Publication de 12 numéros par an
ISSN Imprimer: 1044-5110
ISSN En ligne: 1936-2684
Indexed in
ANALYSIS METHODS FOR DIRECT NUMERICAL SIMULATIONS OF PRIMARY BREAKUP OF SHEAR-THINNING LIQUID JETS
RÉSUMÉ
The goal of this work is to improve our understanding of the primary breakup of jets from shear-thinning non-Newtonian liquids. We use direct numerical simulations (DNS) with the volume of fluid method for tracking of the liquid phase and piecewise linear interface calculations for a sharp interface reconstruction. We calculate the shear-thinning viscosity with the Carreau-Yasuda model. We use the inflow velocity profile as well as the shear-thinning properties as varying parameters for different simulations. Different methods of investigation are presented and applied to the simulations. We visualize and describe the influence of shear-thinning viscosity on the breakup process. We quantify the breakup over the liquid surface area and show the influence of different inflow velocities and different shear-thinning viscosities on the breakup. The investigation is refined by analyzing quantities, which define the deformation of the jet surface. A new visualization method is used to track the temporal development of liquid mass. With these methods for analysis we lay a foundation to quantitatively compare different destabilizing parameters and to estimate droplet sizes resulting from the breakup. The combination of these analysis helps to provide a better understanding of shear-thinning breakup in general and brings us closer to predicting resulting droplet sizes.
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Ertl Moritz, Reutzsch Jonathan, Nägel Arne, Wittum Gabriel, Weigand Bernhard, Towards the Implementation of a New Multigrid Solver in the DNS Code FS3D for Simulations of Shear-Thinning Jet Break-Up at Higher Reynolds Numbers, in High Performance Computing in Science and Engineering ' 17, 2018. Crossref
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Reutzsch Jonathan, Ertl Moritz, Baggio Martina, Seck Adrian, Weigand Bernhard, Towards a Direct Numerical Simulation of Primary Jet Breakup with Evaporation, in High Performance Computing in Science and Engineering ' 18, 2019. Crossref
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Walzel Peter, Spraying and Atomizing of Liquids, in Ullmann's Encyclopedia of Industrial Chemistry, 2019. Crossref
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Wang Xin-Tao, Ning Zhi, Lü Ming, Li Yuan-Xu, Linear stability analysis of a non-Newtonian liquid jet in a coaxial swirling air, Aerospace Science and Technology, 91, 2019. Crossref
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Baggio Martina, Weigand Bernhard, Numerical Simulation for Drop Impact on Textured Surfaces, in Droplet Interactions and Spray Processes, 121, 2020. Crossref
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Heinemann Moritz, Frey Steffen, Tkachev Gleb, Straub Alexander, Sadlo Filip, Ertl Thomas, Visual analysis of droplet dynamics in large-scale multiphase spray simulations, Journal of Visualization, 24, 5, 2021. Crossref
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Steigerwald Jonas, Reutzsch Jonathan, Ibach Matthias, Baggio Martina, Seck Adrian, Haus Brian K., Weigand Bernhard, Direct Numerical Simulation of a Wind-Generated Water Wave, in High Performance Computing in Science and Engineering '19, 2021. Crossref
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Steigerwald Jonas, Ibach Matthias, Reutzsch Jonathan, Weigand Bernhard, Towards the Numerical Determination of the Splashing Threshold of Two-Component Drop Film Interactions, in High Performance Computing in Science and Engineering '20, 2021. Crossref
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Wang Zi‐Yu, Zhao Hui, Li Wei‐Feng, Xu Jian‐Liang, Liu Hai‐Feng, Primary breakup of shear‐thickening suspension jet by an annular air jet, AIChE Journal, 68, 4, 2022. Crossref
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Heinemann Moritz, Sadlo Filip, Ertl Thomas, Interactive Visualization of Droplet Dynamic Processes, in Droplet Dynamics Under Extreme Ambient Conditions, 124, 2022. Crossref