The flux-angle distribution of momentum as determined from propeller anemometer measurements

✍ Scribed by A. Weiss; L. H. Allen Jr.

• Book ID: 104574630
• Publisher: John Wiley and Sons
• Year: 1976
• Tongue: English
• Weight: 307 KB
• Volume: 102
• Category: Article
• ISSN: 0035-9009
• DOI: 10.1002/qj.49710243407

✦ Synopsis

Abstract

Flux‐angle distributions of momentum derived from measurements of a UVW propeller anemometer were compared with results from a three‐component sonic anemometer and were found similar. Under unstable and near neutral conditions, momentum fluxes were negative both at small angles of attack for updraughts and at large angles of attack for downdraughts. At other angles of attack, the momentum flux‐angle distribution was always positive. A flux‐angle distribution algorithm is presented which shows the relative contribution made by each angle of attack of the flow to the total flux.