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Infiltration: Sizing and modeling (view source)
Revision as of 15:54, 7 September 2017
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This spreadsheet tool has been set up to perform all of the calculations shown below<br>
<strong>[[Media:Infiltration Sizing.xlsx|Download .xlsx calculation tool]]</strong>
===One dimensional infiltration===
The following equations assume that infiltration occurs primarily through the base of the facility.
The following equations assume that infiltration occurs primarily through the base of the facility.
They may be easily applied for any shape and size of infiltration facility, in which the reservoir storage is mostly in an aggregate.
They may be easily applied for any shape and size of infiltration facility, in which the reservoir storage is mostly in an aggregate.
To calculate the require facility area or footprint where the depth is constrained:
To calculate the require facility area or footprint where the depth is constrained:
<math>P=\frac{IiD}{nd+qD}</math>
<math>P=\frac{IiD}{nd+qD}</math>
To calculate the time (''t'') to fully drain the facility:
To calculate the time (''t'') to fully drain the facility:
<math>t=\frac{nd}{q}</math>
<math>t=\frac{nd}{q}</math>
==Accounting for lateral infiltration==
==Three dimensional infiltration==
[[file:Hydraulic radius.png|thumb|Three footprint areas of 9 m<sup>2</sup>.<br>
[[file:Hydraulic radius.png|thumb|Three footprint areas of 9 m<sup>2</sup>.<br>
From left to right x = 12 m, x = 14 m, and x = 16 m]]
From left to right x = 12 m, x = 14 m, and x = 16 m]]