A validation study for CFD simulation of a simplified urban model

Ahmad Faiz Mohammad, Sheikh Ahmad Zaki, Mohamed Sukri Mat Ali, Aya Hagishima, Azli Abd Razak

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

Abstract

A proper setting of boundary conditions is a standard upon which simulation results are justified. This study is specifically designed to simulate airflow over a repeating unit of simplified urban models with the application of periodic boundary condition. Similar setting of boundary conditions is used for all models which are of square layout with 25% packing density. The models are constructed with such that the initial velocity field is uniform throughout its internal domain. The results show that different domain heights of 4h and 5h (h as the building height) do not affect the spatial averaging of velocity profiles. In terms of the number of grids per building height, a finer meshing of 32 grids produce more accurate results of velocities and turbulence intensities compared with those of 25 grids when validated against the previous direct numerical simulation (DNS) data. Nevertheless, these criteria depend upon longer averaging period for better estimation of flow statistics. The boundary condition setting used in this preliminary study is nevertheless capable of producing current results comparable to past data although future works should focus on optimizing the important criteria in a simulation such as domain height, grid numbers, and averaging time.

Original languageEnglish
Title of host publicationAchievements in Engineering Sciences
PublisherTrans Tech Publications
Pages1795-1799
Number of pages5
ISBN (Print)9783038350842
DOIs
Publication statusPublished - Jan 1 2014
Event3rd International Conference on Manufacturing Engineering and Process, ICMEP 2014 - Seoul, Korea, Republic of
Duration: Apr 10 2014Apr 11 2014

Publication series

NameApplied Mechanics and Materials
Volume548-549
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Other

Other3rd International Conference on Manufacturing Engineering and Process, ICMEP 2014
CountryKorea, Republic of
CitySeoul
Period4/10/144/11/14

Fingerprint

Computational fluid dynamics
Boundary conditions
Direct numerical simulation
Turbulence
Statistics

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Mohammad, A. F., Zaki, S. A., Ali, M. S. M., Hagishima, A., & Razak, A. A. (2014). A validation study for CFD simulation of a simplified urban model. In Achievements in Engineering Sciences (pp. 1795-1799). (Applied Mechanics and Materials; Vol. 548-549). Trans Tech Publications. https://doi.org/10.4028/www.scientific.net/AMM.548-549.1795

A validation study for CFD simulation of a simplified urban model. / Mohammad, Ahmad Faiz; Zaki, Sheikh Ahmad; Ali, Mohamed Sukri Mat; Hagishima, Aya; Razak, Azli Abd.

Achievements in Engineering Sciences. Trans Tech Publications, 2014. p. 1795-1799 (Applied Mechanics and Materials; Vol. 548-549).

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

Mohammad, AF, Zaki, SA, Ali, MSM, Hagishima, A & Razak, AA 2014, A validation study for CFD simulation of a simplified urban model. in Achievements in Engineering Sciences. Applied Mechanics and Materials, vol. 548-549, Trans Tech Publications, pp. 1795-1799, 3rd International Conference on Manufacturing Engineering and Process, ICMEP 2014, Seoul, Korea, Republic of, 4/10/14. https://doi.org/10.4028/www.scientific.net/AMM.548-549.1795
Mohammad AF, Zaki SA, Ali MSM, Hagishima A, Razak AA. A validation study for CFD simulation of a simplified urban model. In Achievements in Engineering Sciences. Trans Tech Publications. 2014. p. 1795-1799. (Applied Mechanics and Materials). https://doi.org/10.4028/www.scientific.net/AMM.548-549.1795
Mohammad, Ahmad Faiz ; Zaki, Sheikh Ahmad ; Ali, Mohamed Sukri Mat ; Hagishima, Aya ; Razak, Azli Abd. / A validation study for CFD simulation of a simplified urban model. Achievements in Engineering Sciences. Trans Tech Publications, 2014. pp. 1795-1799 (Applied Mechanics and Materials).
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