How accurate is computational fluid dynamics (CFD) software compared to wind tunnel tests?

(I mean CFD computed with super-computers like the aircraft industry has.)

  • $\begingroup$ Will this answer your question? Please point out where doubts remain. $\endgroup$ Jul 24, 2020 at 22:55
  • $\begingroup$ yes ,these answers help.. $\endgroup$
    – CFD 404
    Jul 25, 2020 at 5:42
  • $\begingroup$ @PeterKämpf,but in general wind tunnel test gives more accurate results compare to CFD? $\endgroup$
    – CFD 404
    Jul 25, 2020 at 5:45
  • $\begingroup$ Not necessarily. As I say in that other answer, aeroelasticity is impossible to match in the tunnel (or you need a new model for every data point). Also, the correction factors have only been calculated from earlier models and you only hope they match your test, too. The only accurate data can be achieved in flight test. $\endgroup$ Jul 25, 2020 at 6:57
  • $\begingroup$ @Peterkampf,if you put aeroelastical wing in tunnel ,devices for lift and drag will show correct results for that tested wing.isnt it? $\endgroup$
    – CFD 404
    Jul 25, 2020 at 9:18


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