摘要
简要介绍了一种应用在建筑物模型风洞试验中测量脉动风压的电子扫描系统。它是由原电子扫描测压系统ＰＳＩ７８０Ｂ的传感器模块及其校正单元、与多通道高速Ａ／Ｄ板、ＰＣ４８６微机和新设计的测压点选通接口组成。此外还使用毛细管限流器改善脉动测压系统的频响，并以上海浦东某高层建筑模型的脉动风压试验为例，讨论了系统的应用以及有关试验风速、采样时间与频率的选取。
A new fluctuating pressure measurement system is developed for wind tunnel tests of building models. This system contains pressure scanner modules and a pressure calibration unit of an original electronically scanning pressure measurement system(PSI 780B), a multi channel A/D converter, a personal minicomputer (PC 486) and a new designed pressure multiplexer interface. The restrictor method is used for correcting the pressure distortion caused by PCV tubs and improving the frequency response of the presure measuring system.The pressure measurement system is used to measure fluctuating wind pressures on a tall building model. The test velocity,sampling time and frequency on dynamic wind pressure tests are also discussed.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
1999年第2期214-218,共5页
Journal of Nanjing University of Aeronautics & Astronautics
关键词
风洞试验
脉动风压测量
测压系统
建筑物
wind tunnel tests
fluctuating pressure measurement
electronically scanning pressure measurement system
