Mannings 公式 gravity 流量

Reference data と engineering information about mannings 公式 gravity 流量 for fluid mechanics applications.

manningsformulagravityflow計算機

Overview

Manning's formula is the standard equation for open channel flow calculations. It relates flow rate to channel geometry, slope, and surface roughness.

Variables

Symbol	Description	Unit
$Q$	Flow rate	m³/s
$n$	Manning roughness coefficient	—
$A$	Cross-sectional flow area	m²
$R_h$	Hydraulic radius	m
$S$	Channel slope	m/m
$P$	Wetted perimeter	m

Formula

$Q = \frac{1}{n} A R_h^{2/3} S^{1/2}$

Calculator

Mannings Formula Gravity Flow Calculator

Channel Width(m)

Flow Depth(m)

Channel Slope(m/m)

Manning's n

Notes

Results are approximate and should be verified for critical applications
Input values should be within reasonable engineering ranges

References

Original Source

出典: engineeringtoolbox.com