STAR-CCM+ Batch Automation Tool

This project automates batch CFD simulations in STAR-CCM+ using Python.

It performs:

• Automated case creation from template
• Macro modification using parameter placeholders
• Batch execution via command line
• Automatic extraction of pressure difference (ΔP)
• Summary report generation

The tool is designed for parameter sweep studies and CFD workflow automation.

Manual execution of multiple STAR-CCM+ cases is time-consuming and error-prone.

This tool demonstrates:

• Engineering automation mindset
• Integration between Python and STAR-CCM+
• Batch simulation orchestration
• Result post-processing

main.py → Entry point (orchestrates batch run) star_runner.py → Simulation execution logic logger_config.py → Centralized logging setup batch_config.json → Parameter definitions sim.java → STAR macro template

1. Reads simulation parameters from batch_config.json
2. Copies template .sim file for each case
3. Modifies Java macro placeholders:
   • {{MESH_SIZE}}
   • {{CASE_NAME}}
4. Executes STAR-CCM+ in batch mode
5. Extracts ΔP from exported CSV
6. Writes summary report

{
 "star_executable": "starccm+",
 "template_sim": "bend_tube.sim",
 "java_macro": "sim.java",
 "simulations": [
 {
 "case_name": "baseline",
 "mesh_size": 200
 },
 {
 "case_name": "refined",
 "mesh_size": 150
 }
 ]
}