It is important to estimate corrosion environment of steel bridges for a proper
corrosion prevention and maintenance program. Adhered sea-salt particulate
matter (SSPM) is an influential factor especially in coastal areas. To this end, it is
better to know the adhesion behavior of SSPM to bridge girders. The objective of
this manuscript is to pursue numerical method to simulate the adhesion behavior of
salt particles oriented from sea surface. Specifically, two scale approach is
proposed. Mesoscale Meteorological Analysis and Lagrangian type two phase
flow analysis are used in global and local analyses respectively. The comparisons
between the numerical and observed results showed that the numerical analysis can
reproduce essential behaviors of airborne SSPM.