Surface Wind Pressure Distribution of Molten-Salt Power Tower by CFD Analysis

Open ended cantilevered roof is different from enclosed roof, because its change of wind pressure distribution is complex, and the wind directions have great influence on it. Up to now, for the characteristics of the structure are very complicated, there is no appropriate wind load model can be used in design, especially under typhoon, a specific wind field. So it is necessary to study the characteristics of wind load on open ended cantilevered roofs of typhoon. Using FLUENT and Computational Fluid Dynamics technology, based on the conventional, Tianpu’s and Shiyuan’s turbulence intensity of the typhoon scenario, a numerical simulation of wind flow around a large-span cantilevered roof was carried out. Analyzed different wind angles of the wind pressure distribution regularities on large-span cantilevered roof. The paper determined the distribution of the surface wind pressure coefficient for the cantilevered roofs, as well as the wind-sensitive parts of structures.

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Distribution Rule Analysis and Research of Wind Loads of Stadium by Numerical Simulation

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.256-259.826 ◽

2012 ◽

Vol 256-259 ◽

pp. 826-830

Author(s):

Zhi Xiang Yin ◽

Shuang Zhang

Keyword(s):

Numerical Simulation ◽

Wind Tunnel ◽

Pressure Distribution ◽

Simulation Analysis ◽

Surface Wind ◽

Wind Pressure ◽

Wind Loads ◽

Distribution Law ◽

Long Span ◽

Distribution Rule

The most of Long-span stadium roofs are complex surface, the load norms cannot put forward the design requirements clearly in frequently. Determine wind loads need to use other means for help, while the numerical wind tunnel is one of the commonly be used to research methods in recent years. This paper introduces about the numerical simulation method of a long-span stadium roof surface wind pressure distribution , and based on FLUENT platform, a gymnasium as an example, the shear stress transport k - ω model (referred to as the SST k - ω model) on the roof surface wind pressure distribution of numerical wind tunnel simulation, analysis stadium roof surface pressure distribution law based on different wind directions.

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Study on Surface Pressure Distribution Test of Stayed-Cable Using Aerodynamic Measure

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1065-1069.851 ◽

2014 ◽

Vol 1065-1069 ◽

pp. 851-855

Author(s):

Sai Gong ◽

Peng Tang ◽

Cheng Kun Wang

Keyword(s):

Pressure Distribution ◽

Surface Pressure ◽

Surface Wind ◽

Three Dimensional ◽

High Amplitude ◽

Control Measures ◽

Wind Pressure ◽

Aerodynamic Coefficient ◽

Surface Pressure Distribution ◽

Wind Induced Vibration

Stayed-cable was being considered as an important component of cable-stayed bridge, with characteristics of its low quality, stiffness and damping, among which rain-wind-induced vibration brings the most serious damage in its high amplitude because of its easy conditions to meet. This paper based on the theory of stayed-cable rain-wind-induced vibration, Through comparing different aerodynamic control measures in wind pressure test of ZhiJiang Bridge cable, this paper analyses the variation rules of two and three dimensional cable surface pressure distribution in different aerodynamic measures and cable aerodynamic coefficient in different surface conditions. The results show that: the wind angle influenced surface wind pressure coefficients and aerodynamic coefficient larger, especially between 25 ° and40 °; when the water was between 40 ° and70 °, the aerodynamic coefficient changed obviously, may happen galloping; It recommend that the cable helix parameter K1 was larger and K2 was between 0.01 and 0.03.

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Numerical Simulation of Wind Pressure Distribution on Regular Mega-Frame Surface

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.639-640.485 ◽

2013 ◽

Vol 639-640 ◽

pp. 485-488 ◽

Cited By ~ 1

Author(s):

Yao Xiong

Keyword(s):

Numerical Simulation ◽

Pressure Distribution ◽

Surface Wind ◽

Wind Load ◽

Wind Pressure ◽

Frame Structure ◽

Story Structure ◽

High Rise ◽

Tunnel Model ◽

Simulation Calculation

One of the critical loads in engineering design is wind load, especially for high-rise structure or multi-story structure. In order to forecast the distribution of wind effects on structure, how to accurately predict the building surface wind pressure distribution is very important. Using the wind tunnel model test and numerical simulation calculation methods, the surface wind load on the mega-frame structure were comparatively analyzed and researched in this paper. The results show that combined the realized к-ε model with the standard wall function will not only satisfy the mega-frame structure surface wind pressure value requirement, but also provide complete wind filed around, which could provide meaningful information for further research on wind load.

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