TY - GEN
T1 - A Numerical Method and Study of Viscoelastic Droplet Breakup
AU - Anderson, Caroline
AU - Kinzel, Michael
N1 - Publisher Copyright:
Copyright © 2022 by ASME.
PY - 2022
Y1 - 2022
N2 - This paper presents a comprehensive study of viscoelastic, droplet-breakup physics using multiphase computational fluids dynamics (CFD) based on the volume of fluid (VOF) method. The specific challenge and novelty are the overall outcome and methods used to explore viscoelastic breakup physics. In the context of VOF, the method approximates both viscous and elastic characteristics of the saliva with a function based on the Carreau-Yasuda (CY) model. The CY model is traditionally used for modeling blood flow and here is extended to approximate saliva. The foundation of the model couples the shear rate to drive both a variable viscosity and relaxation time. The results indicate a strong stabilizing effect of viscoelastic fluids that indicates that conventional breakup models provide a conservative estimate of droplet size as is relevant to the transmission pathogens.
AB - This paper presents a comprehensive study of viscoelastic, droplet-breakup physics using multiphase computational fluids dynamics (CFD) based on the volume of fluid (VOF) method. The specific challenge and novelty are the overall outcome and methods used to explore viscoelastic breakup physics. In the context of VOF, the method approximates both viscous and elastic characteristics of the saliva with a function based on the Carreau-Yasuda (CY) model. The CY model is traditionally used for modeling blood flow and here is extended to approximate saliva. The foundation of the model couples the shear rate to drive both a variable viscosity and relaxation time. The results indicate a strong stabilizing effect of viscoelastic fluids that indicates that conventional breakup models provide a conservative estimate of droplet size as is relevant to the transmission pathogens.
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U2 - 10.1115/FEDSM2022-87895
DO - 10.1115/FEDSM2022-87895
M3 - Conference contribution
AN - SCOPUS:85133960949
T3 - American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FEDSM
BT - Multiphase Flow (MFTC); Computational Fluid Dynamics (CFDTC); Micro and Nano Fluid Dynamics (MNFDTC)
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2022 Fluids Engineering Division Summer Meeting, FEDSM 2022
Y2 - 3 August 2022 through 5 August 2022
ER -