著者

萩島 理 片山 忠久 林 徹夫 谷本 潤

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.64, no.516, pp.79-85, 1999-02-28 (Released:2017-02-03)

参考文献数

12

被引用文献数

5 6

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Surface temperature distributions of tree crowns were examined with thermo-couples and infrared thermal images in June and October. As to the temperature difference between the crown surface and the ambient air, thermo-couples show partially higher surface temperatures in the daytime by 8℃ at the highest. However the temperature difference obtained with the thermal images ranges from -2〜0℃ to -2〜2℃. Since the thermal images directly show the radiative temperature distribution, it is concluded the average radiative temperature on the tree crowns is almost as same as the ambient air temperature.

著者

廣瀬 智陽子 池谷 直樹 萩島 理 谷本 潤

出版者

日本建築学会

雑誌

日本建築学会環境系論文集 (ISSN:13480685)

巻号頁・発行日

vol.87, no.791, pp.19-28, 2022-01-30 (Released:2022-01-01)

参考文献数

24

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The velocity field in a naturally ventilated building within urban-like arrays was explored by means of large-eddy simulations. The reduced-scale building models were utilized to examine the impact of the geometric conditions in surrounding buildings and cross-ventilating windows on flow statistics as well as instantaneous velocity fields in a sheltered building. The obtained results indicated how the incoming flow was propagated in the target building. Although simplified conditions were employed, the present findings of the features of cross-ventilation are valuable to consider the effect of outdoor turbulent flow to indoor wind environment.

著者

谷本 潤 萩島 理 田中 尉貴

出版者

日本建築学会

雑誌

日本建築学会環境系論文集 (ISSN:13480685)

巻号頁・発行日

vol.74, no.640, pp.753-757, 2009-06-30 (Released:2010-01-18)

参考文献数

13

被引用文献数

1

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An improved cellular automaton model based on Yanagisawa & Tomoeda , Nishinari (2007) was established, where both Static Floor Field and collision effect were considered. Several model parameters were carefully determined by going through a turning process based on experimental data provided by other previous studies. Both results by simulation based on the model and analytical approach derived from the so-called Mean-Field Approximation proved that the outflow rate from an evacuation exit, usually estimated by the so-called flow coefficient, can be improved by putting appropriate obstacles in front of the exit. This is because the appropriate allocation of obstacles can deflate collision probability at the exit by increasing collisions around the obstacles before the exit.

著者

谷本 潤 萩島 理 成田 健一

出版者

九州大学

雑誌

基盤研究(B)

巻号頁・発行日

2010

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一連の風洞模型実験,Large Eddy Simulation(LES)に基づく数値実験により,建築物を主体とする地上の粗度要素が大気境界層下端への熱・空力学フォーシング(強制力)として如何に作用するかに関して,その素過程解明の端緒を得た.[流体物理科学への貢献]また,都市キャノピーモデルへの適用,更には街区内歩行者レベルの温熱環境予測評価大系への応用を念頭に置き,上記の熱・空気力学フォーシングを実際には複雑系である都市や建築の幾何形状を適切にパラメータライズすることで,バルク輸送係数としてモデル化した.[都市環境工学への貢献]

著者

池谷 直樹 谷本 潤 萩島 理 相良 博喜

出版者

日本建築学会

雑誌

日本建築学会技術報告集 (ISSN:13419463)

巻号頁・発行日

no.26, pp.845-848, 2007-12-20

参考文献数

7

被引用文献数

1

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In order to reproduce both transient dynamics and space distribution of an urban population only derived from a simple self-organism principle, a multi-agent simulation model is established. A resident agent tries to move to a cell so as to maximize his own utility that is defined by both effects of distance from the urban central and population density. The so-called "doughnut phenomenon" as well as growing Densely Inhabited District (DID) can be emulated qualitatively, even though the model bases on a simple self-organism rule.

著者

谷本 潤 萩島 理 諫山 由紀子 岩井 雄志

出版者

社団法人空気調和・衛生工学会

雑誌

空気調和・衛生工学会論文集 (ISSN:0385275X)

巻号頁・発行日

no.161, pp.35-39, 2010-08-05

参考文献数

5

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空調発停行為を含む生活行為のばらつきを考慮したユーティリティデマンドを高時間分解能で予測するTotal Utility Demand Prediction System(TUD-PS)を適用して,集合住宅1住戸における冷暖房の期間負荷および最大負荷の基本特性,居住者の暑さ寒さ恕限度の影響等を検討した.

著者

谷本 潤 藤井 晴行 片山 忠久 萩島 理

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.66, no.547, pp.255-262, 2001

被引用文献数

10 2

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An ultimate objective of this study is not only to depict the reality of academic society, possibly embracing some sort of ambiguous degrade in its stable and established environment, but also to propose a certain strategy to avoid this, overcome this and build a better preferable future. First of all this study, in this report, a really challenging trial to build a human-academic society model dealing with the future prospect of its activity based on so-called Complexity Model, was done. Mathematical framework of the model was precisely described. And actual calculations of its artificial society were carried out on a particular Discrete Type Simulator. Results of simulations led to consider much interesting and marvelous facts.

著者

萩島 理

出版者

九州大学

雑誌

若手研究(A)

巻号頁・発行日

2008

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空調発停行為を含む居住者の生活行為のタイムスケジュールの多様性を考慮し住戸の電力,熱,水等のユーティリティデマンドを高時間分解能で予測する枠組みTotal UtilityDemand Prediction System(TUD-PS)の構築を行った。また、集合住宅を対象としたTUD-PSによる数値計算により冷暖房負荷の確率特性についての検討を行い、平均値で基準化した全熱負荷の確率密度分布が住戸条件や家族構成の違いによらず概ね普遍的な傾向を示し, LDKにおける暖冷房の基準化全熱負荷の確率密度がアーラン分布で近似できることを明らかにした。

著者

萩島 理 谷本 潤 片山 忠久 大原 健志

出版者

日本建築学会

雑誌

日本建築学会計画系論文集 (ISSN:13404210)

巻号頁・発行日

vol.66, no.550, pp.79-86, 2001

被引用文献数

26 10

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As a marvelous predicting and estimating methodology for the Heat Island in an urban area, Architecture-Urban-Soil Simultaneous Simulation Model, AUSSSM was entirely established. The revised AUSSSM is evolved from the former proposed AUSSSM by not only replacing but also newly adding several sub-models. Each sub-model expresses complex phenomenon such as one-dimensional vertical distribution of air temperature, wind velocity and humidity ratio in urban canopy, artificial heat generation from buildings and traffic, evapotranspiration from vegetation, transient evaporation from artificial surfaces shortly after precipitation, dynamic performance of cooling load and HVAC system in buildings. These sub-models have been developed in authors' former works. One of the most important features of AUSSSM is the fact that each sub-model has relatively same level of its accuracy, which leads practically correct and significant solution under the constraint of limited computational resource. And following theoretical description, the Standard Solution assuming a business district in Tokyo was presented.