Numerical Analyses of Hygrothermal Durability Performances on Multi-dimensional Composite Building Envelopes with Metalic Elements

金属元素多维复合建筑围护结构湿热耐久性能的数值分析

• 批准号: 13650652
• 负责人: SHIBAIKE Hideki
• 金额: $ 2.3万
• 依托单位: Kyoto Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650652/
• 关键词: Steel elements; Exterior insulation; Vented cavity; Boundary Element method; Corrossion prediction; ISO 9223 standard; SUS pillar; Alminum cladding; 発錆・腐食侵攻予測モデル; 鉄骨建築壁体; 二重相反法; 熱・水分・空気同時移動問題; 海塩相当付着量; 一定境界要素; 半解析的積分; 2次式; 2次元

In order to provide high performance building envelopes as a counter measure against the climate change issues, a durability assessment of composite steel walls are the one of the important engineering challenges to be solved in ner future, It should be required a jointed technology of numerical simulation procedures for the long term hygrothermal performances on building envelopes with metallic elements and corrosion performance predictions on them.In this investigation, we have developed a numerical procedure to predict both hygrothermal and corrosion performances for multi-dimensional composite building envelopes with metallic elements. Multi dimensional heat, air and moisture transfer has been formulated by the boundary element techniques. Numerical evaluation procedures were proposed for boundary integrals and domain integrals with both numerical efficiency and accuracy. A simple and robust procedure to describe boundaries and interfaces for arbitrarily connected heterogeneous bod … More ies has been described which can reduce computational resources for pivoting coefficients for solving the system of equations. Couples of simple thermal problems have been analysed as numerical demonstrations.In the sixth chapter, in situ monitored experimental data on the real scaled exterior insulation wall with vented cavity has been analysed in order to demonstrate usefulness and applicability of the proposed method for hygrothermal and corrosion performances. The monitored wall with vented cavity devised aluminum exterior cladding supported by SUS pillars. The differences on thermal performances and moisture and corrosion performances as well, have been evaluated. The merging these monitored data can create important opportunity to compare and validate the whole numerical procedure. Besides it also provide opportunity for experimental evaluations on following aspects : (1) Hygrothermal performances of a vented cavity wall, (2) the air flow and dehumidification characteristics of the cavity, and (3) improving thermal and economical performance of pillars fabricated by stainless-steel or aluminum which support the finish layer. In this paper, the experimental setup and the measurement plan are described and measured data on recent hygrothermal situations of wall systems are presented. Less

为了提供高性能建筑信封作为对气候变化问题的反测量，对复合钢墙的持久性评估是在神经未来中要解决的重要工程挑战之一，应该需要进行数值模拟程序的连接技术，以使长期的综合性能在构建中的综合元素和数字预测一范围的综合效果。具有金属元素的多维复合建筑信封的湿热和腐蚀性能。多维热，空气和水分转移已通过边界元素技术制定。提出了数值评估程序，用于具有数值效率和准确性的边界积分和域积分。一个简单而健壮的过程，用于描述任意连接异质体的边界和接口……已经描述了更多的IE，可以减少用于求解方程系统的系数的计算资源。在第六章中，已经分析了第六章中对实际缩放的外部绝缘壁的实验数据，已经分析了用通风腔，以证明提出的湿热和腐蚀性方法的有用性和适用性。带有通风腔的受监测墙设计了SUS支柱支撑的铝外部覆层。还评估了热性能以及水分和腐蚀性能的差异。合并这些监视的数据可以创造重要的机会来比较和验证整个数值过程。此外，它还提供了有关以下方面进行实验评估的机会：（1）通风腔壁的湿气表演，（2）腔的空气流量和除湿特性，以及（3）改善由固定钢或铝制造的支柱的热和经济性能，以支持支撑余整层。在本文中，描述了实验设置和测量计划，并介绍了有关壁系统潮湿情况的测量数据。较少的

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