【Matlab实现】风场仿真
空间相关湍流风变化的模拟方法如下[1,2]。实现了两种可能的垂直风廓线和两种可能的风谱。用户可以自由实现新的功能。风的共相干是一个简单的指数衰减，正如Davenport[3]所做的那样。如果在网格中模拟风场，则应使用函数windSim.m（参见示例1和2）。对于更复杂的几何体，如径向网格，函数windSim.m有一个可选参数，包括两个输入（参见Example3.mlx）：第一个包含风特性，第二个包含模拟风变化的节点坐标（参见示例3）。
Content
The submission contains:
- 1 input file INPUT.txt for Example1.m
- 1 input file INPUT_MAST.txt for Example2.m
- 2 input files windData.txt and circle.txt for Example3.m
- The function windSim.m
- 3 examples files Example1.m, Example2.m, Example3.m
- The function coherence.m that computes the co-coherence. Notes:
- Simulating the wind field in a high number of points with a high sampling frequency may take a lot of time.
- This code aims to be highly customizable
A more straightforward version of the present submission has been used to simulate the turbulent wind load on a floating suspension bridge [4].
References
[1] Shinozuka, M., Monte Carlo solution of structural dynamics, Computers and Structures, Vol. 2, 1972, pp. 855 – 874
[2] Deodatis, G., Simulation of ergodic multivariate stochastic processes, Journal of Engineering Mechanics, ASCE, Vol. 122 No. 8, 1996, pp. 778 – 787.
[3] Davenport, A. G. (1961), The spectrum of horizontal gustiness near the ground in high winds. Q.J.R. Meteorol. Soc., 87: 194–211
[4] Wang, J., Cheynet, E., Snæbjörnsson, J. Þ., & Jakobsen, J. B. (2018).Coupled aerodynamic and hydrodynamic response of a long span bridge suspended from floating towers. Journal of Wind Engineering and Industrial Aerodynamics, 177, 19-31.
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