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Putting Boundary Conditions in ANSYS CFX 12.1 |
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November 27, 2010, 17:37 |
Putting Boundary Conditions in ANSYS CFX 12.1
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Join Date: Nov 2010
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Hey Guys!!
I am doing 2-way coupled 'Fluid-Structure Interaction' simulation of blood flow in axisymmetric abdominal aortic aneurysm, using ANSYS 12.1 mechanical and Fluid Flow(CFX). I have the following questions :- 1) The boundary conditions at the inlet and outlet of the fluid domain are those of velocity and pressure respectively as follows: uz(r, t) = 1.22um(t)[1−(2r/d)]^(1/7), ur=0 at z = 0 σnn = ˆn · p(t)I · ˆn at z = Le I have the time variations of um(t) and p(t) waveforms. How do I put these boundary conditions in ansys Fluid Flow(CFX)?? 2) How do I put the boundary condition of symmetry about the centreline?? 3) The boundary conditions at the interface between solid and fluid domains include no-slip, displacement and traction boundary conditions. Do I need to put them explicitly or they are assumed on their own by ANSYS?? If I do need to put them, then how?? If anybody could help, it would be great!! |
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