Once the
boundary conditions have been assigned, we have to specify the other parameters
of the problem. These have to be entered in the Tdyn Problem and Solver Data
window (Figure
18). Several data as the
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Figure 18 Problem Data menu and icon |
Note that after entering or changing parameters in the Tdyn Problem and Solver Data window the Accept Data button has to be pressed.
In our case the only data that have to be changed are in the PROBLEM (see final values in Figure 19), ANALYSIS and RESULTS tags.
Figure 19. Tdyn Problem and Solver Data window |
Figure 20. Tdyn Problem and Solver Data window |
Through the Tdyn Problem and Solver Data window it is also possible to define solver properties (see FLUID SOLVER and SOLID SOLVER tags) and symmetry planes (see OTHER tag) for example. These options will not be changed in this example.
Figure 21. Tdyn
Problem and Solver Data window |
Following are explanations of the most useful options:
Option | Meaning |
Number of Steps | Number of steps of the simulation. Total |
Max Iterations | Maximum number of iterations of the non-linear fluid scheme (recommended values 1-3). |
Time increment | Time increment for each |
Output Step | Each Output_Step |
Output Start | Results will be written after Output_Start |
Figure 22 gives a brief summary of the boundary conditions, boundary definitions and material properties that have been applied to the control domain.
Condition | Entity |
Fix Velocity | Line 3 |
Fluid Body | Line 1, 2, 4 |
Fluid | Surface 1 |
Fix Pressure | Point 1 |
Figure 22 Overview of the applied conditions |
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