HIDRÁULICA DOS CONDUTOS FORÇADOS
hidraulica
hidraulica
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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