Mean wind flow field around idealized block arrays with various aspect ratios

Azli Abd Razak, Aya Hagishima, Naoki Ikegaya, Mohd Faizal Mohamad, Sheikh Ahmad Zaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

This study investigates the characteristic of spatially averaged mean velocity profile and the flow pattern within urban canopy layer especially in pedestrian level using CFD technique. Large eddies simulation (LES) was used to perform a series of simulation of the flow around block arrays with staggered arrangement under various conditions of aspect ratio, αp (roof-to-frontal area ratio) from 0.33 to 3.0. The spatially-average profiles of both mean wind speed and streamwise velocity over various block arrays were compared with each other. The analysis clarified the following two facts. 1) The vertical mean flow structure inside the canyon change due to change a plan area ratio and block aspect ratio. 2) The horizontal mean flow structure around the block change if pedestrian level change form z = 0.05h to z = 0.25h. This can be translated to the effect of high-rise building to the flow around the building.

Original languageEnglish
Title of host publicationAdvances in Manufacturing and Mechanical Engineering
Pages767-773
Number of pages7
DOIs
Publication statusPublished - 2013
EventInternational Conference on Advances in Mechanical Engineering 2013, ICAME 2013 - Malacca, Malaysia
Duration: Aug 28 2013Aug 29 2013

Publication series

NameApplied Mechanics and Materials
Volume393
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Other

OtherInternational Conference on Advances in Mechanical Engineering 2013, ICAME 2013
CountryMalaysia
CityMalacca
Period8/28/138/29/13

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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