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Showing results 1 to 15 of 15 Search took 0.00 seconds. Search: Posts Made By: ghorrocks

Forum: CFX February 3, 2016, 16:55

Replies: 35 Nanofluid modeling Views: 8,277 Posted By ghorrocks This is the CFX forum, and it discusses any issue... This is the CFX forum, and it discusses any issue about the CFX software. Fluent and CFX are bundled together in a typical ANSYS installation now and it appears some people are now thinking they...

Forum: CFX June 27, 2014, 06:18

Replies: 35 Nanofluid modeling Views: 8,277 Posted By ghorrocks Have you read any of the posts in this thread? If... Have you read any of the posts in this thread? If you have a question about Fluent then try the Fluent forum.

Forum: CFX May 30, 2014, 02:24

Replies: 35 Nanofluid modeling Views: 8,277 Posted By ghorrocks If you are using Fluent then try the Fluent... If you are using Fluent then try the Fluent forums. Fluent has more models available and is more adaptable so you can add your own models. Thsi is probably going to be easier in Fluent than CFX.

Forum: CFX May 30, 2014, 02:08

Replies: 35 Nanofluid modeling Views: 8,277 Posted By ghorrocks I should write an FAQ on this.... CFX has no... I should write an FAQ on this.... CFX has no nanofluid models. The multiphase model in CFX is a MICRO scale model. It assumes that the lagrangian phase is affected by things like inter-phase slip,...

Forum: CFX April 16, 2014, 18:35

Replies: 35 Nanofluid modeling Views: 8,277 Posted By ghorrocks What are the nanoparticles? What do they do to... What are the nanoparticles? What do they do to the flow? What is the flow? What do you want to compare?

Forum: CFX April 16, 2014, 06:06

Replies: 35 Nanofluid modeling Views: 8,277 Posted By ghorrocks Then I suspect you have defined the nanoparticles... Then I suspect you have defined the nanoparticles as a continuous phase and that does not sound correct. Can you describe what you are modelling and why you are sure you need a two-phase eularian...

Forum: CFX April 15, 2014, 18:45

Replies: 35 Nanofluid modeling Views: 8,277 Posted By ghorrocks Have you read the posts on this thread? It says... Have you read the posts on this thread? It says why nanoparticles should, in general, not be modelled using a multiphase model. My post #16 outlines the main possible approaches.

Forum: CFX December 25, 2013, 04:24

Replies: 35 Nanofluid modeling Views: 8,277 Posted By ghorrocks There are many approaches to model this. The... There are many approaches to model this. The simplest is to model the nanoparticle concentration as an additional variable with convection and diffusion. Then you can make the fluid properties a...

Forum: CFX December 23, 2013, 21:20

Replies: 35 Nanofluid modeling Views: 8,277 Posted By ghorrocks This thread has many posts about the suitability... This thread has many posts about the suitability of multiphase models in nanoparticle flows. But the general answer is probably not, but until you give specific details of what you are modelling I...

Forum: CFX December 4, 2013, 06:28

Replies: 35 Nanofluid modeling Views: 8,277 Posted By ghorrocks If you don't know how it affects those properties... If you don't know how it affects those properties then how can you model it? You need to understand that physics of what you want to model before you touch CFX. So you need to do some research...

Forum: CFX December 3, 2013, 00:54

Replies: 35 Nanofluid modeling Views: 8,277 Posted By ghorrocks And how does it change fluid properties......... And how does it change fluid properties.........

Forum: CFX December 2, 2013, 16:13

Replies: 35 Nanofluid modeling Views: 8,277 Posted By ghorrocks How does the nanofluid affect the heat transfer... How does the nanofluid affect the heat transfer coefficient and pressure drop? Does simply change the fluid thermal conductivity and/or viscosity or does it do something more complex? If so, what?

Forum: CFX December 2, 2013, 05:59

Replies: 35 Nanofluid modeling Views: 8,277 Posted By ghorrocks Let me ask this more clearly - I cannot suggest... Let me ask this more clearly - I cannot suggest what model would be suitable until you tell us what is the important physics you are trying to model. There are many possible effects of nanoparticles...

Forum: CFX December 2, 2013, 04:22

Replies: 35 Nanofluid modeling Views: 8,277 Posted By ghorrocks What effect on the continuous fluid? ... What effect on the continuous fluid? Nanoparticles generally have no slip relative to the continuous phase as they are so small. Multiphase models are generally based around the idea of...

Forum: CFX December 1, 2013, 16:17

Replies: 35 Nanofluid modeling Views: 8,277 Posted By ghorrocks It depends on what physics you want the... It depends on what physics you want the nanoparticles to show. Also it is unlikely that a multiphase model will be appropriate as multiphase assumes mixing at the micro scale level, not the nano...

Showing results 1 to 15 of 15

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