Gauckler-Manning Formula Calculator
Posted by Dinesh onThe Manning formula is also known as the Gauckler–Manning formula, or Gauckler–Manning–Strickler formula in Europe. In the United States, in practice, it is very frequently called simply Manning's equation. The Manning formula is an empirical formula estimating the average velocity of a liquid flowing in a conduit that does not completely enclose the liquid, i.e., open channel flow. However, this equation is also used for calculation of flow variables in case of flow in partially full conduits, as they also possess a free surface like that of open channel flow. All flow in so-called open channels is driven by gravity.
Calculation of Gauckler Manning Equation
Formula:
where,
V is the cross-sectional average velocity
n is the Gauckler-Manning coefficient
Rh is the hydraulic radius
S is the slope of the hydraulic grade line or the linear hydraulic head loss (L/L)
k is a conversion factor between SI and English units. k=1 for SI units, and k=1.49 for English units
V is the cross-sectional average velocity
n is the Gauckler-Manning coefficient
Rh is the hydraulic radius
S is the slope of the hydraulic grade line or the linear hydraulic head loss (L/L)
k is a conversion factor between SI and English units. k=1 for SI units, and k=1.49 for English units