Nanofluid Modeling at Microchannel HeatSink
Hi every all
Pls tell me is it possible to simulate nanofluid as Eulerian twophase flow in microchannel in FLUENT? I'm working with CFX to model above mentioned problem,but I can't gain correct solution specially for heat transfer equations of two phases,namely dispersed solids and continuous fluid.Do you have appropriate way to overcome this problem in software or I should choice another way? 
Dear Behzad,
Why didn't you use UDS (scalar transport) instead of multiphase modelling?! Bests, 
Hi Amir
I had never used this option (UDS).Pls explain more about it and tell me how it can be applied to my modeling?Can I obtain a good solution via UDS for nanofluid flow in microchannel?Also tell me,did you never simulate nanoscale flow in FLUENT to assure me about obtaining a reasonable solution in this software? 
You said,probably need to correct other properties.Which properties are your meaning?Can I use conservation equations at default form for nanofluid or it is necessary to correct them?How I can apply Cunningham slip correction factor on the drag coefficient to ensure noslip condition for flow around a sphere nanoparticle?

Quote:
This equation has a conservative form and we are talking about Eulerian approach not lagrangian so we don't have Cunningham factor explicitly; i.e, we implicitly model nano particles, we model their effects; otherwise if you insist on using Lagrangian approach (DPM models) you'll face few bugs in modelling brownian motion. Regarding additional UDFs; they're needed to correct fluid viscosity and density and so on .... Bests, 
Quote:
yes you can use fluent and upper version of it(ansys) to model a twophase flow easily.you can fallow this manner Define>>models>>multiphase>> then you can choose your model,there are 3models (mixture,wet vapor(i think) & eulerian). 
All times are GMT 4. The time now is 01:49. 