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inversion
Posted 2012/02/05 11:09 GMT-5 Low-Frequency Electromagnetics Version 4.1, Version 4.2, Version 4.2a 1 Reply
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Hi,
Someone told me that it might be possible to use Comsol to solve geophysical problems using the optimization module.
I have yet to have the optimization module but I downloaded the Livelink for matlab manual and read the section on Using solver Configurations.
My question is, is it possible for Comsol to do a serious inversion calculation, solving the objectif function? I have seeing the "Aquifer Characterization" model but its not what I'm looking for.
For example, if I wish to do a 3D resistivity inversion, can Comsol do both the modeling (yes) and inversion? Or I have to split the modeling with Comsol and inversion with Matlab?
If so how? I would like to know before making any decision on purchasing the modules or not.
Any documentations, examples, comments, etc... are welcome!
Thank you in advance!
Someone told me that it might be possible to use Comsol to solve geophysical problems using the optimization module.
I have yet to have the optimization module but I downloaded the Livelink for matlab manual and read the section on Using solver Configurations.
My question is, is it possible for Comsol to do a serious inversion calculation, solving the objectif function? I have seeing the "Aquifer Characterization" model but its not what I'm looking for.
For example, if I wish to do a 3D resistivity inversion, can Comsol do both the modeling (yes) and inversion? Or I have to split the modeling with Comsol and inversion with Matlab?
If so how? I would like to know before making any decision on purchasing the modules or not.
Any documentations, examples, comments, etc... are welcome!
Thank you in advance!
1 Reply Last Post 2012/02/08 11:05 GMT-5
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Posted:
1 decade ago
Hi
the method of resolution in COMSOL corresponds to a least square fitting to unknown data if you set it up for that, check the optimisation chapter, if you have a single variable to resolve you can run it like that, if you have a complex optimisation to set up, the pre-cooked math in the optimisation module is ready made such to simplify your job.
This can be done "all in one, or via 2 coupled solver runs all depends how you set up your model
--
Good luck
Ivar
the method of resolution in COMSOL corresponds to a least square fitting to unknown data if you set it up for that, check the optimisation chapter, if you have a single variable to resolve you can run it like that, if you have a complex optimisation to set up, the pre-cooked math in the optimisation module is ready made such to simplify your job.
This can be done "all in one, or via 2 coupled solver runs all depends how you set up your model
--
Good luck
Ivar