Problem Data

Once the boundary conditions have been assigned and the materials have been defined, we have to specify the other parameters of the problem. The values listed next have to be entered in the Tdyn Problem and Solver Data window.

Problem Page

 

Solve Fluid

No

Solve Species Advection in Fluid

Yes

Analysis Page

Number of Steps

400

Time Increment

0.005

Max Iterations

1

Initial Steps

0

Results Page

 

Output Step

40

Fluid Solver Page

 

Time Integration

Crack Nicolson

Remark:

In this problem, we have changed the time integration scheme in order to increase the accuracy of the results. This is done, by selecting Crank_Nicolson in the Time Integration field. This way, the time integration scheme used in the solution process of the fluid problem will be an implicit 2nd order scheme. Note that in some cases, the use of a 2nd order scheme may create some instability in the solution process.