Tubeloss

Calculator for aerosol particle transport efficiency through sampling tubes, accounting for diffusion and inertial losses.

Authors

Web version: Sander Mirme (sander@airel.ee)
Original MATLAB implementation: Heikki Junninen, Pasi Aalto, Tuukka Petäjä

Method

Transport efficiency is calculated from laminar diffusion losses (Gormley-Kennedy equation), turbulent diffusion, and inertial deposition. The flow regime is determined by the Reynolds number, with interpolation in the transition region.

References

• Brockmann, J.E. (2001). Sampling and Transport of Aerosols (Ch 8). In: Baron, P.A. and Willeke, K., Aerosol Measurement: Principles, Techniques, and Applications, 2nd ed., John Wiley & Sons, New York.
• Gormley, P.G. and Kennedy, M. (1949). Diffusion from a stream flowing through a cylindrical tube. Proc. R. Irish Acad. 52A, pp. 163-169.

License

GPL-3.0

62c34df-dirty (2026-02-28)