Modelling Thermal Conduction in Polydispersed and Sintered Nanoparticle Aggregates.Nanoparticle aggregation has been found to be crucial for the thermal properties of nanofluids and their performance as heating or cooling agents.  In the present study, the effects of polydispersity and sintering on the effective thermal conductivity of particle aggregates are investigated.  A noticeable decrease in the thermal conductivity is observed for elevated polydispersity levels compared to that of aggregates of monodisperse particles with the same morphological properties. 
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