Real-Time Lattice Boltzmann Shallow Waters Method for Breaking Wave Simulations

Ojeda, Jesus; Susín, Antonio

doi:10.1007/978-3-662-45944-7_1

Cited by 2 publications

(2 citation statements)

References 18 publications

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“…Because the visual system simulates large scale ocean waves, the selected rendering method should be fit for large scale ocean waves. Different models can be used to render ocean waves: models from Computational Fluid Dynamics (CFD) [8] - [10], descriptions from video data [11], [12], Perlin noise [13], and the Gerstner wave. When the CFD model is used to animate large scale ocean waves, the computation is complex and the frame rate is low.…”

Section: Related Work 21 the Request Of A Maritime Simulator On Oceamentioning

confidence: 99%

Ocean Wave Rendering with Whitecap in the Visual System of a Maritime Simulator

Chen

Yin

2017

CIT

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The whitecap is an important oceanographic phenomenon. However, existing whitecap rendering methods do not successfully generate realistic whitecaps. To solve this problem, this paper presents a real-time whitecap rendering method applied to the visual system of a maritime simulator. The method takes the vertical acceleration on the wave crest as the criterion of whitecap generation. The Fourier coefficient of the vertical acceleration is provided, and a continuous mathematical model computing the whitecap coverage is built. The vertical acceleration is the variable of the model. The lifetime of the whitecap's existence can be controlled by the parameter of the model, and the parameter is computed with the genetic algorithm. The average of the computed whitecap coverage is equal to the whitecap coverage computed by the stochastic method and is close to the whitecap coverage computed by the empirical formula. The whitecap coverage is used as the blending factor to blend the pixel color of the whitecap texture and that of the sea surface. The presented method has sound theoretical support, with small computational complexity. The rendered whitecap is closer to the description of the Beaufort wind force scale than before.

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Section: Related Work 21 the Request Of A Maritime Simulator On Oceamentioning

confidence: 99%

Ocean Wave Rendering with Whitecap in the Visual System of a Maritime Simulator

Chen

Yin

2017

CIT

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“…A prior result which lead to the first contribution was [OS09]. Contributions 2 to 5 are published in [OS13b,OS13a] and contributions 6 to 8 are included in [OS13c].…”

Section: Contributionsmentioning

confidence: 99%

Efficient algorithms for the realistic simulation of fluids

Ojeda Contreras

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Nowadays there is great demand for realistic simulations in the computer graphics field. Physically-based animations are commonly used, and one of the more complex problems in this field is fluid simulation, more so if real-time applications are the goal. Videogames, in particular, resort to different techniques that, in order to represent fluids, just simulate the consequence and not the cause, using procedural or parametric methods and often discriminating the physical solution. This need motivates the present thesis, the interactive simulation of free-surface flows, usually liquids, which are the feature of interest in most common applications. Due to the complexity of fluid simulation, in order to achieve real-time framerates, we have resorted to use the high parallelism provided by actual consumer-level GPUs. The simulation algorithm, the Lattice Boltzmann Method, has been chosen accordingly due to its efficiency and the direct mapping to the hardware architecture because of its local operations. We have created two free-surface simulations in the GPU: one fully in 3D and another restricted only to the upper surface of a big bulk of fluid, limiting the simulation domain to 2D. We have extended the latter to track dry regions and is also coupled with obstacles in a geometry-independent fashion. As it is restricted to 2D, the simulation loses some features due to the impossibility of simulating vertical separation of the fluid. To account for this we have coupled the surface simulation to a generic particle system with breaking wave conditions; the simulations are totally independent and only the coupling binds the LBM with the chosen particle system. Furthermore, the visualization of both systems is also done in a realistic way within the interactive framerates; raycasting techniques are used to provide the expected light-related effects as refractions, reflections and caustics. Other techniques that improve the overall detail are also applied as low-level detail ripples and surface foam.

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Real-Time Lattice Boltzmann Shallow Waters Method for Breaking Wave Simulations

Cited by 2 publications

References 18 publications

Ocean Wave Rendering with Whitecap in the Visual System of a Maritime Simulator

Ocean Wave Rendering with Whitecap in the Visual System of a Maritime Simulator

Efficient algorithms for the realistic simulation of fluids

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