XANSYS Message: 93022 [Go back to message list]
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Subject: Ansys FSI nightmare
Author: Y Y Tan
Date: 2008-04-25 20:30:07Hi guys,
Its now 1 week away from my dissertation deadline, I have posted up my problem
several times and people here have helped me clarify alot of things. Yet, I
still can not get the results that I want, I really feel that my FE skills are
letting me down or maybe its just how i approach things. I have ran my FE model
for almost 300 times now for the past few months and I have really ran out of
ideas what I can do.
Let me just explain my model again, I have a circular pipe, with a steady state
laminar flow through it. The pipe walls are flexible and an external pressure
is applied onto the pipe walls. Because the external pressure is greater than
the internal pressure of the fluid, the pipe will buckle inwards and because of
that, the flow will have to squeeze through the constriction and the local
pressure will drop because of Bernoulli, and as a result the pipe will further
deform. This is a highly non-linear and highly coupled problem.
My question is, can Ansys actually solve this type of problem? I am currently
using MFX and doing the sequential analysis where I run CFX first before I run
Ansys. Would a simultaneous analysis be a better option?
I'm about to burst out in tears as I write this post, I really really hope that
someone here could understand the situation which I'm going through and help me
go through this modelling problem and consequently help save me from failing my
degree. :(
Regards,
Tan Yi Yong
The University of Sheffield
E: mea05yyt_at_sheffield.ac.uk
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