风洞试验流场特性的模拟及分析  

Simulation and Analysis of Flow Field Characteristics in Wind Tunnel Testing

作　　者：冯帅 Feng Shuai(Guangzhou Municipal Construction Group Co.,Ltd.,Guangzhou,Guangdong 510030;State Key Laboratory of Subtropical Building and Urban Science,South China University of Technology,Guangzhou,Guangdong 510641)

机构地区：[1]广州市建筑集团有限公司,广东广州510030 [2]华南理工大学亚热带建筑科学国家重点实验室,广东广州510641

出　　处：《现代工程科技》2024年第15期97-100,共4页Modern Engineering Technology

摘　　要：建筑围护结构相对于主体结构在风荷载作用下更易发生破坏,因此研究建筑周围流场对于结构抗风至关重要。通过组合不同形状、尺寸的流场试验装置研究流场分布特性,根据不同工况组合模拟出相同地貌下不同湍流度分布可控的流场,以及同一地貌下3种不同缩尺比在参考高度处流场分布特性一致的流场,为开展建筑围护结构表面风压分布特征及抗风措施研究奠定了可靠的基础。The building envelope structure is more prone to damage under wind loads compared to the main structure,so studying the flow field around the building is crucial for structural wind resistance.By combining flow field test devices of different shapes and sizes,the distribution characteristics of the flow field were studied.Based on different working conditions,controllable flow fields with different turbulence levels under the same terrain were simulated,as well as flow fields with consistent distribution characteristics at reference heights under three different scaling ratios under the same terrain.This laid a reliable foundation for studying the surface wind pressure distribution characteristics and wind resistance measures of building envelope structures.

关 键 词：流场模拟 风洞试验 平均风速 湍流度 功率谱 

分 类 号：V211.74[航空宇航科学与技术—航空宇航推进理论与工程]