Changes

:<math>d=a[e^{\left ( -bD \right )} -1]</math>

:<math>d=a[e^{\left ( -bD \right )} -1]</math>

Where

Where

<math>a=\frac{Ap}{x}-\frac{i Ai}{x f'}</math>

<math>a=\frac{Ar}{x}-\frac{i Ai}{x f'}</math>

and  

and  

<math>b=\frac{xf'}{nAp}</math>

<math>b=\frac{xf'}{nAr}</math>

(The rearrangement to calculate the required footprint area of the facility for a given depth using three dimensional drainage is not available at this time. Elegant submissions are invited.)<br>

(The rearrangement to calculate the required footprint area of the facility for a given depth using three dimensional drainage is not available at this time. Elegant submissions are invited.)<br>

<br>

<br>

To calculate the time (''t'') to fully drain the facility assuming three-dimensional drainage:  

To calculate the time (''t'') to fully drain the facility assuming three-dimensional drainage:  

<math>t=\frac{nAp}{f'x}ln\left [ \frac{\left (d+ \frac{Ap}{x} \right )}{\left(\frac{Ap}{x}\right)}\right]</math>

<math>t=\frac{nAr}{f'x}ln\left [ \frac{\left (d+ \frac{Ar}{x} \right )}{\left(\frac{Ar}{x}\right)}\right]</math>

Where "ln" means natural logarithm of the term in square brackets

Where "ln" means natural logarithm of the term in square brackets

[[category: modeling]]

[[category: modeling]]

[[category: infiltration]]

[[category: infiltration]]