Real-time Height-field Simulation of Sand and Water Mixtures
Real-time Height-field Simulation of Sand and Water Mixtures
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DOI：
10.1145/3610548.3618159
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发表时间：
2023-12
期刊：
影响因子：
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通讯作者：
Haozhe Su;Siyu Zhang;Zherong Pan;Mridul Aanjaneya;Xifeng Gao;Kui Wu
中科院分区：
文献类型：
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作者：
Haozhe Su;Siyu Zhang;Zherong Pan;Mridul Aanjaneya;Xifeng Gao;Kui Wu
我们提出了一种基于高度场的沙水混合物实时模拟方法。受浅水假设的启发，我们的方法扩展了控制方程，以使用高度场处理沙和水的两相流。我们的深度积分控制方程可以模拟沙子的弹塑性行为，以及沙子与水的混合现象，例如摩擦、扩散、饱和和动量交换。我们进一步提出了一种算子分割时间积分器，它对 GPU 友好并且在中等时间步长下稳定。我们在一组涉及大型异质材料的基准场景中评估了我们的方法，其中我们基于 GPU 的算法以实时帧速率运行。我们的方法在保真度和性能之间实现了理想的权衡，为实时应用程序带来了前所未有的沉浸式体验。
We propose a height-field-based real-time simulation method for sand and water mixtures. Inspired by the shallow-water assumption, our approach extends the governing equations to handle two-phase flows of sand and water using height fields. Our depth-integrated governing equations can model the elastoplastic behavior of sand, as well as sand-water-mixing phenomena such as friction, diffusion, saturation, and momentum exchange. We further propose an operator-splitting time integrator that is both GPU-friendly and stable under moderate time step sizes. We have evaluated our method on a set of benchmark scenarios involving large bodies of heterogeneous materials, where our GPU-based algorithm runs at real-time frame rates. Our method achieves a desirable trade-off between fidelity and performance, bringing an unprecedentedly immersive experience for real-time applications.