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HIDRÁULICA DOS CONDUTOS FORÇADOS

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PERDA DE CARGA (Contínua)<br />

Análise Dimensional Aplicada ao Escoamento Forçado<br />

Teorema de Vaschy-Buckingham (ou teorema dos π):<br />

Π<br />

2<br />

= ρ<br />

⎛<br />

⎜<br />

⎝<br />

M<br />

L<br />

a<br />

3<br />

⋅V<br />

⎞<br />

⎟<br />

⎠<br />

a<br />

b<br />

⎛<br />

⋅ ⎜<br />

⎝<br />

⋅ D<br />

L<br />

t<br />

c<br />

⎞<br />

⎟<br />

⎠<br />

⋅µ<br />

b<br />

⋅<br />

⎛ M<br />

⎜<br />

⎝ L ⋅t<br />

c ⎞<br />

( L) ⋅ ⎟<br />

⎠<br />

M:<br />

L:<br />

t:<br />

a + 1 = 0 → a = −1<br />

−3⋅<br />

a + b + c −1<br />

= 0 → 3 −1+<br />

c −1<br />

= 0 → c = −1<br />

−b<br />

−1 = 0 → b = −1<br />

−1<br />

−1<br />

−1<br />

Π 2 = ρ ⋅V<br />

⋅ D<br />

⋅µ<br />

Π<br />

µ<br />

=<br />

ρ⋅V<br />

⋅ D<br />

2 =<br />

1<br />

Re<br />

Reynolds

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