Calculateur gratuis en ligne de la perte de pression de tête en un tube Manning

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La perte de pression de tête en un tube pleine, donné la circulation

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Inputs

Circulation, q		X
Diamètre de tube, d₀		X
Longeur de la tube		X
Rugosité Manning, n ?		X
Coeficient total de perte dans les joints, k		X
Downstream EGL		X

Resultats:

Area, A	Area, A		X
Périmètre mouiller	Périmètre mouiller		X
Rayon hydraulique	Rayon hydraulique		X
Vitesse, v	Vitesse, v		X
Pression de tête de la vitesse, h_v	Pression de tête de la vitesse, h_v		X
Friction slope	Friction slope		X
Average tractive force, tau	Average tractive force, tau		X
Perte de frottement	Perte de frottement		X
Perte de embranchement	Perte de embranchement		X
Perte totale	Perte totale		X
Upstream EGL	Upstream EGL		X
Upstream HGL in pipe (See notes)	Upstream HGL in pipe (See notes)		X

Notes:

For an open inlet (culvert) condition, it is necessary to check for inlet control conditions.: 1. The upstream HGL cannot be lower than the upstream normal depth flow elevation (or lower than the pipe!).; 2. The headwater of a culvert is better represented by the upstream EGL than the upstream HGL.; 3. See my 2-minute tutorial for simple standard culvert headwater calculations using HY-8.