Experimental evaluation of the velocity fields for local exhaust hoods with circular and rectangular openings
Experimental evaluation of the velocity fields for local exhaust hoods with circular and rectangular openings
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DOI：
10.1016/0360-1323(96)00011-x
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发表时间：
1996-09-01
影响因子：
7.4
通讯作者：
Cascetta, F
中科院分区：
文献类型：
--
作者：
Cascetta, F
对具有圆形和矩形(右四边形)开口的局部排气罩附近诱导的速度场进行了详细的实验评估。它包含对专门建造的测试设备、所采用的测量仪器以及正在使用的实验程序的全面描述。结果表明，对于给定的开孔形状，法兰开孔和平盖开孔的速度场有很大不同。还观察到可能由不稳定现象(流体附着)和外部支撑物或物体的影响引起的流体动力不对称性。关于这一专题的进一步工作载于一份相关文件[F.Cascetta和L.Bellia，Building and Environment，31,451-459(1996)]。版权所有(C)1996爱思唯尔科学有限公司。
A detailed experimental evaluation of the velocity fields induced in the proximity of local exhaust hoods with circular and rectangular (right quadrilateral) openings is presented. It contains a comprehensive description of the purpose-built test facility, of the measurement instrumentation adopted, and of the experimental procedure in use. Results show that, for a given opening shape, the velocity fields are quite different for flanged or plain hood opening. Fluid-dynamic asymmetries, probably caused by possible instability phenomena (fluid stream attachment) and by the influence of external supports or objects, are also observed. Further work on this topic is presented in a related paper [F. Cascetta and L. Bellia, Building and Environment 31, 451-459 (1996)]. Copyright (C) 1996 Elsevier Science Ltd.