a) find shear stress at point r=d/4 b)find expression of the shear force acting on pice of pipe og length L

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a) find shear stress at point r=d/4 b)find expression of the shear force acting on pice of pipe og length L

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a) find shear stress at point r=d/4
b)find expression of the shear force acting on pice of pipe og length L
A Find Shear Stress At Point R D 4 B Find Expression Of The Shear Force Acting On Pice Of Pipe Og Length L 1
A Find Shear Stress At Point R D 4 B Find Expression Of The Shear Force Acting On Pice Of Pipe Og Length L 1 (30.66 KiB) Viewed 6 times
Bokmål Oppgave 1 Vann strømmer gjennom et sirkulært rør med diameter d. Hastighetsprofilen til vannet er gitt som: -²), der r er radius i røret, u er viskositeten, og a er en konstant. u(r)= = 4μ a) Vis at denne hastighetsprofilen tilfredsstiller grensebetingelsene til en fullt utviklet, laminær strømning. b) Hvilke enheter må konstanten a ha for at u(r) skal utrykke hastighet i m/s ? c) Finn et utrykk for skjærspenningen i punktet der r=d/4 d) Finn et utrykk for skjærkraften som virker på et stykke rør med lengde L. e), Kva er forskjell mellom en turbulent og en laminær strømning? Oppgave 2
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