|July 8, 2016, 18:10||
Response of erythrocytes using 2-way FSI
Join Date: Mar 2016
Posts: 14Rep Power: 2
I am working on a 2-way Fluid structure interaction project related to RBC in capillaries.
I have designed a micro-scale shell RBC and a fluid medium which has diameter just above the dia of RBC.
In the transient structural analysis I have defined two fluid surface interfaces:
1. Exterior portion of RBC (blood interacting with exterior part) 2. Interior portion of RBC.(cytoplasm interacting with interior portion)
In the Fluent medium I have defined the walls, boundaries of capillary tube and cytoplasm (hollow portion of RBC) which are supposed to interact with with the solid RBC in Transient.
I have assumed that blood runs at x velocity and cytoplasm relatively at 0.97x velocity. Similarly, in transient I have 0.97x velocity, 9.7x displacement to Solid RBC
When I run the analysis by coupling both systems I receive error by doing so. But if I reduce the time step (0.0004) sec for 10 sub-steps ,velocity to 0.0000097x and displacement by 0.000097x solution runs smoothly.
Irrespective of correctness of result, Could anyone tell me why is that if i decrease the velocity, displacement and time steps there is result and why if i consider real time scenario this does not work?
Last edited by mxl9549; July 10, 2016 at 16:01.
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