Modeling of dry snow adhesion during normal impact with surfaces
Journal article, 2020

Contamination due to dry snow smoke adhesion is an evident danger for sensor blinding on future autonomous driving cars under winter road conditions. This paper examines at what velocities ice particles and agglomerates, representing dry snow, adhere to surfaces of various materials. Contact models for normal direction, tangential sliding, and tangential rolling that account for the adhesive interaction of spherical particles due to Van der Waals forces are used in the study. Three different scenarios of impacts are presented i) single particle impact, ii) small agglomerate impacts, and iii) large agglomerate impacts. It is shown that by increasing the number of particles in an agglomerate, the velocity at which the agglomerate sticks to the impact wall increases, i.e. the agglomerate is more likely to stick to a surface. It is also shown how material properties influence the tendency of dry road snow to adhere to a surface.

Agglomerate impact

Discrete element method

Snow adhesion


Tobias Eidevåg

Volvo Cars

Chalmers, Chemistry and Chemical Engineering, Chemical Technology

Per Abrahamsson

Chalmers, Chemistry and Chemical Engineering, Chemical Technology

Matthias Eng

Volvo Cars

Anders Rasmuson

Chalmers, Chemistry and Chemical Engineering, Chemical Technology

Powder Technology

0032-5910 (ISSN) 1873-328X (eISSN)

Vol. 361 1081-1092

Subject Categories


Paper, Pulp and Fiber Technology

Infrastructure Engineering



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