open_in_paraview.py

"""Simple script to open an OpenFOAM case in ParaView."""

import subprocess
import sys
from pathlib import Path

# Get case directory from command line or use default
if len(sys.argv) > 1:
    case_dir = sys.argv[1]
else:
    case_dir = "work/20250707_213752_channel_case"

case_path = Path(case_dir)
if not case_path.exists():
    print(f"Case directory not found: {case_dir}")
    sys.exit(1)

# Create .foam file if it doesn't exist
foam_file = case_path / f"{case_path.name}.foam"
if not foam_file.exists():
    foam_file.touch()
    print(f"Created foam file: {foam_file}")

# Get ParaView path from environment or use default
paraview_path = r"C:\Program Files\ParaView 6.0.0"
paraview_exe = Path(paraview_path) / "bin" / "paraview.exe"

if not paraview_exe.exists():
    print(f"ParaView not found at: {paraview_exe}")
    print("Please update the paraview_path variable")
    sys.exit(1)

# Open ParaView with the foam file
print(f"Opening ParaView with case: {foam_file}")
try:
    # Use the foam file directly, not the Python script
    subprocess.Popen([str(paraview_exe), str(foam_file)])
    print("\nParaView opened successfully!")
    print("\nTo visualize the results:")
    print("1. The case should load automatically")
    print("2. Click the 'Apply' button in Properties panel")
    print("3. Select the time step you want to view (e.g., 125)")
    print("4. Choose a field to color by (e.g., U for velocity, p for pressure)")
except Exception as e:
    print(f"Error opening ParaView: {e}")