Non-newtonian/viscoelastic flow with heat transfer - which solver to use?

tdof · February 8, 2017, 10:39

Hi,

I'm planning to simulate the flow of a nonlinear viscoleastic fluid with heat transfer as well as temperature dependent viscosity in OF Extend and I'm digging around to get all the information I need. To start, I'm running a few simulations with a shear thinning fluid using nonNewtonianIcoFoam, but it does not support heat transfer, is that right? I found a few links showing how to implement heat transfer in icoFoam, so I recon it is possible to do the same with nonNewtonianIcoFoam. Apparently, pisoFoam and pimpleFoam (or was it simpleFoam?) support non-newtonian behaviour as well. But as my work progresses, I will need to switch to viscoElasticFluidFoam and I'll need the temperature dependent viscosity, but I haven't found if it supports temperature-dependent viscosity or not. Is there a solver that fits my need out of the box or is it necessary to build my own?

tomf · February 12, 2017, 05:34

Hi,

A while (18 months?) ago I was asking myself the same question since I would maybe need to run a simulation of a nonNewtonian fluid with temperature dependent viscosity. I did not find a readily available model back than, but in the end the shear effects could be ignored for the project, so I did not investigate further.

I did decide that it would have been necessary to develop a new viscosity model, so I guess that would still be my conclusion.

Cheers,
Tom

tdof · February 12, 2017, 07:55

Hi,

it would be necessary to create a new solver combining viscoelastic fluid properties, heat transfer capabilities and temperature dependent viscosity. A member of the forum already did this, but unfortunately lost most parts of his data. So I guess I'll either adapt the models to the solvers or vice-versa, meaning combining existing solvers.

bfzah · December 25, 2017, 04:02

Hello
How can I form a vortex in a square-shaped channel?
Or how can I see vortices?
In all the papers, a vortex pair is seen at the corners of the channel with the Giesekus model.
How can this be modeled with open foam?
what is the properties flow ?
B.C ?

please help me?

my Email: farhadhoseinbor@gmail.com
Telegram id: @bfzah

February 8, 2017, 10:39	Non-newtonian/viscoelastic flow with heat transfer - which solver to use?	#1
tdof Member Join Date: Jun 2016 Posts: 31 Rep Power: 10	Hi, I'm planning to simulate the flow of a nonlinear viscoleastic fluid with heat transfer as well as temperature dependent viscosity in OF Extend and I'm digging around to get all the information I need. To start, I'm running a few simulations with a shear thinning fluid using nonNewtonianIcoFoam, but it does not support heat transfer, is that right? I found a few links showing how to implement heat transfer in icoFoam, so I recon it is possible to do the same with nonNewtonianIcoFoam. Apparently, pisoFoam and pimpleFoam (or was it simpleFoam?) support non-newtonian behaviour as well. But as my work progresses, I will need to switch to viscoElasticFluidFoam and I'll need the temperature dependent viscosity, but I haven't found if it supports temperature-dependent viscosity or not. Is there a solver that fits my need out of the box or is it necessary to build my own?

December 25, 2017, 04:02	viscoelastic	#4
bfzah New Member farhad Join Date: Dec 2017 Posts: 11 Rep Power: 8	Hello How can I form a vortex in a square-shaped channel? Or how can I see vortices? In all the papers, a vortex pair is seen at the corners of the channel with the Giesekus model. How can this be modeled with open foam? what is the properties flow ? B.C ? please help me? my Email: farhadhoseinbor@gmail.com Telegram id: @bfzah

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February 12, 2017, 05:34		#2
tomf Senior Member Tom Fahner Join Date: Mar 2009 Location: Breda, Netherlands Posts: 647 Rep Power: 32	Hi, A while (18 months?) ago I was asking myself the same question since I would maybe need to run a simulation of a nonNewtonian fluid with temperature dependent viscosity. I did not find a readily available model back than, but in the end the shear effects could be ignored for the project, so I did not investigate further. I did decide that it would have been necessary to develop a new viscosity model, so I guess that would still be my conclusion. Cheers, Tom

February 12, 2017, 07:55		#3
tdof Member Join Date: Jun 2016 Posts: 31 Rep Power: 10	Hi, it would be necessary to create a new solver combining viscoelastic fluid properties, heat transfer capabilities and temperature dependent viscosity. A member of the forum already did this, but unfortunately lost most parts of his data. So I guess I'll either adapt the models to the solvers or vice-versa, meaning combining existing solvers.