Hydraulic Gradient

Written by Jerry Ratzlaff on . Posted in Dimensionless Numbers

hydraulic gradientHydraulic gradient, abbreviated as i, a dimensionless number, is the change in height (pressure) to length between any two points.

 

hydraulic gradient formula

\(\large{ i = \frac{ Q }{ k \; A_c }   }\)   

Where:

 Units English Metric
 \(\large{ i }\) = hydraulic gradient \(\large{dimensionless}\)   
\(\large{ A_c }\) = area cross-section \(\large{ft^2}\) \(\large{m^2}\)
\(\large{ Q }\) = flow rate \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\)
\(\large{ k }\) = hydraulic conductivity \(\large{\frac{ft}{day}}\) \(\large{\frac{m}{day}}\)

 

Related Hydraulic Gradient formula

\(\large{ i =  \frac{v}{k}   }\)  (Darcy velocity

Where:

\(\large{ i }\) = hydraulic gradient

\(\large{ v }\) = Darcy velocity or flux

 

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Tags: Pressure Equations Hydraulic Equations Soil Equations