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TEMA II.5 - Viscosidad - Universidad de Guanajuato

TEMA II.5 - Viscosidad - Universidad de Guanajuato

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Elasticidad<br />

Una forma alterna es<br />

Eν = − dp<br />

dρ/ρ<br />

Al comprar las dos ultimas ecuaciones, se pue<strong>de</strong> observar que dρ/ρ =<br />

−dV /V . Po<strong>de</strong>mos verificar esta igualdad al consi<strong>de</strong>rar una masa M dada<br />

<strong>de</strong> fluido, don<strong>de</strong><br />

M = ρV<br />

Si <strong>de</strong>rivamos ambos lados, tenemos<br />

dM = ρdV + Vdρ<br />

<strong>TEMA</strong> <strong>II.5</strong>: <strong>Viscosidad</strong> J.P. Torres-Papaqui Ondas y Fluidos 18 / 19

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