Simulation Definition and 897 Threads

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. S

    A All-atom simulation and coarse-grained simulations

    I am currently reading this [paper by Noid et. al.](https://doi.org/10.1063/1.2938860) on the rigorous bridge between atomistic and coarse-grained simulations. In the paper, he defined a linear map from the atomistic coordinates and momenta $$\mathbf{r}^n, \mathbf{p}^n$$ to the coarse-grained...
  2. SalahAhmed03

    Sٍٍhort circuit simulation using ANSYS Maxwell

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  3. L

    I 1D wavepacket scattering simulation, momentum distribution formula

    Hello everybody at the forum I'm from Ukraine, I have Chemistry degree, and last year I began to self studying Quantum Mechanics. I'm reading this article: R. Garcia, A. Zozulya, and J. Stickney, “MATLAB codes for teaching quantum physics: Part 1,” [Online]. Available...
  4. JamieSalaor

    I The Simulation Theory and the dangers of pop-science

    . I should preface by saying I'm a geologist not a physicist... Gotta say I usually avoid people who talk about the simulation stuff but I just saw a Tedx by George Smoot and it wound me up... Anyway, the simulation hypothesis seems to me, and most other scientists to basically be a bit of a...
  5. G

    FEA Torque Sim: Custom Wrench Design & SolidWorks File

    I'm making a custom wrench for personal use. For fun, I'd like to run an FEA and see if the wrench will fail. Below is a similar wrench. 100ft-lbs are applied with a torque wrench to the square socket. Where do I fix and apply the load? Should it be a torque or a force? I'm doing the FEA in...
  6. person123

    MATLAB More Efficient Way of Computing Neighbors in Range

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  7. U

    Looking for physics based simulation for data generation

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  8. R

    Unreasonable values for engine torque in vehicle simulation

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  9. dasil12a

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  10. R

    Do we live in a simulation, Scientific American article posted today

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  11. H

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  12. S

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  13. J

    Best Environment/Programming Language for simple physics Simulations

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  14. A

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  15. Arman777

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  16. ShadownightPrograms

    I Many-Worlds Theory: Simulation Program in C#

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  17. J

    B Accelerate Light-Clock Simulation: Proper Time & Coordinate Time

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  18. Ericdjs

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  19. greg_rack

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  20. E

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  21. Adec

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  22. T

    How can I solve my ADS EM simulation problem?

  23. K

    Engineering a Desk-Mounted Flight Stick for Flight Simulation

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  24. T

    Virtual Physics Labs - giving some resources and asking for some

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  25. Boltzman Oscillation

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  26. M

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  27. F

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  28. B

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  29. brainbaby

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  30. E

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  31. F

    A New MOND Simulation: First Galaxy Formation Model in Milgromian Gravity

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  32. fRod57

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  33. L

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  34. S

    3d simulation of a rolling ball

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  35. J

    I What percentage of physicists believe in a simulation hypothesis?

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  36. J

    I Simulation Hypothesis: Quantum Computer Modeling

    In the simulation hypothesis, should the simulation be modeled only on a quantum computer?
  37. D

    Gravity simulation with arbitrary geometries

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  38. E

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

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  39. E

    I Can a simulation hypothesis simulate quantum physics?

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  40. Spinnor

    B Simulation of a Galaxy, most detailed large-scale simulation to date

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  41. D

    Rigid body simulation of complex mechanical systems

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  42. B

    Engineering Simplorer Maxwell simulation error that I'm getting

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  43. Z

    Polyurethane Properties for Abaqus simulation

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  44. Arman777

    I How to Assign Initial Conditions for Binary Star Systems in a Simulation?

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  45. Arman777

    Creating a Gravitational 2 body simulation

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  46. K

    Ansys Explosion Simulation: Methane Gas Parameters

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  47. J

    I Simulation Hypothesis: How Will Touch Occur?

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  48. M

    Problem with CD4040B counter simulation in PSpice

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  49. A

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  50. B

    Python Problem in a simulation with Python

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