Towards a better understanding of pressure equalization

摘要: A series of wind tunnels tests are presented on a cube, equipped with permeable outer layer. The influences cavity depth and opening width have been investigated. This research shows that direction 75 degrees respect to the considered panel gives highest differential pressures relevant for cladding. For smooth approach flow conditions uniform flows found, local effects near openings in reattachment zones. Large gaps affect pressure equalization; hardly any effect can be observed when varying depths. It is possible measures leading significant outside range current practice