F112 立方体建屋の上流側煙源から放出されたトレーサガス濃度変動性状に関する風洞実験

概要

論文の詳細を見る
Wind tunnel experiments were conducted to study the concentration fluctuation within a tracer gas plume considering the relation between plume spreads in the atmosphere. Tracer gas was released from a continuous elevated point source located upstream position of a cubical building in a simulated atmospheric boundary layer, and the concentration fluctuation was measured using fast-response flame ionization detectors. Wind tunnel experiment results of mean concentration and concentration fluctuation intensity were compared with those of a flat plate condition and effects caused by a cubical building were showed. Then, the probability distribution functions of concentration fluctuation were estimated and compared with those of lognormal distributions. It was apparent that good agreement with those of lognormal distributions and almost the constant value of high concentration of concentration fluctuation, when normalized with concentration fluctuation intensity, were obtained within the plume around a cubical building.
日本流体力学会の論文
2000-07-25