Код:
simulation /sɪmjuːˈleɪʃ(ə)n/
imitation of a situation or process.
"simulation of blood flowing through arteries and veins"
- the action of pretending; deception.
"clever simulation that's good enough to trick you"
- the production of a computer model of something, especially for the purpose of study.
"the method was tested by computer simulation"
В русском языке в обсуждаемой области термин "симуляция" используется ровно в этом же значении.