Abstract：In order to understand wind-induced dynamic characteristic of internal pressure response for a building with multiple openings in windward wall, unsteady form of Bernoulli equation was applied to deduce internal pressure governing equation for this multiple opening situation and equivalent damping ratio was derived through linearization of the governing equation. Models with single and double openings in windward wall were investigated in wind tunnel, respectively. For each opening case, internal pressure was measured for six different internal volumes. The study shows the governing equation is of high precisions in predicting internal pressure fluctuation. Increased internal volume will lead to lower resonance frequency and larger damping ratio of internal pressure, but has little effect on mean internal pressure. When compared with single opening case, double opening enlarges both Helmholtz frequency and equivalent damping ratio, therefore R.M.S ratios between internal and external pressure in double opening model is smaller than single opening situation at most wind azimuths. However, the maximum R.M.S ratios of internal to external pressure for single and double opening models are found at wind angles of 75° and 60°, respectively.
徐海巍;余世策;楼文娟. 迎风墙面多开孔结构风致内压的试验研究[J]. , 2014, 33(15): 82-86.
XU Hai-wei;YU Shi-ce;LOU Wen-juan. Experimental study on wind-induced internal pressure for a building with multiple openings in windward wall. , 2014, 33(15): 82-86.
2014, Vol. 33 
