Application Purpose

This application provides a simple and intuitive GUI for executing a compiled OpenModelica model with user-defined start and stop times. It enables users to select the executable file, input simulation parameters, and ensures that the time constraints adhere to the condition: 0 ≤ start time < stop time < 5. The tool streamlines the simulation process by automating execution while enhancing user experience through validation and error handling.

Project Overview

The project consists of two main tasks:

1. Model Compilation – Using OpenModelica to compile the "TwoConnectedTanks" model and generate an executable program along with its required dependencies.
2. GUI Application Development – Creating a Python-based graphical user interface (GUI) to run the generated executable with specified parameters.

Implementation Steps

1. Install OpenModelica on a Windows 10/11 system.
2. Download the model package and load all models into OMEdit, which is bundled with OpenModelica.
3. Compile the "TwoConnectedTanks" model to generate an executable and its necessary dependencies.
4. Gather the executable and its dependent files (not all are uploaded due to size constraints).
5. Develop a Python GUI application with the following features:
   • Three input fields:
     • Executable Path: Allows selection of the compiled OpenModelica executable.
     • Start Time: Numeric input for the simulation's start time.
     • Stop Time: Numeric input for the simulation's stop time.
   • A Browse button for selecting the executable file.
   • A Run button to launch the executable with the specified start and stop times.
6. Implement argument passing to the executable using OpenModelica’s simulation flags (Refer to: OpenModelica User Guide).
7. Ensure input validation, enforcing the constraint: 0 ≤ start time < stop time < 5.

Technologies Used

• Python 3.6+
• PyQt6
• OpenModelica
• Windows 10/11

Application Features

Graphical User Interface (GUI)

• Input fields for selecting the executable, start time, and stop time.
• A file browser for easy executable selection.
• A button to execute the model simulation.

Validation & Error Handling

• Ensures valid numeric input and adheres to 0 ≤ start time < stop time < 5.
• Checks for a valid file path and prevents execution if inputs are incorrect.
• Displays user-friendly error messages for invalid selections.

Object-Oriented Design (OOP)

• Encapsulates logic within a ModelLauncherApp class.
• Implements modular methods for clarity and maintainability.

Code Quality

• Follows PEP8 standards for readability and organization.

How to Run the Application

1. Install PyQt6:

   pip install PyQt6

2. Save the script as ModelLauncher.py.
3. Run the script:

   python ModelLauncher.py

Usage Instructions

1. Click Browse to select the compiled OpenModelica executable.
2. Enter valid start and stop times.
3. Click Run to execute the simulation with the specified parameters.