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Bernoulli Equation

   Also found in: Wikipedia 0.01 sec.
Bernoulli equation [ber‚nü·lē i′kwā·zhən]
(fluid mechanics)
(mathematics)
A nonlinear first-order differential equation of the form (dy/dx) +yf(x) =yng(x), wherenis a number different from unity andfandgare given functions. Also known as Bernoulli differential equation.

Bernoulli Equation 

a differential equation of the first order of the form

dy/dx + Py = Qyα

where P and Q are predetermined continuous functions of x and α is a constant. With the introduction of the new function z = y + 1, the Bernoulli equation is reduced to a linear differential equation with respect to z. The Bernoulli equation was considered by Jakob Bernoulli in 1695, and a method of solving it was published by Johann Bernoulli in 1697.



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Although the practical application of power-balance methods may be limited for lack of measured model parameters, this research has demonstrated that the conventional multizone method is simply a special case of the more general power-balance method with another special case being that based on the generalized Bernoulli equation that is used in the piping network analysis community.
Three important assumptions come into play in using this power law representation of flow through an orifice that is derived from the Bernoulli equation.
 
 
 
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