Resumo

MARINO, R. et al. Polar profile of the wall pressure on cylindrical bars in yawed gas flow. Lat. Am. appl. res. [online]. 2010, vol.40, n.3, pp. 287-294. ISSN 0327-0793.

The polar distribution of wall pressures in cross flow through a cell of four cylindrical tubes inclined at different angles 30°≤α≤90° was experimentally studied using flow air at near atmospheric pressure flowing at a maximum velocity of 30.8 m/sec (2200≤R ≤6100). The experiments show that the pressure coefficient is strongly influenced by the inclination angle. For perpendicular cross flow, the experiments were compared with those obtained from potential flow theory showing poor agreement. A model based on the curvature of the stream lines in the gap between bars agrees very well with the pressure coefficient at the gap.

Palavras-chave : Gas Flow; Yawed Flow; Cylindrical Tubes; Pressure Drop; Boundary Layer.