Abstract
In this paper, we would like to explain the visualization system for surface pressure using electronically scanned pressure sensors. This system is able to measure 512 pressure sensor channels (32 sets of 16-port module) simultaneously in which the maximum sampling frequency is about 330HZ. We carried out a wind tunnel test about bluff bodies in various aspect ratio, and we created a 16mm movie to visualize the fluctuating surface pressure(aspect ratio=3) using 3D computer graphic techniqes. So we can observes a interesting phenomena of strong negative pressure patern movement on side of the bluff body.
