# Introduction to turbulence/Study questions

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3. Some believe that computers have already (or at least soon will) make experiments in turbulence unnecessary. The simplest flow one can imagine of sufficiently high Reynolds number to really test any of the theoretical ideas about turbulence will require a computational box of approximately $(10^5)^3$, because of the large range of scales needed. The largest simulation to-date uses a computational box of $(10^3)^3$, and takes several thousand hours of processor time. Assuming computer capacity continues to double every 1.5 years, calculate how many years it will be before even this simple experiment can be done in a computer.