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VER<br />

Pour toute grandeur microscopique notée •, la<br />

moyenne volumique est définie par :<br />

1<br />

• =<br />

V<br />

∫<br />

V<br />

• dV<br />

1<br />

∇• =∇ • +<br />

V<br />

Aαi<br />

• n dA<br />

αi<br />

∂ ∂ 1<br />

• = • − • WnαidA<br />

∂t ∂t V<br />

∫<br />

∫<br />

Aαi<br />

46

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