Fluides Flashcards

1
Q

Densité particulaire d’un gaz

A

n = 1•e25 m^-3

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2
Q

Densité particulaire d’un liquide

A

n = 1•e28 m^-3

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3
Q

Libre parcours moyen dans un gaz

A

l = 100 nm

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4
Q

Libre parcours moyen ans un liquide

A

l = 1-10 nm

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5
Q

Viscosité cinématique de l’eau

A

ν = 10^-6 m^2/s

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6
Q

Viscosité cinématique de l’air

A

ν = 10^-5 m^2/s

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7
Q

Viscosité dynamique de l’eau

A

η = 1,0•e-3 Pa•s

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8
Q

Viscosité dynamique d’un fluide très visqueux (huile)

A

η = 0,1 Pa•s

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9
Q

Nombre de Reynolds pour un écoulement rampant

A

Re

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10
Q

Nombre de Reynolds pour un écoulement laminaire

A

Re

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11
Q

Nombre de Reynolds pour un écoulement turbulent

A

Re > 2 000

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12
Q

Compressibilité isentropique d’un gaz

A

χs = 10^-5 Pa^-1

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13
Q

Compressibilité isentropique d’un liquide

A

χs = 10^-10 Pa^-1

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