Difference between revisions of "Manning's Formula"

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Manning’s formula is the most widely used formulas for open-channel flow.
 
Manning’s formula is the most widely used formulas for open-channel flow.
 
In 1889 the Irish engineer Robert Manning presented a formula, which was later modified to its present well known form;
 
In 1889 the Irish engineer Robert Manning presented a formula, which was later modified to its present well known form;
−
<math>\V=frac{1.49_n}R^2/3S^1/2<math>
 
  
−
<math>\frac{P_1}{\rho g}+\frac{V_1^2}{2g}+Z_1=\frac{P_2}{\rho g}+\frac{V_2^2}{2g}+Z_2</math>
+
<math>V=\frac{1.49}{n}R^\frac{2}{3}S^\frac{1}{2}</math>

Revision as of 13:22, 18 July 2017

Manning’s formula is the most widely used formulas for open-channel flow. In 1889 the Irish engineer Robert Manning presented a formula, which was later modified to its present well known form;

V=\frac{1.49}{n}R^\frac{2}{3}S^\frac{1}{2}

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