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Title :建物内外の速度・圧力場に関する風洞実験及び通風量算出モデル
Title alternative :Wind Tunnel Test and Air-exchange Prediction Model on Cross Ventilation with Open Windows
Authors :村上, 周三
加藤, 信介
赤林, 伸一
水谷, 国男
金, 永徳
富永, 禎秀
Publisher :日本風工学会
Issue Date :1990
Journal Title :風工学シンポジウム論文集
Volume :10
Start Page :155
End Page :160
Abstract :In this paper, the characteristics of air change rate, flow and pressure fields in and aroud building models with wind-induced ventilation are studied using wind tunnel experiment. The results are as follows. 1. The airflow through an open window into the room model still preserves a large part of its mean kinetic energy when it remains inside the room. A major part of its preserved energy is directly convected outside the room model through a leeward window without interior dissipation. 2.Therefore the characteristics of cross ventilation are completely different from those of air infiltration. It is reflected as the decreases of values of ζ in the case of cross ventilation, compared to those values in the case of air infiltration. 3. Power balance model, which is deduced from the 3-D conservation law of kinetic energy, well explains these situation. 4. Lost powers and total pressure loss coefficients, ζ , at various openings are examined by applying the power balance model to the experimental cases. The predicted values of ζ show reasonable results and the usefulness of the power balance model is validated.
Type Local :Conference Paper
Language :jpn
URI :http://hdl.handle.net/10623/29481
Appears in Collections:08 日本風工学会

Please use this identifier to cite or link to this item: http://hdl.handle.net/10623/29481

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