Evaluation of the effects on building indoor ventilation rates of unsteady and non-uniform flow field by numerical simulation

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K14078
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Architectural environment/Equipment
• Research Institution: Kyushu University
• Principal Investigator: Ikegaya Naoki 九州大学, 総合理工学研究院, 助教 (70628213)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 都市キャノピー / 非定常換気

Outline of Final Research Achievements

In this theme, series of numerical simulation have been conducted in order to clarify the effect of non-uniform and unsteady flow field generated by urban building arrays on indoor ventilation efficiency. Conclusions are summarized as follows. First, wall pressure distribution on a target building differs drastically due the surrounding building array types because of the non-uniform flow distributions. Second, suitable conditions are clarified for estimating indoor ventilation rates by conventional prediction method by classifying flow distribution patterns in the openings and by comparing gross ventilation rates and those deduced by the conventional method.

Free Research Field

環境工学