TRANSFERUL DE IMPULS - Cadre Didactice
TRANSFERUL DE IMPULS - Cadre Didactice
TRANSFERUL DE IMPULS - Cadre Didactice
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Fluide Newtoniene<br />
• Constanta de proportionalitate :<br />
tensiunea de forfecare<br />
μ =<br />
viteza de forfecare<br />
( τ yx )<br />
( & γ )<br />
yx<br />
• poartadenumireade “viscozitate newtoniana”<br />
• Prin definitie este independenta de viteza de<br />
forfecare γ& yx si de tensiunea de forfecare τ , yx<br />
depinzand numai de:<br />
– natura fluidului;<br />
– temperatura;<br />
–presiune.<br />
FENOMENE <strong>DE</strong> TRANSFER SI OPERATII UNITARE 17<br />
μ
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