Strömungsmechanische Kennzahlen Flashcards

1
Q

Reynoldszahl:

A

Re = (v * L * g) / η
Trägheit / Zähigkeit
η = dynamische Viskosität

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2
Q

Froudezahl

A

Fr = v / √g *√L

Trägheit / Gewicht

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3
Q

Eulerzahl

A

Eu = ∆p / v^2 *g

Druck / Trägheit

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4
Q

Newtonzahl

A

Ne = P / ρ * n³ * L^5

Fließwiderstand / Trägheit

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5
Q

Weberzahl

A

We = g * v^2 * L / σ

Trägheit / Oberfläche

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6
Q

Machzahl

A

Ma = v / vs

Geschwindigkeit / Schall

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7
Q

Archimedeszahl

A

Ar = (ρP - ρF) * g * d^3 * ρF / (ηF)^2

Auftriebskraft / Reibungskraft

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