Experimental and Numerical Research of the Flow Features Around the Building Pairs with Different Types
Journal Title: Cumhuriyet Science journal - Year 2018, Vol 39, Issue 4
Abstract
Flow structure on the building is a primary factor in dispersing of air pollutants into and around of the building. Therefore, it is required to determine air motions outside of the building. In this study, flow features at the vicinity of the two building models with rooftop and without rooftop having same dimensions were investigated experimentally and numerically. In the experimental part of the study, flow structures around buildings having dimensions of 5x5x5cm without rooftop and 5x5x5cm with 30o slope and rooftop were examined firstly by placing one by one and afterwards they were analysed by leaving a distance of 13.75cm as binary placed (with rooftop, without rooftop and with and without rooftop) by using Particle Image Velocimetry (PIV). In the numerical part of the study, experimental works carried out by placing binary building was researched by using ANSYS Fluent 12.1 software with k-ε turbulance model as three dimensional, steady and the obtained numerical results were compared with experimental results. Instantaneous velocity fields were firstly obtained at the experiments and then stream lines <Ψ> and vortex peer curves <ω> were plotted by using these datas. Average equivalent velocity curves distributions in the x and y directions were also investigated both for building models. The results showed that the vortexes occurred behind the building for the building without rooftop (model A) were symmetric with each other whereas they were not symmetric at the building with rooftop (model B). Also, the lengths of the vortexes at the rear of the model B increased 7.5% according to model A. The obtained result demonstrated that the rooftop had an effect on the flow structure. However, it was seen that the results were confirmed with a deviation of 3% when compared experimental results with numerical.
Authors and Affiliations
Deniz GÖLBAŞI, Ertan BUYRUK, Koray KARABULUT
Keywords
Related Articles
- EP ID EP488427
- DOI 10.17776/csj.393304
- Views 60
- Downloads 0
Local Spin Induced Magnetism In The Monolayer Nanographene
In this paper, we investigated local spin orientation (up or down) effects on magnetizations of the monolayer nanographene by using effective field theory developed by Kaneyoshi. It is found that the monolayer nanographe...
Eigenvalues of diffusion operators and Prime numbers
In this paper, the relationship between the positive eigenvalues of diffusion operators and prime numbers is investigated. We also propose a Sturm-Liouville problem with Coulomb singularity that shows eigenvalues the dis...
Electrochemical Detection of Epinephrine in The Presence of Ascorbic Acid at Poly (p-Aminobenzene Sulfonic Acid) Modified Sensor
In this study, a rapid, reliable, selective and sensitive simultaneous voltammetric determination of Epinephrine (EP) in the presence of ascorbic acid at poly (p-aminobenzene sulphonic acid, ABSA) modified sensor was aim...
Investigation of Structural, Optical and Photovoltaic Properties of Sb2S3 Thin Films
Sb2S3 thin films were prepared on amorphous glass substrates by chemical bath deposition (CBD) at room temperature. The Sb2S3 thin films were characterized by x-ray diffraction (XRD), Raman spectroscopy, scanning electr...
Source Rock Characterictic of The Kızıldere Clays (ARSUZ-HATAY)
Iskenderun Bay is the extension of the Adana Basin and is a convenient place for hydrocarbon exploration in terms of its formation mechanism. It is necessary to find rocks that can display lithological properties of sour...