Modelling of nanoparticle jet from leakage of conveying pipe - breakage of nanoparticle aggregate

Abstract : This paper presents a numerical modelling of nanoparticles jet under pressure in which the breakage of nanoparticles aggregates and the drag force are simulated by Code_Saturne. Within a nanoparticles jet, the size distribution and number concentration of aggregates evolves due to the breakage of aggregates under the fluid turbulence. The breakage of aggregates has been modeled by implementing a Monte-Carlo method within Code_Saturne under Euler-Lagrange approach. The numerical results show that the breakage of aggregates is very strong in the turbulence field near the leakage. When aggregates leave this near field, the breakage decreases because of lower turbulence and in the same time the aggregate size decreases which enhances aggregate strength. The sensitivity of the breakage theoretical model to the resistance of aggregates under various conditions of turbulent fluid dissipation shows an expected trend. Those numerical results need to be compared with experimental data when available in the future.
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Jean-Marc Lacome, Alexis Vignes, Bruno Debray, Benjamin Truchot, Pascal Fede, et al.. Modelling of nanoparticle jet from leakage of conveying pipe - breakage of nanoparticle aggregate. 16. Congrès de la Société Française de Génie des Procédés (SFGP 2017), Jul 2017, Nancy, France. ⟨ineris-01863201⟩

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