[ytlee]

Hello TAMU forum members,

I was told that TAMU is the main developer for a flow simulator using DEALII http://www.dealii.or...II/step_21.html

Can you give us a run down for the project. Thanks


YT

Class 75.

BTW, my son, who is a longhorn aerospace engineering student told me tu has a similar program http://www.cfdlab.ae.utexas.edu/.

[frog]

I just go over the DEALII very quickly, but I haven't run this simulator before.
To me, it is a typical numerical model using finite element method(FEM).

The author used different terminology from conventional FEM.
Brief introduction at http://www.dealii.or...l.II/index.html
step 1-2 corresponds to mesh generation, in this simulator triangular cell is used;
step 3 assigns the freedom to each nodal point in a cell;
step 4 is dealing with Gauss integration point(GIP) and weighting factor at each GIP;
step 5 works on the global freedom of each nodal point and steering factor of each cell;
step 6 projects the local stiffness matrix Ke to global stiffness matrix Kb;
step 7 is the shape function(or interpolation matrix) of each cell;
step 8 denotes matrix factorization;
step 9 is the final Gauss elimination or maybe some other method to do matrix linear solver;

When you try to use this simulator, the most important part is the mesh type and constitutive equation or flow equation in it.For the method, most FEM software(as ANSYS-CFD) or simulators are more or less using the same procedure.

If you need any further instruction, please let me know. :rolleyes: