I have done a numerical simulation of a nanofluid in a microchannel heat sink using Al2O3-water nanofluid. In this simulation, I used a single-phase methodology since I have all the thermophysical properties of the nanofluids from experimental data.
Is it still possible to quantify the effect of Brownian motion and Thermophoresis on my microchannel system? If yes, what do I need to do?
Thank you for your help
Kindly check the following published facts for the answer. However, it could also help you to validate results on the effects of increasing Brownian motion of particles and thermophoresis..
Meta-analysis on thermo-migration of tiny/nano-sized particles in the motion of various fluids. Chinese Journal of Physics. doi:10.1016/j.cjph.2019.12.002
A meta-analysis on the effects of haphazard motion of tiny/nano-sized particles on the dynamics and other physical properties of some fluids. Chinese Journal of Physics, 60, 676–687. doi:10.1016/j.cjph.2019.06.007
Contribution of BM= Mass Flux due to BM/total flux
Contribution of T =Mass flux due to T/total flux
Hi Saheed,
Regardless of the modeling approach that you employ, it is always possible to quantify the relative importance of convective forces in your microchannel compared to Brownian diffusive forces and thermophoretic diffusive forces via the Brownian Péclet number and the thermophoretic Péclet number, respectively.
Those are defined on Pages 90 and 72 ofArticle Numerical investigation of nanofluid particle migration and ...
For the contribution of Brownian motion you should consider Corcione model for dynamic viscosity and thermal conductivity for single phase nanofluid model.
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