免費線上曼寧管流計算器

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在特定斜率和深度均勻管流的曼寧公式

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Inputs

管徑,d₀		X
曼寧粗造度係數, n?		X
壓力斜率（是否可能等於管道坡度 ?), S₀		X
全深百分比（或比例）（如果全深流動 100％或 1）		X

結果:

Flow depth, y	Flow depth, y		X
流動面積	流動面積		X
Pipe area, a0	Pipe area, a0		X
Relative area, a/a0	Relative area, a/a0		X
濕周	濕周		X
水力半徑	水力半徑		X
頂部寬度, T	頂部寬度, T		X
流速, v	流速, v		X
速度壓頭, hv	速度壓頭, hv		X
Froude 數, F	Froude 數, F		X
Average 剪應力(牽引力), tau	Average 剪應力(牽引力), tau		X
流量,q (See notes)	流量,q (See notes)		X
Full flow, Q0	Full flow, Q0		X
Ratio to full flow, Q/Q0	Ratio to full flow, Q/Q0		X

Notes:

This is the flow and depth inside an infinitely long pipe.: Getting the flow into the pipe may require significantly higher headwater depth. Add at least 1.5 times the velocity head to get the headwater depth or see my 2-minute tutorial for standard culvert headwater calculations using HY-8.