Comparison between wind tunnel experiments and field measurement values on flow field in real Urban canyons

Takeaki Katsuki, Ayumu Sato, Takenobu Michioka, Aya Hagishima

Research output: Contribution to journalArticle

Abstract

Improvement of outdoor ventilated environment contributes notonlyto energy-saving and suppression of CO2 but also toindoorairqualityand itscomfort.Toconsider outdoor well-ventilatedenvironment, a flow field withinideal urbancanyons hasbeeninvestigated by wind tunnel experiment, but thebehaviorsof turbulence and mean characteristics ofcanyon vortices within real urbancanyons arestill not comprehended. In thisstudy, a wind tunnel experiment fora real apartmentcomplex wasconducted to confirm the reproducibility of flow field within the canyon. The apartment complex islocated at Musashino city,Tokyo, where fieldmeasurement was conducted.Thebuildings witha height more than two-stories were resolved within 200m radius under the modellength ratio of 1/150 was measured using both PIV (ParticleImageVelocimetry) and LDV (Laser Doppler Velocimeter). Thesemeasurements at5 points withinthe urban canyon werecompared with field measurement values. The wind velocities andturbulentintensitiesobtained by bothPIV and LDV fairly agreed withthe field measurement values withintheurban canyons, though a small-scale surface roughnesslike a balcony was notmodeled in the present wind tunnel experiment.

Original languageEnglish
Pages (from-to)313-319
Number of pages7
JournalJournal of Environmental Engineering
Volume77
Issue number674
DOIs
Publication statusPublished - Apr 1 2012

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Wind tunnels
Laser Doppler velocimeters
Flow fields
Experiments
Energy conservation
Vortex flow
Turbulence

All Science Journal Classification (ASJC) codes

  • Environmental Engineering

Cite this

Comparison between wind tunnel experiments and field measurement values on flow field in real Urban canyons. / Katsuki, Takeaki; Sato, Ayumu; Michioka, Takenobu; Hagishima, Aya.

In: Journal of Environmental Engineering, Vol. 77, No. 674, 01.04.2012, p. 313-319.

Research output: Contribution to journalArticle

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