CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Packed bed temperature profile

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   December 2, 2008, 18:36
Default Packed bed temperature profile
JoĆ£o fernandes
Posts: n/a
Hi folks,

I am trying to simulate the flow of a fluid (whose thermophysical properties change greatly with temperature and pressure) in a structured packed bed. This packed bed is composed of many packing elements. I developed a previous model for a whole packing element with 3.3 million elements and now I am trying to study the heat transfer on this geometry. In my experimental apparatus I am measuring the temperature of the fluid at the entrance and at the outlet (in the distance between these two points there are 10 packing elements). Since the mesh for a whole packing element is already very big, my first approach to simulate the the 10 packing elements was to carry on consecutive simulations with the packing element model, saving the outlet profiles of velocities and temperature of a previous simulations and using them as inputs at the next simulation. At the end of ten consecutive simulations I ended with a big difference between the experimental and simulated results (I previously validated the hydrodynamics for the whole packing element model). These are the questions: 1. Is it possible that by performing successive simulations I am generating a lot of deviation (for instance, due to interpolation of the velocity and temperature profiles) ; 2. I could try to join the meshes for the ten packing elements but I feel that this would be pointless (I would end with a grid with about 35000 elements - unmanageable!) 3. I will thankfully accept any ideias regarding the solution of my problem and how to proceed with the study of the heat transfer.

Many thanks in advance,

Best regards to you all!

  Reply With Quote

Old   December 25, 2008, 06:09
Default Re: Packed bed temperature profile
Posts: n/a
Hello I am also working on structural packing simulation with CFD. Can I ask you a few questiond? 1- What type of structure packing do you work with?( I work with 252x malpack) 2- what sofware do you apply to design geometry?( I use gambit) 3- would you please send me the file of geometry that you have designed?

Thanks a million Ali

  Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
UDF: temperature profile dolores FLUENT 6 August 5, 2016 20:16
Temperature profile on an interface Thomas Vanneste FLUENT 0 February 9, 2009 10:06
udf for Temperature profile Ralf FLUENT 5 December 6, 2008 02:42
profile of temperature enzo FLUENT 0 September 4, 2005 06:53
profile of temperature enzo FLUENT 1 September 4, 2005 06:49

All times are GMT -4. The time now is 00:15.