Browsing by Author "Bayraktar, S."

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    GPU-based neighbor-search algorithm for particle simulations
    (Taylor & Francis Inc., 2009) Bayraktar, S.; Güdükbay, Uğur; Özgüç, B.
    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.
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    Particle-based simulation and visualization of fluid flows through porous media
    (Springer-Verlag, 2010) Bayraktar, S.; Güdükbay, Uğur; Özgüç, B.
    We propose a method of fluid simulation where boundary conditions are designed in such a way that fluid flow through porous media, pipes, and chokes can be realistically simulated. Such flows are known to be low Reynolds number incompressible flows and occur in many real life situations. To obtain a high quality fluid surface, we include a scalar value in isofunction. The scalar value indicates the relative position of each particle with respect to the fluid surface.
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    Particle-based simulation of the interaction between fluid and knitwear
    (2014) Güdükbay, Uğur; Bayraktar, S.; Koca, Ç.; Özgüç, B.
    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. © 2012 Springer-Verlag London Limited.