Boundary layer flow over gentle curvilinear topography with a sudden change in surface roughness

✍ Scribed by A. K. Lo; Dr G. A. McBean

• Publisher: John Wiley and Sons
• Year: 1977
• Tongue: English
• Weight: 453 KB
• Volume: 103
• Category: Article
• ISSN: 0035-9009
• DOI: 10.1002/qj.49710343514

✦ Synopsis

Abstract

A new approach using a curvilinear coordinate system that enables incorporation of a change of roughness with a zero‐plane displacement or elevation change in a boundary‐layer model is presented. the effect of topography together with the rapid development of an internal boundary layer produce vertical wind speeds that reach a maximum value of about 25 % of the horizontal component. It is found that perturbations due to a smooth‐to‐rough transition together with an increase of elevation are stronger than those generated from a rough‐to‐smooth transition with a decrease of elevation.