Wall pressure profile around cylindrical bars in yawed gas flow

Abstract

The distribution of wall pressures in cross flow through an array of four cylindrical tubes inclined at different angles was experimentally studied using air at atmospheric pressure flowing at a maximum flow of 120 g/sec. The experiments show that the pressure coefficient is strongly influenced by the inclination angle, and only marginally affected by the flow rate (within the tested range). 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.