Wind-tunnel experiment and numerical analysis on flow and dispersion in street canyons

Peng Yi Cui; Zhuo Li; Wen Quan Tao

Wind-tunnel experiment and numerical analysis on flow and dispersion in street canyons

Peng Yi Cui
, Zhuo Li
, Wen Quan Tao

Tongji University

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Street canyons are typical urban building structures. Recently, many studies have concerned on the flow and pollution dispersion characteristics around these urban structures. The similarity criteria of flow and dispersion in wind-tunnel experiments were investigated by CFD technology. The results show that the velocity distribution would be independent of Reynolds number for the structure studied if the building Reynolds number (Re_H) is over the critical value ReH,crit = 3×10⁴. Furthermore, if the density Froude number (Fr_ρ) of the model is equal to that of the prototype, the similarity criteria of flow and dispersion would be mostly satisfied. Based on the Re independence and Fr_ρ equality, a good agreement was achieved between numerical simulation and wind-tunnel experiments.

Original language	English
Pages (from-to)	2491-2495
Number of pages	5
Journal	Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics
Volume	35
Issue number	12
State	Published - 1 Dec 2014
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 11 Sustainable Cities and Communities

Keywords

Numerical simulation
Similarity criterion
Street canyon
Wind-tunnel experiment

Cite this

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title = "Wind-tunnel experiment and numerical analysis on flow and dispersion in street canyons",

abstract = "Street canyons are typical urban building structures. Recently, many studies have concerned on the flow and pollution dispersion characteristics around these urban structures. The similarity criteria of flow and dispersion in wind-tunnel experiments were investigated by CFD technology. The results show that the velocity distribution would be independent of Reynolds number for the structure studied if the building Reynolds number (ReH) is over the critical value ReH,crit = 3×104. Furthermore, if the density Froude number (Frρ) of the model is equal to that of the prototype, the similarity criteria of flow and dispersion would be mostly satisfied. Based on the Re independence and Frρ equality, a good agreement was achieved between numerical simulation and wind-tunnel experiments.",

keywords = "Numerical simulation, Similarity criterion, Street canyon, Wind-tunnel experiment",

author = "Cui, \{Peng Yi\} and Zhuo Li and Tao, \{Wen Quan\}",

year = "2014",

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language = "英语",

volume = "35",

pages = "2491--2495",

journal = "Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics",

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TY - JOUR

T1 - Wind-tunnel experiment and numerical analysis on flow and dispersion in street canyons

AU - Cui, Peng Yi

AU - Li, Zhuo

AU - Tao, Wen Quan

PY - 2014/12/1

Y1 - 2014/12/1

N2 - Street canyons are typical urban building structures. Recently, many studies have concerned on the flow and pollution dispersion characteristics around these urban structures. The similarity criteria of flow and dispersion in wind-tunnel experiments were investigated by CFD technology. The results show that the velocity distribution would be independent of Reynolds number for the structure studied if the building Reynolds number (ReH) is over the critical value ReH,crit = 3×104. Furthermore, if the density Froude number (Frρ) of the model is equal to that of the prototype, the similarity criteria of flow and dispersion would be mostly satisfied. Based on the Re independence and Frρ equality, a good agreement was achieved between numerical simulation and wind-tunnel experiments.

AB - Street canyons are typical urban building structures. Recently, many studies have concerned on the flow and pollution dispersion characteristics around these urban structures. The similarity criteria of flow and dispersion in wind-tunnel experiments were investigated by CFD technology. The results show that the velocity distribution would be independent of Reynolds number for the structure studied if the building Reynolds number (ReH) is over the critical value ReH,crit = 3×104. Furthermore, if the density Froude number (Frρ) of the model is equal to that of the prototype, the similarity criteria of flow and dispersion would be mostly satisfied. Based on the Re independence and Frρ equality, a good agreement was achieved between numerical simulation and wind-tunnel experiments.

KW - Numerical simulation

KW - Similarity criterion

KW - Street canyon

KW - Wind-tunnel experiment

UR - https://www.scopus.com/pages/publications/85013847742

M3 - 文章

AN - SCOPUS:85013847742

SN - 0253-231X

VL - 35

SP - 2491

EP - 2495

JO - Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics

JF - Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics

IS - 12

ER -

Wind-tunnel experiment and numerical analysis on flow and dispersion in street canyons

Abstract

UN SDGs

Keywords

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