|October 10, 2014, 03:43||
FSI with contact of structural parts
Join Date: Jan 2014
Posts: 5Rep Power: 3
right now I try to establish an FSI simulation of two elastic flaps which are deformed by water flow (or air) in a rectangular duct (2.5 D). The long term aim is an FSI simulation of native heart valves.
I am struggling around with the induced contact of the elastic flaps.
In the first figure you can see the entire model and in the second figure you see the moment when the simulation crashes (negative cell volumes), as the tet elements are getting too small.
I am using a tet mesh with prismatic elements around the elastic flaps. Diffusion smoothing (diff parameter = 1), local cell, local face, region face remeshing. I DO NOT want to use 2.5 D remeshing as my model will go into the 3-D space anyways.
Has anyone experience on how to get contact in an FSI simulation? I understand that in my case the flaps won't be able to close completely as I will separate the fluid zones and get infinite pressures. However in the later case (3D) I will get contact of the structural parts in some places.
My idea right now is to make FLUENT delete the tet and prism elements if the flaps are getting closer and closer until 1 or 2 prism layers are in the tiny gap, but I do not know how to do it...
Thanks a lot
|Thread||Thread Starter||Forum||Replies||Last Post|
|FSI Structural convergence problem||Blizzard99||CFX||13||December 23, 2014 04:45|
|Defining contact regions in FSI problem.!!!||sreemvlk||ANSYS||0||June 12, 2014 00:33|
|1 way and 2 way FSI in ANSYS Workbench with Fluent and ANSYS Structural||jwillie2000||FLUENT||3||March 16, 2013 11:47|
|FSI Mechnical Contact Problem in Labyrinth Seal Calculations||peterputer||CFX||0||September 18, 2012 15:59|
|FSI on a Rotating Structural Model||drgolf||CFX||9||August 30, 2007 12:08|