Biphasic computational fluid dynamics modelling of the mixture in an agricultural sprayer tank
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hdl:2117/185130
Tipus de documentArticle
Data publicació2020-04-18
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Abstract
Agitation inside agricultural sprayer tanks can be studied while using an international
standard procedure, based on obtaining internal samples of liquid. However, in practice, this
test is not easy to perform. Herein, we propose the explicit study of the mixing procedure with
biphasic computer simulations using Computational Fluid Dynamics (CFD). An experimental test
was performed on a 3000 L tank of a commercial air-assisted sprayer, with two di erent agitation
system configurations, in order to compare the results of several theoretical physical models of
biphasic flows for CFD, both Eulerian and Lagrangian. From the analysis of these theoretical models,
we conclude that the Volume of Fluid model is not viable and the Discrete Phase Model produces
erroneous results, while the Eulerian and Mixture models can both be useful. However, the results
obtained suggest that complex streams generated by real-world agitation systems produce more
errors in calculations. Both models can be conducted in the design phase, prior to the implementation
of the machine. In addition, the computer simulations allow for researchers to analyse the mixing
process in detail, making it possible to evaluate the e ciency of an agitation system according to the
time that is required to reach mixture homogeneity.
CitacióGil, E. [et al.]. Biphasic computational fluid dynamics modelling of the mixture in an agricultural sprayer tank. "Molecules", 18 Abril 2020, vol. 25, núm. 1870, p. 1-15.
ISSN1420-3049
Versió de l'editorhttps://www.mdpi.com/journal/molecules
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2010_CFD Agittion- Molecules.pdf | 2,868Mb | Visualitza/Obre |