Tutorial on ADINA FSI
The objective in this News is to give a tutorial on how to use ADINA in adaptive FSI. We use a problem of the ADINA Primer to
demonstrate the features — Problem 49.
Analysis of a parachute using adaptive CFD
We consider the following FSI problem:
Figure 1 Schematic of problem considered
The shroud lines are attached to a fixed point and the air flows upwards around the parachute. This simulates the situation in which the parachute floats downwards through the air at a fixed speed. Some comments regarding the analysis —
It is desired to determine the total fluid force applied to the parachute and the final shape of the parachute.
Turbulent flow conditions are assumed and the k-ε turbulence model is used.
The steady-state solution is determined using a transient analysis in which the loads are held constant.
An axisymmetric analysis is performed. The shroud lines are modeled in a very approximate manner using a truss element. The parachute is also modeled in a very approximate manner using axisymmetric shell elements.
The details of how to perform the analysis using ADINA are given here:
The final mesh reached and the solution obtained are given in
the figures below. The above movie shows the response of the
parachute largely calculated with a coarse mesh, but the final
state is reached with the finest mesh (given below).
Figure 2 Detail of final mesh reached
Figure 3 Solution obtained
For many additional problems spanning over the diverse and powerful analysis features of ADINA, see the ADINA Tutorials Page.
Fluid-structure interaction, adaptive meshing, parachute