The effect of roof and eave pitch angles on pressure distribution on gable roof low-rise buildings Çatı ve saçak eğim açısının beşik çatılı alçak binalar üzerindeki basınç dağılımına etkisi


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ÖZMEN Y., Kopuz Y.

Journal of the Faculty of Engineering and Architecture of Gazi University, vol.38, no.4, pp.2537-2553, 2023 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 4
  • Publication Date: 2023
  • Doi Number: 10.17341/gazimmfd.824056
  • Journal Name: Journal of the Faculty of Engineering and Architecture of Gazi University
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Art Source, Compendex, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.2537-2553
  • Keywords: Eave, Gable roof, Low-rise building, Pressure coefficient, Turbulence modelling
  • Karadeniz Technical University Affiliated: Yes

Abstract

In this study, the three-dimensional flow fields in the steady state around the low-rise building models with gable roof where the roof pitch angle is 15°, 30° and 45°, and the eave pitch angle is 0°, 15°, 30°, 45° and 60° were computed for the 40000 value of the Reynolds number with Standard k-ε, RNG k-ε and Realizable k-ε turbulence models. The effect of the change in roof and eave slope angles on the flow field was investigated as mean pressure coefficient distributions on the model surfaces. In numerical solutions, wind angle of incidence is considered as 90°. Geometric changes in building models create differences in surface pressure distributions. Differences in surface pressure distributions occur on the windward roof and eave surfaces. The most critical negative peak pressure coefficients are formed on the ridges of 15° inclined roofs. The difference between two peaks on the windward roof surfaces decreases as the angle of the eave’s inclination increases. The numerical results calculated by three different turbulence models are close to each other.