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-   -   Navier-Stokes equation or Navier-Stokes equations (http://www.cfd-online.com/Forums/main/70103-navier-stokes-equation-navier-stokes-equations.html)

Takaaki November 14, 2009 12:26

Navier-Stokes equation or Navier-Stokes equations
 
Which is correct, "Navier-Stokes equation" or "Navier-Stokes equations?"
There is a large number of people who use plural form for this equation.
With regard to "energy equation," most people use singular form.
Does anyone know the reason?
:confused:

sbaffini November 14, 2009 13:50

The "Navier-Stokes equations" are 3 equations, one for each momentum component. Some people also use this term to indicate the 3 momentum equations + the energy equation

Takaaki November 14, 2009 14:11

Dear sbaffini,
Thank you for your prompt reply.
I understand the reason.


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