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Equation
       
    Name Brunt-Väisälä Frequency
 
    Equation N = ( - g ρ &partial; ρ &partial; z ) 1 / 2
 
    Definition of terms N = Brunt-Väisälä frequency, g = acceleration due to gravity, ρ = density, z = vertical displacement
 
    Comments A small particle of fluid displaced vertically in a fluid that is otherwise at rest will oscillate about its original position with angular frequency N , called the Brunt-Väisälä frequency.
 
    References

Physical Fluid Dynamics , D J Tritton, Clarendon Press, 2nd edition, 1998

       


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