Freestream turbulence and wind tunnel blockage effects on streamwise surface pressures
作者： P.J. Saathoff , W.H. Melbourne
DOI: 10.1016/0167-6105(87)90005-5
关键词: Leading edge 、 Meteorology 、 Wind tunnel 、 Turbulence kinetic energy 、 Flow (psychology) 、 Freestream 、 Turbulence 、 Bubble 、 Mechanics 、 Standard deviation 、 Physics 、 Mechanical engineering 、 Renewable Energy, Sustainability and the Environment 、 Civil and Structural Engineering
摘要: Abstract Wind tunnel experiments were conducted to study the effects of blockage and freestream turbulence on streamwise surface pressures in a separation bubble. Mean fluctuating measured near leading edge short axisymmetric cylinders grid-generated smooth flow. found be strongly dependent intensity but little affected by scale. On other hand, both The parameter σ u / (L x /D) 0.15 provided reasonable correlation data for L /D >0.06 . Blockage corrections obtained separation. A ratio 5% caused mean pressure increase magnitude ∼ 15% standard deviation peak 20%. results these demonstrate importance minimizing wind when measuring building models.
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