Hybrid CFD-Wind Tunnel Platform for Wind Load Evaluation of Tall Buildings

用于高层建筑风荷载评估的混合 CFD 风洞平台

• 批准号: RGPIN-2019-05569
• 负责人: Aboshosha, Haitham
• 金额: $ 2.26万
• 依托单位: Ryerson University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=683897
• 关键词: Hybrid; CFD; Wind; Tunnel; Platform

Design codes have limitations when it comes to wind load evaluation for tall buildings. For example, the codes (i) consider only basic building shapes, (ii) can't account for local surrounding configuration which can be of a significant effect, and (iii) do not distinguish between synoptic (regular) and non-synoptic (thunderstorm) winds. Wind Tunnel (WT) and Computational Fluid Dynamic (CFD) tools can be used in those cases. WT has gone through a long journey of over five decades of validation and utilization. However, conducting a WT study requires a long lead time (several weeks) for the model construction and instrumentation. CFD can overcome this challenge especially when the parallel computational power is properly utilized. However, because of its relatively newer introduction to wind load evaluation, CFD still needs more validation. This proposal focuses on coupling CFD and WT tools to combine the merits of both in terms of robustness and accuracy to study tall buildings aerodynamics.******In this research proposal, three research programs have been introduced to investigate wind load evaluation of tall buildings considering snoptic and non-synoptic (thunderstorm) winds as follows: (i) Develop and validate a High-Performance (HP) CFD code tailored for aerodynamic wind load evaluation on Shared Memory Multi-Processor (SMMP) systems. SMMP systems prove to be 3-4 times faster than systems based on Message Passing Interface (MPI) widely used in current CFD codes; (ii) Develop, calibrate and automate a platform for WT testing at the subsonic WT at Ryerson U, which will be utilized to validate the CFD code in Program i; (iii) Develop and validate an analysis platform to couple the aerodynamic data from CFD/WT with climate and structural dynamic analyses to predict building responses and equivalent static loads. ******The anticipated CFD/WT platform will be employed to analyze several building shapes and surrounding configurations to cover the gaps in the design codes mentioned above and to develop a simplified analytical wind load evaluation approach suitable for practitioner engineers and/or for adoption in design codes. In addition, the platform enables users from both academia and industry to use the platform through a cyber interface at no cost to obtain their building loads. This will ultimately benefit our society to have buildings more resilient to natural wind-related disasters frequently driven by the climate change, which are two of the priority research areas of the Canadian Government.

在高大建筑物的风负荷评估方面，设计代码有局限性。例如，代码（i）仅考虑基本的建筑形状，（ii）无法说明可能产生重大影响的局部构型，并且（iii）不能区分概要（常规）和非同步（雷暴）风。在这些情况下，可以使用风洞（WT）和计算流体动力学（CFD）工具。 WT经历了五十多年来的验证和利用过程。但是，进行WT研究需要较长的交货时间（几周）才能进行模型构建和仪器。 CFD可以克服这一挑战，尤其是在正确利用并行计算能力时。但是，由于其对风负荷评估的相对较新的介绍，CFD仍然需要更多的验证。该提案着重于将CFD和WT工具耦合，以结合研究高建筑物空气动力学的鲁棒性和准确性。******在这项研究建议中，引入了三个研究计划，以调查对风负荷评估的评估。高大建筑物考虑了以下方式考虑索环和非合成（雷暴）风：（i）在共享内存多处理器（SMMP）系统上量身定制的高性能（HP）CFD代码。基于消息传递接口（MPI）广泛使用的CFD代码中的消息传递接口（MPI），SMMP系统被证明比系统快3-4倍。 （ii）在Ryerson U的亚音速WT上开发，校准和自动化一个用于WT测试的平台，该平台将用于验证程序I中的CFD代码； （iii）开发和验证一个分析平台，以将CFD/WT的空气动力数据与气候和结构动态分析相结合，以预测建筑物的响应和等效的静态载荷。 ******将采用预期的CFD/WT平台来分析几种建筑形状和周围配置，以涵盖上述设计代码中的空白，并开发一种适用于从业人员工程师和/或的简化分析风负载评估方法用于在设计代码中采用。此外，该平台使来自学术界和行业的用户可以免费通过网络界面使用该平台来获得建筑物的负载。这最终将使我们的社会受益，使建筑物对与自然风相关的灾难更具弹性，这是气候变化所驱动的，这是加拿大政府的优先研究领域的两个优先研究领域。