Numerical simulation of tall buildings with various shape factors and investigation of its surrounding effect

2018 ◽  
Author(s):  
S. A. Prabhaharan ◽  
G. Vinayagamurthy ◽  
A. Senthilnathan ◽  
J. Adhithya
Keyword(s):  
Numerical Simulation ◽  
Tall Buildings ◽  
Shape Factors

Numerical Simulation Research about Group High-Rise Buildings around Wind Environment

2012 ◽  
Vol 446-449 ◽  
pp. 657-660
Author(s):  
Ling Huang ◽  
Xia Bing Liu
Keyword(s):  
Numerical Simulation ◽  
Turbulence Model ◽  
Wind Tunnel Test ◽  
Tall Buildings ◽  
Cfd Simulations ◽  
Wind Environment ◽  
Simulation Research ◽  
High Rise ◽  
The Common ◽  
Relative Wind

Using the common classical turbulence model, k-ε turbulence model which has fairly common usability，CFD simulations for group high-rise building and wind-induced static interference between tall buildings, are conducted. Based on the comparison between the CFD and relative wind tunnel test ,it shows that: the method of numerical simulation have better accuracy, could be used for group high-rise buildings study of static interference.

Study on Wind Load Characteristics of a Super Tall Building Based on Numerical Simulation

2014 ◽  
Vol 578-579 ◽  
pp. 810-813 ◽  
Author(s):  
Lun Hai Zhi ◽  
Shu Ya Jiang ◽  
Chun Ling Lu
Keyword(s):  
Numerical Simulation ◽  
Spectral Characteristics ◽  
Tall Buildings ◽  
Tall Building ◽  
Local Wind ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Load Characteristics ◽  
Fluctuating Wind ◽  
Simulation Scheme

This paper present some selected numerical results of a typical super-tall building based on a new Large Eddy Simulation scheme. The spatial correlation of local wind forces were presented and discussed in detail. The probabilistic characteristics of fluctuating wind loads were evaluated. Furthermore, the along-wind and across-wind spectral characteristics were studied and compared with the von Karman spectrum. The output of this study is expected to be of considerable interest and practical use to professionals and researchers involved in the design of super-tall buildings.

scholarly journals Numerical Simulation of Non-Spherical Submicron Particle Acceleration and Focusing in a Converging–Diverging Micronozzle

2021 ◽  
Vol 12 (1) ◽  
pp. 343
Author(s):  
Yanru Wang ◽  
Jiaxin Shen ◽  
Zhaoqin Yin ◽  
Fubing Bao
Keyword(s):  
Numerical Simulation ◽  
Particle Acceleration ◽  
Flow Field ◽  
Shape Factor ◽  
Particle Density ◽  
Submicron Particles ◽  
Submicron Particle ◽  
Shape Factors ◽  
Focusing Effect ◽  
Aerodynamic Focusing

Submicron particles transported by a Laval-type micronozzle are widely used in micro- and nano-electromechanical systems for the aerodynamic scheme of particle acceleration and focusing. In this paper, the Euler–Lagrangian method is utilized to numerically study non-spherical submicron particle diffusion in a converging–diverging micronozzle flow field. The influence of particle density and shape factor on the focusing process is discussed. The numerical simulation shows how submicron particle transporting with varying shape factors and particle density results in different particle velocities, trajectories and focusing in a micronozzle flow field. The particle with a larger shape factor or larger density exhibits a stronger aerodynamic focusing effect in a supersonic flow field through the nozzle. In the intersection process, as the particle size increases, the position of the particle trajectory intersection moves towards the throat at first and then it moves towards the nozzle outlet. Moreover, the influence of the thermophoretic force of the submicron particle on the aerodynamic focusing can be ignored. The results will be beneficial in technological applications, such as micro-thrusters, microfabrication and micro cold spray.

High-Rise Residential Complex Wind Aerodynamics Simulation

2015 ◽  
Vol 713-715 ◽  
pp. 1729-1732 ◽  
Author(s):  
Oleg O. Egorychev ◽  
Sergey I. Dubinsky ◽  
Anastasia N. Fedosova
Keyword(s):  
Numerical Simulation ◽  
Complex Shape ◽  
Peak Pressure ◽  
Tall Buildings ◽  
Wind Loads ◽  
Aerodynamic Coefficients ◽  
Aerodynamic Forces ◽  
High Rise

Existing regulatory and regulated methods do not contain recommendations on the appointment of the aerodynamic coefficients for the complex shape of tall buildings, however, for such buildings wind loads can be decisive. In this paper, the problem of the calculated characteristics giving is solved by numerical simulation, the estimated pressure indicates average components of the aerodynamic forces and moments are calculated, localization of peak pressure values are defined.

Study on wind load shape factor of long-span stadium roof

2020 ◽  
Vol 23 (11) ◽  
pp. 2333-2342
Author(s):  
Jian Guo ◽  
Minjun Zhu ◽  
Chengjie Hu
Keyword(s):  
Numerical Simulation ◽  
Pressure Distribution ◽  
Shape Factor ◽  
Wind Load ◽  
Design Stage ◽  
Bottom Surface ◽  
Shape Factors ◽  
Maximum Wind ◽  
Long Span ◽  
Load Shape

A long-span stadium roof has always been a wind load sensitive system, given its usual complex curved surface. However, there is no definite method for calculating the wind load shape factor of the complex building in the code. Based on this, the standard [Formula: see text] model was applied to the computational fluid dynamics numerical simulation of a long-span stadium roof at the wind attack angles of 0°–180°. The pressure distribution on the top and bottom surfaces of the stadium roof and the wind load shape factor were obtained by numerical simulation. The results show that the negative pressure was dominant on the top surface of the roof and the positive pressure was dominant on the bottom surface of the stadium at the wind attack angle of 0°. The ring-shaped curtain wall made the wind field environment more complicated, mainly under the wind attack angles of 45° and 180°. Because of the dip angles at both ends of the roof, the wind pressure distribution at both ends of the roof was opposite to the main region. The maximum wind load shape factors of each region were negative. In addition, the maximum wind load shape factor was at 45°, which was −1.1. The maximum wind load shape factors in regions of R13–R19 were larger, which should be paid attention in design stage. In general, the wind load shape factors were large in the central region and small at both ends. The wind load shape factors of the roof were bounded by 90°, showing an anti-symmetric trend.

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