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Wind and Structures
  Volume 2, Number 2, June 1999, pages 105-117
DOI: http://dx.doi.org/10.12989/was.1999.2.2.105
 


Simulation of wind process by spectral representation method and application to cooling tower shell
Choi, Chang-Koon and Noh, Hyuk-Chun

 
Abstract
    The various spectral density functions of wind are applied in the wind process simulation by the spectral representation method. In view of the spectral density functions, the characteristics of the simulated processes are compared. The ensemble spectral density functions constructed from the simulated sample processes are revealed to have the similarity not only in global shape but also in the maximum values with the target spectral density functions with a high accuracy. For the correlation structure to be satisfied in the circumferential direction on the cooling tower shell, a new formula is suggested based on the mathematical expression representing the circumferential distribution of the wind pressure on the cooling tower shell. The simulated wind processes are applied in the dynamic analysis of cooling tower shell in the time domain and the fluctuating stochastic behavior of the cooling tower shell is investigated.
 
Key Words
     simulation; spectral density function; spectral representation; cooling tower shell.
 
Address
Department of Civil Engineering, Korea Advanced Institute of Science and Technology, Taejon 305-701, Korea
 

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