Basic_CFD

Quasi-1D CFD Solver for Compressible Flow in a Nozzle

This project implements a Python-based CFD solver to simulate compressible fluid flow through a nozzle. The solver uses the MacCormack method in both conservative and non-conservative forms. The latest version provides a Streamlit interface to select options, run simulations, and display results interactively.

🔧 Features

• MacCormack Solver: Explicit solver for quasi-1D compressible flows.
• Conservative & Non-Conservative Forms: Two solver options (Mac_Cormack.py and Mac_Cormack_conservation_form.py).
• Nozzle Geometry: Define nozzle shape and boundary conditions via Nozzle.py.
• Visualization: Graphical output of velocity, pressure, density, and temperature profiles (Plot.py).
• Interactive GUI: Run simulations and visualize results using Streamlit (main.py).
• Unit Tests: Validate the solver through predefined test cases (Test.py).

📁 Repository Structure Basic_CFD/

• Main.py # Streamlit interface to run simulations and view plots
• Mac_Cormack.py # Standard MacCormack solver
• c_Cormack_conservation_form.py # Conservative form MacCormack solver
• Nozzle.py # Nozzle geometry and boundary conditions
• Plot.py # Plotting functions
• Test.py # Unit tests
• pycache/ # Compiled Python files

🚀 Installation

Clone the repository: git clone https://github.com/AChauvin78/Basic_CFD.git cd Basic_CFD

Install dependencies: pip install numpy matplotlib streamlit

📊 Usage Using the Streamlit GUI

Run the main interface:

streamlit run main.py

The GUI allows you to:

• Select solver options (conservative or non-conservative).
• Configure nozzle geometry and boundary conditions.
• Run simulations interactively.
• Display plots directly in the interface.
• Running the Solvers Directly

Non-conservative solver: python Mac_Cormack.py

Conservative solver: python Mac_Cormack_conservation_form.py

📸 Screenshots