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Simulation: The Third Pillar of Science

  • Traditional scientific and engineering paradigm:

    • 1)

      Do theory or paper design.

    • 2)

      Perform experiments or build system.

  • Limitations:

    • Too difficult -- build large wind tunnels.

    • Too expensive -- build a throw-away passenger jet.

    • Too slow -- wait for climate or galactic evolution.

    • Too dangerous -- weapons, drug design, climate experimentation.

  • Computational science paradigm:

  • 3)

    Use high performance computer systems to simulate the phenomenon

    • Base on known physical laws and efficient numerical methods.

COMP 422, Spring 2008 (V.Sarkar)

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