What is Simulation: Definition and 879 Discussions

A simulation is the imitation of the operation of a real-world process or system over time. Simulations require the use of models; the model represents the key characteristics or behaviors of the selected system or process, whereas the simulation represents the evolution of the model over time. Often, computers are used to execute the simulation.
Simulation is used in many contexts, such as simulation of technology for performance tuning or optimizing, safety engineering, testing, training, education, and video games. Simulation is also used with scientific modelling of natural systems or human systems to gain insight into their functioning, as in economics. Simulation can be used to show the eventual real effects of alternative conditions and courses of action. Simulation is also used when the real system cannot be engaged, because it may not be accessible, or it may be dangerous or unacceptable to engage, or it is being designed but not yet built, or it may simply not exist.Key issues in modeling and simulation include the acquisition of valid sources of information about the relevant selection of key characteristics and behaviors used to build the model, the use of simplifying approximations and assumptions within the model, and fidelity and validity of the simulation outcomes. Procedures and protocols for model verification and validation are an ongoing field of academic study, refinement, research and development in simulations technology or practice, particularly in the work of computer simulation.

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  1. greg_rack

    Maxwell-Boltzmann distribution for the simulation of a perfect gas

    I'm currently programming lots of physics simulators in DHTML, and my next step would be simulating a perfect gas behavior at a molecular point of view, bouncing inside of an HTML canvas. For this reason, I came across "Maxwell-Boltzmann's law of distribution"(for speed, which I only studied...
  2. E

    Orbital dynamics math review for a computer simulation

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  3. Adec

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    To simulate the trayectories of solar systems around a black hole (i.e. a galaxy) I have 3 classes in C++: cSystem, cBlackHole and cGalaxy. cSystem assigns initial values of position, velocity, etc to a solar system. cBlackHole does the same but just for the black hole. And cGalaxy mixes...
  4. T

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  5. K

    Engineering a Desk-Mounted Flight Stick for Flight Simulation

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  6. T

    Virtual Physics Labs - giving some resources and asking for some

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  7. Boltzman Oscillation

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  8. M

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  9. F

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  10. B

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  11. brainbaby

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  12. E

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  13. fresh_42

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  14. fRod57

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  15. L

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  16. S

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  17. J

    I What percentage of physicists believe in a simulation hypothesis?

    how many approximately scientists believe or support this hypothesis?
  18. J

    I Simulation Hypothesis: Quantum Computer Modeling

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  19. D

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  20. E

    I Cosmic Rays could reveal if we're actually living in a simulation?

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  21. E

    I Can a simulation hypothesis simulate quantum physics?

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  22. Spinnor

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  23. D

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  24. B

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  25. Z

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  26. Arman777

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  27. Arman777

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  28. K

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  29. J

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  30. M

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  31. A

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  32. B

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  33. F

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  34. A

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  35. Niko Skrypnik

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  36. F

    Where Can I Learn More About Physics Graphics Simulations?

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  37. U

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  38. A

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  39. P

    I According to quantum physics, can our universe be a simulation?

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  40. P

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  41. S

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  42. S

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  43. amare

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  44. M

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  45. S

    B Gravitational Wave Interference Graphical Computer Simulation

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  46. R

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  47. Wrichik Basu

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  48. S

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  49. Dimitris Catzis

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  50. Panagiotis Soutzis

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