Experimental and numerical evaluation of wind flow in a compact urban area : validation and sensitivity analysis

N. Antoniou, H. Montazeri, H. Wigo, M. Neophytou, B. Blocken, M. Sandberg

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

Samenvatting

Given the rapid increase of urbanization and urban population worldwide, the urban air quality, wind and thermal comfort have become increasingly important matters. In this perspective, an accurate prediction of urban wind flow is of high importance. The 3D steady Reynolds-Averaged Navier-Stokes (RANS) approach is widely used in CFD simulations of wind flow in urban areas. However, there is a lack of basic knowledge on the performance of 3D steady RANS for this application. This paper presents a systematic evaluation of 3D steady RANS CFD simulations of wind flow in a compact heterogeneous urban area, most commonly encountered in old historical city centers. In addition, the impact of different turbulence models is investigated. The study area selected for this investigation is the old city of Nicosia, Cyprus. The evaluation is based on validation with wind-tunnel measurements of mean wind speed performed in an atmospheric boundary layer wind-tunnel at scale 1:250. The results show that steady RANS, in spite of its limitations, can accurately reproduce the mean wind speed distributions. For all of the turbulence models the average deviations of all the measuring points, from the wind-tunnel measurements are within 10%, where none of the models is superior.
Originele taal-2Engels
Titel8th International Colloquium on Bluff Body Aerodynamics and Applications, 7-11 June 2016, Boston, Massachusetts
Aantal pagina's10
StatusGepubliceerd - 2016
Evenement8th International Colloquium on Bluff Body Aerodynamics and Applications (BBAA VIII), June 7-11, 2016, Northeastern University, Boston, Massachusetts, USA - Northeastern University, Boston, Verenigde Staten van Amerika
Duur: 7 jun 201611 jun 2016
Congresnummer: VIII
http://www.northeastern.edu/bbaa8/

Congres

Congres8th International Colloquium on Bluff Body Aerodynamics and Applications (BBAA VIII), June 7-11, 2016, Northeastern University, Boston, Massachusetts, USA
Verkorte titelBBAA VIII
LandVerenigde Staten van Amerika
StadBoston
Periode7/06/1611/06/16
Internet adres

Vingerafdruk Duik in de onderzoeksthema's van 'Experimental and numerical evaluation of wind flow in a compact urban area : validation and sensitivity analysis'. Samen vormen ze een unieke vingerafdruk.

  • Citeer dit

    Antoniou, N., Montazeri, H., Wigo, H., Neophytou, M., Blocken, B., & Sandberg, M. (2016). Experimental and numerical evaluation of wind flow in a compact urban area : validation and sensitivity analysis. In 8th International Colloquium on Bluff Body Aerodynamics and Applications, 7-11 June 2016, Boston, Massachusetts [210]