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Coral Growth via Nutrient Random Walk

Coral Growth via Nutrient Random Walk. By Steve Shen. Method. Assumptions. For nParticles while 1 nutrients diffuse w/o PBC if neighbor has coral, stop diffusion and add nutrients to cell. break from while loop Check coral cell that stopped the diffusion

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Coral Growth via Nutrient Random Walk

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  1. Coral Growth via Nutrient Random Walk By Steve Shen

  2. Method Assumptions For nParticles while 1 nutrients diffuse w/o PBC if neighbor has coral, stop diffusion and add nutrients to cell. break from while loop Check coral cell that stopped the diffusion if sum of nutrients around that cell > threshold, grow a coral new image end • Coastal marine organism dependent on nutrients and sunlight • Nutrients diffuse in system via random walk. • Coral polyp grows when it has received a certain amount of nutrients. • Polyps have a tendency to grow in the direction of the nutrients • Only polyps on the surface participate. • Coral can grow at all depths of the system. • 2D

  3. Run with FinalCoralGrowth.m

  4. Comparison with Standard DLA No PBCMore aggressive branching Self-directed ‘flow’ behavior ‘Fixed’; % Starting point of nutrient diffusion x = 3+floor((maxX-2)*rand); Demonstrates aggressive sensitivity to small changes % Starting point of nutrient diffusion x = 3+floor((maxX)*rand);

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