Farklı konfı̇gürasyonlardakı̇ bı̇nalarda rüzgâr dı̇rencı̇ ve ısı adası oluşumunun sayısal incelenmesı

Yıl 2024, Cilt: 30 Sayı: 6, 729 - 736, 29.11.2024

Ömer Faruk Can

Öz

Artan nüfus yoğunluğunun bir sonucu olarak, son yıllarda şehirlerde
yerleşim alanlarında sorunlar ortaya çıkmıştır. Teknolojinin
gelişmesiyle birlikte mühendisler artan talebi karşılamak için daha
yüksek binaların yapımına yönelmişlerdir. Sonuç olarak, binalar
arasında yeterli mesafe olmadığı takdirde ısı adası oluşumu kaçınılmaz
hale gelmektedir. Bu çalışmada binalarda ısı adası oluşumu ve rüzgar
etkilerinin sayısal olarak incelenmesi amaçlanmıştır. Modelleme işlemi
için Ansys Cfx yazılım programı kullanılmıştır. Isı adası oluşumunu
incelemek için altı farklı bina konfigürasyonu analiz edilmiştir. Bina
yükseklikleri ve binalar arası mesafeler farklı en-boy oranları için
değiştirilmiştir. Çalışma sonucunda, binalar arasındaki mesafe
azaldıkça daha fazla ısı adası oluştuğu görülmüştür. Çalışma
sonucunda ilk dört durumda daha fazla ısı adası oluşumu gözlenmiştir
(𝐶1 − −𝐶4). En uygun bina diziliminin 𝐶5 ve 𝐶6 olduğu görülmüştür.
Sürüklenme katsayıları (𝐶𝑑) farklı bina dizilimleri için 1.35 ile 1.65
aralığında elde edilmiştir. Rüzgarın bina üzerindeki soğutma etkileri
sonucunda binanın ortalama sıcaklığında 2 ila 5 derecelik bir düşüş
gözlemlenmiştir. Binalarda sadece beton kullanıldığında ortalama ısı
transfer katsayısı (68 W/mK) olmaktadır. En iyi yalıtım cam yünü
kullanıldığında gerçekleşmiştir

Anahtar Kelimeler

Isı adası, Sayısal modelleme, Rüzgar etkisi, Kentsel planlama, Yalıtım malzemesi

Numerical investigation of wind resistance and heat island formation in buildings of different configurations

Öz

As a result of increasing population density, problems in residential
areas have emerged in cities in recent years. With the development of
technology, engineers have turned to the construction of taller buildings
to meet the increasing demand. As a result, heat island formation
becomes inevitable if there is not enough distance between buildings. In
this study, it is aimed to numerically investigate the heat island
formation and wind effects in buildings. The Ansys Cfx software
program was used for the modeling process. Six different building
configurations were analyzed to investigate heat island formation.
Building heights and inter-building distances were varied for different
aspect ratios. As a result of the study, more heat islands formed when
the distance between buildings was smaller. As a result of the study,
more heat island formation was observed in the first four cases
(𝐶1 − −𝐶4) 𝐶5 and 𝐶6 were found to be the most suitable building
sequences. drag coefficients (Cd) were obtained in the range of 1.35 to
1.65 for different building sequences. As a result of the cooling effects of
the wind on the building, a decrease of 2 to 5 degrees in the average
temperature of the building was observed. The average heat transfer
coefficient is (68 W/mK) when only concrete is used in buildings. The
best insulation was realized when glass wool was used.

Anahtar Kelimeler

Heat island, Numerical modeling, Wind effect, Urban planning, Insulation material

Kaynakça

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