Animating Wall-bounded Turbulent Smoke via Filament-Mesh Particle-Particle Method

	Animating Wall-bounded Turbulent Smoke via Filament-Mesh Particle-Particle Method
	Xiangyun Liao; Weixin Si; Zhiyong Yuan; Hanqiu Sun; Jing Qin; Qiong Wang; Pheng-Ann Heng
刊名	IEEE Transactions on Visualization and Computer Graphics
	2017
文献子类	期刊论文
英文摘要	Turbulent vortices in smoke flows are crucial for a visually interesting appearance. Unfortunately, it is challenging to efficiently simulate these appealing effects in the framework of vortex filament methods. The vortex filaments in grids scheme allows to efficiently generate turbulent smoke with macroscopic vortical structures, but suffers from the projection-related dissipation, and thus the small-scale vortical structures under grid resolution are hard to capture. In addition, this scheme cannot be applied in wall-bounded turbulent smoke simulation, which requires efficiently handling smoke-obstacle interaction and creating vorticity at the obstacle boundary. To tackle above issues, we propose an effective filament-mesh particle-particle (FMPP) method for fast wall-bounded turbulent smoke simulation with ample details. The Filament-Mesh component approximates the smooth long-range interactions by splatting vortex filaments on grid, solving the Poisson problem with a fast solver, and then interpolating back to smoke particles. The Particle-Particle component introduces smoothed particle hydrodynamics (SPH) turbulence model for particles in the same grid, where interactions between particles cannot be properly captured under grid resolution. Then, we sample the surface of obstacles with boundary particles, allowing the interaction between smoke and obstacle being treated as pressure forces in SPH. Besides, the vortex formation region is defined at the back of obstacles, providing smoke particles flowing by the separation particles with a vorticity force to simulate the subsequent vortex shedding phenomenon. The proposed approach can synthesize the lost small-scale vortical structures and also achieve the smoke-obstacle interaction with vortex shedding at obstacle boundaries in a lightweight manner. The experimental results demonstrate that our FMPP method can achieve more appealing visual effects than vortex filaments in grids scheme by efficiently simulating more vivid thin turbulent features.
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/11594]
专题	深圳先进技术研究院_集成所
作者单位	IEEE Transactions on Visualization and Computer Graphics
推荐引用方式 GB/T 7714	Xiangyun Liao,Weixin Si,Zhiyong Yuan,et al. Animating Wall-bounded Turbulent Smoke via Filament-Mesh Particle-Particle Method[J]. IEEE Transactions on Visualization and Computer Graphics,2017.
APA	Xiangyun Liao.,Weixin Si.,Zhiyong Yuan.,Hanqiu Sun.,Jing Qin.,...&Pheng-Ann Heng.(2017).Animating Wall-bounded Turbulent Smoke via Filament-Mesh Particle-Particle Method.IEEE Transactions on Visualization and Computer Graphics.
MLA	Xiangyun Liao,et al."Animating Wall-bounded Turbulent Smoke via Filament-Mesh Particle-Particle Method".IEEE Transactions on Visualization and Computer Graphics (2017).