2022 Fiscal Year Final Research Report
A New Expression of Three-dimensional Light Flow in Architectural Spaces and its Visual Interpretation in the Context of Human-centric Lighting Design
| Project/Area Number |
19KK0115
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| Research Category |
Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))
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| Allocation Type | Multi-year Fund |
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| Review Section |
Medium-sized Section 23:Architecture, building engineering, and related fields
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
高瀬 幸造 東京理科大学, 理工学部建築学科, 講師 (20739148)
谷口 景一朗 東京大学, 大学院工学系研究科(工学部), 特任准教授 (80746496)
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| Project Period (FY) |
2019-10-07 – 2023-03-31
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| Keywords | 光場の可視化手法 / 物理的光場 / Volume Photon Mapping / Photon Flow / 日射取得効果 |
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| Outline of Final Research Achievements |
1) We developed an extended program for Radiacne to calculate the three-dimensional visualization method: Photon Flow, which utilizes Volume Photon Map. We also proposed a simplified method for calculating the solar radiation effect for complex daylighting systems with specular reflection characteristics, by applying the concept of Photon Flow and Scalar Irradiance. 2) We clarified the conditions and limitations for predicting the physical light field through observing the Photon Flow. 3) Through actual measurements of the light field, we demonstrated that the representation of the light field using Photon Flow is intuitive and easy to understand the position of the light source and the whole light field.4) We have completed preparations to make the Photon Flow calculation program publicly available.
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| Free Research Field |
建築光環境
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| Academic Significance and Societal Importance of the Research Achievements |
Volume Photon Mapを生かした光場の３次元可視化手法Photon Flowを開発し、また建築光環境の昼光計算において世界的なデファクトスタンダードになっているフリーソフトであるRadianceに組み込むことにより、誰でもが比較的容易に新たな光環境記述手法を用いて建築光環境を検討・設計できるようになるための基礎を築いた。また建築熱環境における複雑な鏡面反射特性を持つ昼光導入装置を備えた空間における日射取得効果を正確かつ容易に予測できるようになった。これらの開発には若手研究者も関わっており、今後の日本における光環境シミュレーションの普及と発展に資するものと考える。
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