Influences of refrigerant-based nanofluid composition and heating condition on the migration of nanoparticles during pool boiling. / Peng, Hao in International journal of refrigeration, Vol. 34 N° 8 (Décembre 2011)  

Influences of refrigerant-based nanofluid composition and heating condition on the migration of nanoparticles during pool boiling. = Influences de la composition et le chauffage d'un nanofluide sur la migration des nanoparticules lors de l'ébullition libre. Partie II : développement et validation du modèle : Part II: Model development and validation [texte imprimé] / Peng, Hao, Auteur ; Guoliang Ding, Auteur ; Haitao Hu, Auteur . - 2012 . - pp. 1833–1845.
Génie mécanique
Langues : Anglais (eng)
in International journal of refrigeration > Vol. 34 N° 8 (Décembre 2011) . - pp. 1833–1845

Mots-clés :	Bubble Liquid Model Particle CFD Vapor
Résumé :	The objective of this study is to propose a model for predicting the migration characteristics of nanoparticles during the refrigerant-based nanofluid pool boiling. In establishing the present model, the departure and rising processes of bubble, as well as the movement of nanoparticles in the liquid-phase are firstly simulated; then the capture of nanoparticles by bubble and the escape of nanoparticles from the liquid–vapor interface are simulated; finally, the migration ratio of nanoparticles is obtained by flotation theory combining the analysis on the boiling process. The proposed model can predict the influences of nanoparticle type, nanoparticle size, refrigerant type, mass fraction of lubricating oil, heat flux and initial liquid-level height on the migration of nanoparticles. The migration ratio of nanoparticles predicted by the model can agree with 90% of the experimental data of within a deviation of ±20%, and the mean deviation is 12.1%.
ISSN :	0140-7007
En ligne :	http://www.sciencedirect.com/science/article/pii/S0140700711001836