Natural upward cross-ventilation potential of a leeward sawtooth roof for a single zone building model

J.I. Peren Montero, R. Ramponi, T. van Hooff, B.J.E. Blocken, B.C.C. Leite

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

The ventilation potential of four leeward sawtooth roof shapes (B1, C1, D1 and E1) is evaluated under normal wind incidence angle (θ = 0°). 3D Reynolds-Averaged Navier-Stokes (RANS) Computational Fluid Dynamics (CFD) simulations are performed in combination with five turbulence models and the numerical model is validated with Particle Image Velocimetry (PIV) data from literature. The volume flow rate (m3/s) and the indoor air velocity (m/s) in the occupancy zone (between 0.60 m and 1.70 m height) are analysed. The results show and confirm the hypothesis that a leeward sawtooth roof shape has a considerable potential to improve the volume flow rate and the indoor air velocity. For a normal incidence angle (θ = 0°), the leeward sawtooth roof model D1 yields the highest increase in volume flow rate: 19.6% higher than obtained by the reference leeward sawtooth roof. However, other leeward sawtooth roof shapes and wind incidence angles should be evaluated for a better understanding of the cross-ventilation potential of leeward sawtooth roof buildings.
Original languageEnglish
Title of host publicationProceedings of the 6th International Symposium on Computational Wind Engineering (CWE 2014), 8-12 June 2014, Hamburg, Germany
EditorsH. Schlünzen
PublisherUniversity of Hamburg
Pages1-8
Publication statusPublished - 2014
Event6th International Symposium on Computational Wind Engineering (CWE 2014), June 8-12, 2014, Hamburg, Germany - Hamburg University, Hamburg, Germany
Duration: 8 Jun 201412 Jun 2014
Conference number: 6
http://www.ruhr-uni-bochum.de/cwe2014/

Conference

Conference6th International Symposium on Computational Wind Engineering (CWE 2014), June 8-12, 2014, Hamburg, Germany
Abbreviated titleCWE 2014
CountryGermany
CityHamburg
Period8/06/1412/06/14
Other6th Symposium on Computational Wind Engineering
Internet address

Fingerprint Dive into the research topics of 'Natural upward cross-ventilation potential of a leeward sawtooth roof for a single zone building model'. Together they form a unique fingerprint.

Cite this