Small-Scale Wind Tunnel for the Investigation of the Influence of Environmental Conditions on the Performance of Building Materials

IF 1.5 4区工程技术 Q3 ENGINEERING, MECHANICAL

Experimental Techniques Pub Date : 2023-09-12 DOI:10.1007/s40799-023-00672-y

R. Cacciotti, B. Wolf, M. Macháček

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引用次数: 0

Abstract

Climate significantly affects the performance of building materials and its changing patterns are posed to increasingly exacerbate the projected impacts. Prevention strategies are indeed necessary to ensure avoiding excessive degradation and serious damage to the built environment. In this context, innovative and accessible methodologies and tools are required to investigate and characterize the interaction between material properties and climatic factors. This paper presents an innovative device for the simulation of natural ventilation, relative humidity and temperature fluctuations and for evaluating the performance of building materials subjected to different environmental scenarios. The presented results include the design, construction and validation of a small-scale wind tunnel (2 m × 1.8 m ca. vertical orientation). Key findings outline the adequacy of the tool in reproducing a stable, quality airflow with the following characteristics: achievable operational airflow speed ranges between 0.2 and 0.7 m/s, safe operational temperature is included between 10℃ and 35℃ and allowable operational relative humidity varies between 30 and 99%. Advantages and limitations for laboratory applications are outlined in the paper and future work is also suggested.

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用于研究环境条件对建筑材料性能影响的小型风洞

气候对建筑材料的性能有重大影响，而气候模式的不断变化将使预计的影响日益加剧。为确保避免建筑环境过度退化和严重破坏，确实有必要采取预防战略。在这种情况下，需要创新且易于使用的方法和工具来研究和描述材料特性与气候因素之间的相互作用。本文介绍了一种创新装置，用于模拟自然通风、相对湿度和温度波动，以及评估建筑材料在不同环境条件下的性能。所介绍的成果包括一个小型风洞（垂直方向约 2 米 × 1.8 米）的设计、建造和验证。主要研究结果概述了该工具在再现稳定、优质气流方面的充分性，其特点如下：可实现的运行气流速度范围在 0.2 至 0.7 米/秒之间，安全运行温度范围在 10℃ 至 35℃ 之间，允许的运行相对湿度范围在 30% 至 99% 之间。文中概述了实验室应用的优势和局限性，并对未来的工作提出了建议。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Experimental Techniques 工程技术-材料科学：表征与测试

CiteScore

3.50

自引率

6.20%

发文量

审稿时长

5.2 months

期刊介绍： Experimental Techniques is a bimonthly interdisciplinary publication of the Society for Experimental Mechanics focusing on the development, application and tutorial of experimental mechanics techniques. The purpose for Experimental Techniques is to promote pedagogical, technical and practical advancements in experimental mechanics while supporting the Society''s mission and commitment to interdisciplinary application, research and development, education, and active promotion of experimental methods to: - Increase the knowledge of physical phenomena - Further the understanding of the behavior of materials, structures, and systems - Provide the necessary physical observations necessary to improve and assess new analytical and computational approaches.