Computation of wind flow over topography

Abstract Computer models of wind flow over topography are run to establish appropriate values of Topographic Multipliers for both gust wind speeds and mean wind speeds at and above ground level. The work was initially undertaken to test the rules in the Australian Standard [1]. It is found that the rules are too lax for peak multipliers for two-dimensional escarpments, embankments and ridges in neutrally stratified boundary layers.