Choice of appropriate aggregation radius for the descriptions of different properties of the nanofluids
作者： Dongxing Song , Jiandong Zhou , Yechun Wang , Dengwei Jing
DOI: 10.1016/J.APPLTHERMALENG.2016.04.064
关键词: Radius 、 Heat transfer enhancement 、 Gyration 、 Nanoparticle 、 Particle 、 Thermodynamics 、 Materials science 、 Nanofluid 、 Hydrodynamic radius 、 Diffusion (business)
摘要: Abstract Nanofluids with suspensions containing nanoparticles, have been considered to great potential in the application of energy conversion, chemical technology or heat transfer enhancement. Due high surface energy, nanoparticles nanofluid tend form large secondary aggregates. The aggregation and size increase could lead significant change various physical properties suspension. It is well known that many kinds equivalent radii can be potentially employed description particle aggregates, such as hydrodynamic radius (Rh), gyration (Rg) smallest sphere enclosing (Rs) etc. However, most previous study, only was used study effect on nanofluids. Systematic appropriate choice for different nanofluids, rare. In this three representative nanoparticle Rh, Rg Rs, were studied. found both diffusion limited cluster–cluster (DLCA) reaction (RLCA), general sequence Rh
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