Calculate

Once the geometry is created, the boundary conditions are applied and the mesh has been generated, we can proceed to solve the problem. Through the Calculate menu, we can start the solution process from within GiD. When pressing the Start button in the Calculate window, GiD will first write the calculation file called ProblemName.flavia (ProblemName being the name under which the problem has been saved in GiD), and then start the process. This can be done automatically by using the corresponding icon (see Figure 25).

Information about the evolution of the solution can be displayed by pressing Output View. This can also be done using the corresponding icon (see Figure 25).

 

Figure 25 Calculate and Output View icons

While running Tdyn creates a number of output files:

ProblemName.flavia.res

Results file

ProblemName.flavia.WAR

Output View file

ProblemName.flavia.for

Forces file

ProblemName.flavia.rst

Restart file

ProblemName.flavia.tim

Time table

ProblemName.flavia.ram.msh

Mesh for RamSeries

ProblemName.flavia.ram.res

Data for RamSeries

The results file ProblemName.flavia.res will be loaded when selecting the Postprocess option. The output view file ProblemName.flavia.WAR contains the information about the process that will be displayed in the Output View window. ProblemName.flavia.for contains the forces that act on the FluidBoundary element sets at each time step. Finally the ProblemName.flavia.rst file is used, when the process needs to be restarted, using previously calculated variables as the initial condition.

Note that each calculation process started will overwrite old results files in the problem directory (ProblemName.gid), unless they are previously renamed.

Once the solution process is completed, we can visualise the results using Postprocessor module.