Modelling of multi-species thin film flows based on the transport of ions including conjugate heat transfer applied to corrosion testing Online publication date: Tue, 03-Sep-2024
by Uwe Janoske; Steffen Seifritz
Progress in Computational Fluid Dynamics, An International Journal (PCFD), Vol. 24, No. 5, 2024
Abstract: Corrosion tests are standardised test procedures where specimen is subjected to different climates in test chambers with defined test cycles. The cycles are a complex scenario of spraying, drying and condensation phases. Aqueous sprays with different salts lead to liquid films and corrosion processes on the specimen. As there are various kinds of salts present which will deposit based on the local concentration of the ions, the stoichiometry and the solubility, the conventional modelling with a given number of species is extremely difficult. Therefore, the modelling approach for handling species was changed to the modelling of the transport of ions in the film including condensation and evaporation. The verification is reported on a simple U-shaped specimen whereas a more complex specimen was used for the validation with experimental results on the basis of a standardised test cycle in corrosion testing.
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