How to couple meshes, using periodic condition?

TimothyJ · July 30, 2014, 14:40

Hi,

I have a question which might be similar to “periodic boundary condition” other people asked.

If our system is complicated and is simulated by different people on different machines, and the output of one group (velocity, pressure, all vector field) needs to be used subsequently as the input for another simulation, how to achieve that? How can we modify the initial conditions to incorporate the full result of another simulation, more than merely at the boundary? In a word, how could different results (meshes, fields) be coupled?

Tim

sbaffini · July 31, 2014, 14:15

What you ask can have several answers. As i understand your question, you are talking about different physical people using different physical machines and fluent instances. Also, i understand that these people are gonna use such fields in sequence, one after the other, and not in parallel.

As such you have 3 very simple options:

1) Save the case and data and let it be read by the other people. Save it in ascii if you are not sure about the endianess of the two machines.

2) Just save the data and let it be read by the other people, if they already have the geometry and the fluent .cas file. Save it in ascii if you are not sure about the endianess of the two machines.

3) Interpolate your solution and let the other people read it. In this case the file is in ASCII form but grid doesn't need to be the same as yours for the file to be read. Of course, it is better if it is.

These options are under file/write or file/interpolate

Is this that you were looking for?

July 30, 2014, 14:40	How to couple meshes, using periodic condition?	#1
TimothyJ New Member Timothy John Join Date: Jul 2014 Posts: 1 Rep Power: 0	Hi, I have a question which might be similar to “periodic boundary condition” other people asked. If our system is complicated and is simulated by different people on different machines, and the output of one group (velocity, pressure, all vector field) needs to be used subsequently as the input for another simulation, how to achieve that? How can we modify the initial conditions to incorporate the full result of another simulation, more than merely at the boundary? In a word, how could different results (meshes, fields) be coupled? Tim

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July 31, 2014, 14:15		#2
sbaffini Senior Member Paolo Lampitella Join Date: Mar 2009 Location: Italy Posts: 2,151 Blog Entries: 29 Rep Power: 39	What you ask can have several answers. As i understand your question, you are talking about different physical people using different physical machines and fluent instances. Also, i understand that these people are gonna use such fields in sequence, one after the other, and not in parallel. As such you have 3 very simple options: 1) Save the case and data and let it be read by the other people. Save it in ascii if you are not sure about the endianess of the two machines. 2) Just save the data and let it be read by the other people, if they already have the geometry and the fluent .cas file. Save it in ascii if you are not sure about the endianess of the two machines. 3) Interpolate your solution and let the other people read it. In this case the file is in ASCII form but grid doesn't need to be the same as yours for the file to be read. Of course, it is better if it is. These options are under file/write or file/interpolate Is this that you were looking for?