境界層流中にある長方形断面角柱の空力不安定性について

Abstract

This paper describes a wind tunnel study to investigate the effects of wind directions andmass-damping parameters on the response of prisms with rectangular cross-sections.The simultaneous measurements of along and cross wind responses were carried out bya dynamic model balance with two degrees of freedom. A series of tests were performed toassess the effects of changes in stiffness, mass, damping and wind direction.These tests were conducted by placing the models in two different types of boundary layersgenerated in a wind tunnel with working section 2.5 m wide, 2 m high and 21 m long.The maximum response of tall building with an usual mass-damping parameter was general-ly found to occur in the cross wind direction when the wind is blowing perpendicularly onto aface.