TY - JOUR
ID - 4949
TI - Determination of wind pressure coefficients on spherical domes called onion domes (defined in standard 400)
JO - Amirkabir Journal of Civil Engineering
JA - CEEJ
LA - en
SN - 2588-297X
AU - gholizadeh, reza
AU - sadeghi, hossein
AD - Department of Civil Engineering, Damghan Branch, Islamic Azad University, Damghan, Iran
Y1 - 2023
PY - 2023
VL - 54
IS - 12
SP - 4697
EP - 4708
KW - Wind pressure coefficient
KW - computational fluid dynamics
KW - Wind force
KW - Wind tunnel
KW - onion dome
DO - 10.22060/ceej.2022.21115.7626
N2 - Wind force is one of the lateral loads in the design of structures. One of the parameters for calculating wind force on structures is called pressure coefficient (CP), which is related to the geometry of the building. The design codes provide the pressure coefficient of conventional buildings. In the absence of these coefficients in the design codes, wind tunnel testing or numerical modeling should be used. Numerical method based on computational fluid dynamics (CFD) has been used in modeling to simulate wind flow. The model used in computational fluid dynamics in this research is the K-ε (Standard) model. The sphere is modeled with a diameter of 50 cm and the results of numerical modeling are compared with the results of the wind tunnel test presented in reference [2]. The dome is made with different height to span ratio, with increasing height-to-span ratio to maximum The negative pressure (suction) obtained at an angle of 90o increases as this value reaches –2.24 in dome 122, and it is also observed that at an angle of 150o to 180 o the pressure coefficient is constant for all domes. Finally, the equation the wind pressure coefficients of this type of dome is presented.
UR - https://ceej.aut.ac.ir/article_4949.html
L1 - https://ceej.aut.ac.ir/article_4949_6aa11f15cead7cdee2879796519191cc.pdf
ER -