4 System structure |
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4 System structure
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Free Pascal |
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Borland Delphi ® |
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Model file |
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C++ |
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Fortran |
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Compiler |
DLL |
Simulation |
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program |
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DLL
Solver file |
Compiler |
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format |
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Figure 1. Structure of modeling system
Figure 1 shows the structure of the simulation system. The principle behind the structure of the simulation system is that all modules, or boxes in Figure 1, should be replaceable. The shadowed boxes in the structure are file formats or protocols that specify the interface between the other modules, i.e. when for example the structure of the Model file is fixed, third party programs could replace everything below and above the Model file box. Another important feature is that the solver is replaceable.
The boxes labeled Compiler are responsible for converting a file to some binary representation. In practice the boxes represents standard available compilers, capable of building Windows DLL’s (Dynamic Link Libraries).
WinDali |
Morten Juel Skovrup |
10 4 System structure
The different modules in Figure 1 have the following meaning:
Module |
Explanation |
Model file format |
A file written in a standard programming language with a specified |
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interface to the Simulation module. |
Simulation program |
A GUI application which is displaying the results of a simulation to |
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the user as Graphs, animations, numbers, etc. |
Solver |
The numerical code which is solving the equations specified in the |
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Model file. |
Solver file format |
A file format with a specified interface understood by the Simulation |
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module. |
In the current release of WinDali, the user starts at the model file level, specifying the model in a standard programming language. With the program comes a Pascal compiler, which is freeware, but other programming languages can be used.
WinDali |
Morten Juel Skovrup |