Dear Maria Papadopoulou :

Really, both are expressions for

C= Chezy Coefficient

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Manning equation (1889; in 1891 paper)

( more known and used in United States and England)

C= (1.486 *(R **1/6)) / n

n= Manning Coefficient


V = (1.486/n)( R**(2/3)) ((s**(1/2)) ( english units)

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In Europe Continent : (Glaucker-Strickler)


C= Chezy= (R **(1/6)) / n


1868 P. G. Glaucker

and

1923 Strickler n = ((d50) **(1/6)) / 29.24

and 24.1= (( d50)**(1/6)) /n

d= mean grain size of bed material

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Best information in :

Hunter Rouse, Hydraulics.Elementary Mechanics of Fluids (1945)

and Ven te Chow, Open Channel Hydraulics (1959) .

Ing. Marcelo Jorge Pérez, Dominican Republic.



Maria Papadopoulou wrote:

>Does anyone have any reference regarding the manning
>strickler law or equation?
>Could anyone give a brief description of it?
>
>Thank in advance for your help
>
>Maria
>*******************************************
>Maria P. Papadopoulou, Ph.D.
>Post-Doctoral Associate
>Dept. of Environmental Engineering
>Technical University of Crete (TUC)
>Polytechnoupolis 73100
>Chania, Greece
>Phone: +30-28210-37793
>Fax: +30-28210-37846
>Email: mapapad@...
>*******************************************