Abstract
We present a simple method to generate three-dimensional frozen and non-frozen turbulent wind fields for use in the animation of wind-induced motion. Our approach uses 1/f^_ noise to match the characteristics of natural wind. By employing a noise-based approach, the complexity as well as computational cost is reduced. Additionally, by considering key characteristics of actual wind that are applied in the structural engineering field, our proposed method is able to produce plausible results in outdoor wind field simulations. In this paper, we describe the implementation results of our proposed method and compare them with other existing approaches used to construct turbulent wind fields. The implementation and visualization are carried out for both two- and three-dimensional scenarios and compared with the results of other well-known methods.
Highlights
The mathematical modeling of wind is a challenging task because it involves a high degree of complexity
Ota et al [3] and Hu et al [4] simulated the motion of branches and leaves swaying in a wind field by using noise functions
The most accurate wind field simulations are generated by using Navier–Stokes equations [5, 6]
Summary
The mathematical modeling of wind is a challenging task because it involves a high degree of complexity. There have been several approaches to modeling the wind field in the computer graphics community. Qiang et al [13] expanded 2D simulation of breaking waves into 3D representation by giving motion variation using fBm. Most approaches typically use stochastic approximations for wind simulation and carry out the simulation in the frequency domain. The aim of this study is the identification of an alternative approach for simulating a wind field and the animation of dynamic natural scenes with reduced computational costs while simultaneously producing a realistic visual simulation. The rest of this paper is organized as follows: In Section II, we discuss the key characteristics of wind considered in the structural engineering field.
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