UVSim3D is specialized software for calculating the UV irradiance distribution inside UV/VUV reactors. It helps water treatment engineers to:

What you can do with it

• Predict UV Fluence Rate: calculate the UV fluence delivered at any point inside a reactor
• Optimize lamp layout: design lamp positions for maximum disinfection efficiency
• Evaluate reactor performance: compare performance across different configurations
• Couple with CFD: compute accurate UV dose through CFD integration

Key features

• Multiple lamp configurations (low-pressure LP and medium-pressure MP lamps supported)
• Multi-wavelength modeling (185nm–300nm and user-defined wavelengths)
• Large-scale simulation (handles tens of millions of mesh points)
• Industry-standard file formats (VTU, VTKHDF, CGNS)
• CFD UDF support (UDFs for integration with commercial and open-source CFD codes)
• Python wrapper (for Python users' convenience)

For installation and a first run, see the getting started guide.