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Turbomachinery

The work
Rotor rows and the wakes they leave
What decides it
Blade-pass resolution in time
Cost of being wrong
A stage map that does not match the rig

What Courant catches here

  1. 01
    Timestep against blade pass

    Climbing with rotation speed, one step at a time.

    Courant 113 at rated speed
  2. 02
    Adaptive timestep, ignored

    A case told to adjust its timestep on a solver that never reads the setting.

    0 deltaT lines written
  3. 03
    Write cadence after a repair

    A correct timestep cut that would have multiplied the output by the same factor.

    4,531 directories, not 2

What comes back

  • The cause, and the line of solver output it came from
  • The change, as a diff you can reverse
  • Four physics checks, measured against their limits
  • A record somebody else can open on a link

What this work is held to

  • ASME V&V 20Verification and validation in CFD and heat transfer
  • API 610 / 617Pumps and compressors for process service
  • IEC 61508Functional safety of electrical and electronic systems

Courant holds none of these certifications. It produces the verification record they ask you to keep.

Solvers certified for this work

  • pimpleFoam
  • simpleFoam
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Other industries

AerospaceConjugate heat transferEnergyFree surface and multiphaseAutomotiveExternal aerodynamicsDefenceHigh speed, no network