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LUCIAN GAVRILĂ – Fenomene de transfer II - Cadre Didactice

LUCIAN GAVRILĂ – Fenomene de transfer II - Cadre Didactice

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3/9/2003<br />

CONDENSAREA VAPORILOR<br />

oAsupra volumului<br />

elementar acţionează<br />

următoarele forţe:<br />

<strong>–</strong>greutatea ρgdV orientată în<br />

jos;<br />

<strong>–</strong>forţa <strong>de</strong> frecare f<br />

orientată în sus;<br />

<strong>–</strong>forţa <strong>de</strong> frecare (f + df)<br />

orientată în jos.<br />

<strong>LUCIAN</strong> <strong>GAVRILĂ</strong> <strong>–</strong> <strong>Fenomene</strong> <strong>de</strong> <strong>transfer</strong> <strong>II</strong> 22<br />

x<br />

dx<br />

0<br />

y dy<br />

f<br />

ρgdV<br />

(f + df)<br />

y

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