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:
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 kε turbulence model is used. The steadystate 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: Primer Problem 49: Analysis of a parachute using adaptive CFD 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).
Another application of the ADINA FSI mesh adaptive capability was presented in an earlier News. For a summary of the FSI capabilities, see here. For many additional problems spanning over the diverse and powerful analysis features of ADINA, see the ADINA Tutorials Page.
