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      • Bilkent Theses
      • Theses - Department of Computer Engineering
      • Dept. of Computer Engineering - Master's degree
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      Simulation of a flowing snow avalanche using molecular dynamics

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      Author
      Güçer, Denizhan
      Advisor
      Özgüç, Bülent
      Date
      2010
      Publisher
      Bilkent University
      Language
      English
      Type
      Thesis
      Item Usage Stats
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      Abstract
      This thesis presents an approach for modeling and simulation of a flowing snow avalanche, which is formed of dry and liquefied snow that slides down a slope, by using molecular dynamics and discrete element method. A particle system is utilized as a base method for the simulation and marching cubes with real-time shaders are employed for rendering. A uniform grid based neighbor search algorithm is used for collision detection for inter-particle and particle-terrain interactions. A mass-spring model of collision resolution is employed to mimic compressibility of snow and particle attraction forces are put into use between particles and terrain surface. In order to achieve greater performance, general purpose GPU language and multi-threaded program-ming is utilized for collision detection and resolution. The results are dis-played with different combinations of rendering methods for the realistic re-presentation of the flowing avalanche.
      Keywords
      Flowing avalanche simulation
      Discrete element method
      Particle system
      Marching cubes
      Parallel computing
      GPU
      CUDA
      shared memory
      Permalink
      http://hdl.handle.net/11693/15159
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      • Dept. of Computer Engineering - Master's degree 511
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