non-Newtonian fluidspolymer solutionsprovide a wealth of qualitative observations of the effects of viscoelasticity but are often hindered by the inability to decouple different types of non-Newtonian behavior. Here we use a series of well-characterized polymer solutions whose non-Newtonian behavior are dominated by extensional hardening and utilize a fluid relaxation time τthe key viscoelastic parameter characterizing the onset of extensional hardeningto quantify the atomization process. The model fluids are sprayed via an air atomizer, and the drop size distributions are measured using a diffraction-based size analyzer. The atomization study shows that viscoelasticity increases the mean drop diameter and broadens the size distribution. We incorporate fluid relaxation time into a drop size correlation that predicts the Sauter mean diameter.
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Batarseh Feras Z., Gnirß Markus, Roisman Ilia V., Tropea Cameron, Fluctuations of a spray generated by an airblast atomizer, Experiments in Fluids, 46, 6, 2009. Crossref
-
Matos Marvi A., Cicerone Marcus T., Alternating current electric field effects on neural stem cell viability and differentiation, Biotechnology Progress, 26, 3, 2010. Crossref
-
Lee Wingki, Walker Lynn M., Anna Shelley L., Competition Between Viscoelasticity and Surfactant Dynamics in Flow Focusing Microfluidics, Macromolecular Materials and Engineering, 296, 3-4, 2011. Crossref
-
Zhao Hui, Hou Yan-Bing, Liu Hai-Feng, Tian Xiu-Shan, Xu Jian-Liang, Li Wei-Feng, Liu Yi, Wu Fu-Yu, Zhang Jie, Lin Kuang-Fei, Influence of rheological properties on air-blast atomization of coal water slurry, Journal of Non-Newtonian Fluid Mechanics, 211, 2014. Crossref
-
Sharma Vivek, Haward Simon J., Serdy James, Keshavarz Bavand, Soderlund Asa, Threlfall-Holmes Phil, McKinley Gareth H., The rheology of aqueous solutions of ethyl hydroxy-ethyl cellulose (EHEC) and its hydrophobically modified analogue (hmEHEC): extensional flow response in capillary break-up, jetting (ROJER) and in a cross-slot extensional rheometer, Soft Matter, 11, 16, 2015. Crossref
-
Keshavarz Bavand, Sharma Vivek, Houze Eric C., Koerner Michael R., Moore John R., Cotts Patricia M., Threlfall-Holmes Philip, McKinley Gareth H., Studying the effects of elongational properties on atomization of weakly viscoelastic solutions using Rayleigh Ohnesorge Jetting Extensional Rheometry (ROJER), Journal of Non-Newtonian Fluid Mechanics, 222, 2015. Crossref
-
Sousa Patrícia C., Vega Emilio J., Sousa Renato G., Montanero José M., Alves Manuel A., Measurement of relaxation times in extensional flow of weakly viscoelastic polymer solutions, Rheologica Acta, 56, 1, 2017. Crossref
-
Keshavarz Bavand, Houze Eric C., Moore John R., Koerner Michael R., McKinley Gareth H., Ligament Mediated Fragmentation of Viscoelastic Liquids, Physical Review Letters, 117, 15, 2016. Crossref
-
Dinic Jelena, Biagioli Madeleine, Sharma Vivek, Pinch-off dynamics and extensional relaxation times of intrinsically semi-dilute polymer solutions characterized by dripping-onto-substrate rheometry, Journal of Polymer Science Part B: Polymer Physics, 55, 22, 2017. Crossref
-
Zhao Hui, Liu Haifeng, Breakup Morphology and Mechanisms of Liquid Atomization, in Environmental Impact of Aviation and Sustainable Solutions, 2020. Crossref
-
Martínez Narváez Carina D. V., Mazur Thomas, Sharma Vivek, Dynamics and extensional rheology of polymer–surfactant association complexes, Soft Matter, 17, 25, 2021. Crossref
-
Porfirio Tiago, Galindo-Rosales Francisco J., Campo-Deaño Laura, Vicente João, Semião Viriato, Rheological characterization of polymeric solutions used in spray drying process, European Journal of Pharmaceutical Sciences, 158, 2021. Crossref
-
Dinic Jelena, Martínez Narváez Carina D. V., Sharma Vivek, Rheology of Unentangled Polymer Solutions Depends on Three Macromolecular Properties: Flexibility, Extensibility, and Segmental Dissymmetry, in Macromolecular Engineering, 2022. Crossref
-
Moakes Richard J. A., Grover Liam M., Robinson Thomas E., Can We Structure Biomaterials to Spray Well Whilst Maintaining Functionality?, Bioengineering, 10, 1, 2022. Crossref