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August 22, 2003, 20:55 |
advection-diffusion equation
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#1 |
Guest
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Hi, I am going to solve coupled navier-stokes and advection-diffusion equation. Is it possible to simulate these equations in FLUENT? If so, please tell me how to imply FLUENT to coupled navier-stokes and advection-diffusion equation. Thanks in advance.
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August 23, 2003, 05:39 |
Re: advection-diffusion equation
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#2 |
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By advection-diffusion equation I assume you mean the transport of a scalar due to the flow.
Yes this is possible to do in FLUENT. Depending on what your scalar is you may be able to use internal standard FLUENT models (eg. species transport) otherwise you can write some C code to define the diffusion term and source term of the scalar when coupled with the flow equations. Greg |
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August 25, 2003, 05:22 |
Re: advection-diffusion equation
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#3 |
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YES!! you can simulate the advection-diffusion process. I had tried some convection-diffusion for gas-gas and gas-porous media. the result quite good.... but still need to figure out some thing for gas-liquid system....
what version of the FLUENT u used?? FLUNET v6 got some glitch when calculating the concentration, the latest version corrected this glitch already. best luck!! tyw |
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August 27, 2003, 20:16 |
Re: advection-diffusion equation
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#4 |
Guest
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Thank you for your comments. I am trying to simulate the concentration (advection-diffusion equation) coupled with flow (navier-stokes equation). Do I need to write udf program or to use internal standard fluent model? Thank you in advance.
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August 29, 2003, 03:02 |
Re: advection-diffusion equation
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#5 |
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Currently i am using the internal code. do u have any similiar experiment result with u problme?? if u have then you may try to simulate the experiment and compare. if the result is quite good, then i believe no need to use a udf...
best luck, Ivan |
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August 29, 2003, 06:15 |
Re: advection-diffusion equation
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#6 |
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Thank you for your comments. No, we don't have experimental data. We are going to simulate the concentration of drug in the blood flow. Thus which part of Fluent manual do I have to read? Thank you in advance.
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September 2, 2003, 00:33 |
Re: advection-diffusion equation
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#7 |
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under the species transport section.
good luck for u simulation. |
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October 24, 2011, 05:24 |
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#8 | |
New Member
somayyeh m
Join Date: Sep 2011
Posts: 7
Rep Power: 15 |
Quote:
thank u very much Ivan. |
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February 20, 2013, 08:36 |
simple advection diffusion models
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#9 |
New Member
Hansjoerg Seybold
Join Date: Mar 2009
Posts: 15
Rep Power: 17 |
Hi,
I'd like to come back to the question of solving simple scalar time dependent advection-diffusion equation in Fluent without energy coupling for a static (frozen flow field) e.g. contamination concentration http://http://en.wikipedia.org/wiki/...usion_equation where c is the concentration and v the fluid velocity Fluent offers transport models at 3 places 1. Thermal models 2. scalar transport models (UDS) 3. Transport & Reaction I understand the basic concepts in the Theory Guide but i get confused with all the different options in the menus and options. Could anyone guide me which model to choose and how to define the different transport parameters. Thanks a lot in advance. |
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