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Subject: Re: Ansys FSI nightmare
Author: Y Y Tan
Date: 2008-04-28 14:33:02Hi guys,
Thanks again for everyone's support.
Victor, thank you for your honest comments. The aim of my thesis is to actually
develop a model for blood flow in the vein. This would be use for research on a
medical condition called deep vein thrombosis. Anyway due to the lack of
in-vivo (within the body) data and because I have no experience or watsoever on
FSI modelling, my approach was to mimic the collapsible tube problem which has
had quite a number of studies in order to gain experience and to know that what
i'm doing is actually right before i proceed on to model the real vein.
However, I guess it took me pretty long before I got to this stage which to be
honest isin't really anything. I had to start by learning Ansys then I went on
to Flotran and then when I realise I didn't know how to set up the ALE in
Flotran, I had to move on to using CFX. I guess I would have been through this
much quicker if I had someone to guide me through. Most of what I have now is
by trial & error and yea what you say is true, its most probably my lack of
experience which is the problem. Anyway what I'm doing does buckle, i'm not
actually modelling rubber or anything similar to that, its just that the
material is nearly incompressible.
Hi Christopher, this particular problem has been published twice and I really do
think that it is right. Anyway I've tried many many simulations over the past
few days and all I can say for now is that the transient solution seems to
converged. However I haven't tested it fully yet. Will let you guys know how it
goes but the most important I guess would be to understand why the steady
solution didn't work. I've actually thought of something which might be the
source of this problem but as i'm typing this entry it didn't make sense to me
anymore or its just maybe that I am too tired already.
I'll keep you guys update but I need to get some sleep now. Take care and once
again, thanks for the support.
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