We present a particle-based method to simulate and visualize the interaction of knitwear with fluids. The knitwear is modeled using spring-mass systems and the fluid is modeled using the smoothed particle hydrodynamics method. Two-way coupling is achieved by considering surface tension, capillary, and interparticle forces between the fluid and knitwear. The simulation of fluid and knitwear particles is performed on the graphics processing unit. Photorealistic rendering of knitwear and fluid is achieved by using a hardware-accelerated rasterization-based rendering technique. Our method is able to simulate and visualize the macro-and microstructure of free-form knitwear and reflective and refractive characteristics of the fluid surface.Keywords Physically-based modeling · Fluid simulation · Particle-based modeling · Smoothed particle hydrodynamics · Knitwear · Graphics processing unit · Lumislice Electronic supplementary material The online version of this article
Abstract.This paper presents a neighbor-search technique to be used in a GPU-based particle simulation framework. Neighbor searching is usually the most computationally expensive step in particle simulations. The usual approach is to subdivide the simulation space to speed up neighbor search. Here, we present a grid-based neighbor-search technique designed to work on programmable graphics hardware.
a) tsim = 3 s (b) tsim = 16 s (c) tsim = 16 s (detergent in blue) Figure 1: The pan's surface is cleansed from grease (orange) due to detergent concentration (blue in 1(c)) on the fluid's surface.
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