|
|
| (2 intermediate revisions by the same user not shown) |
| Line 1: |
Line 1: |
| The Universal Rational Hydrograph uses a set of coefficients and the peak discharge to compute the hydrograph ordinates at different times. The coefficients are shown in the following table and the resulting hydrograph is displayed.
| | #redirect [[WMS:Rational_Method_Computing_Hydrographs#Universal_Rational_Hydrograph]] |
| | |
| {| Border=1 CellSpacing=0 CellPadding=2
| |
| |-
| |
| | ColSpan=2 |
| |
| {| Border=1 CellSpacing=0 CellPadding=2 style="background:#aaccff;"
| |
| |-
| |
| !Dimensionless Time and Hydrograph Ordinates
| |
| |}
| |
| |- style="background:#dfdfdf;"
| |
| !''t''/''t<sub>c</sub>'' !!''Q''/''Q<sub>p</sub>''
| |
| |- Align=Center
| |
| |0 ||0.00
| |
| |- Align=Center
| |
| |1 ||0.21
| |
| |- Align=Center
| |
| |2 ||0.30
| |
| |- Align=Center
| |
| |3 ||1.00
| |
| |- Align=Center
| |
| |4 ||0.54
| |
| |- Align=Center
| |
| |5 ||0.39
| |
| |- Align=Center
| |
| |6 ||0.25
| |
| |- Align=Center
| |
| |7 ||0.18
| |
| |- Align=Center
| |
| |8 ||0.15
| |
| |- Align=Center
| |
| |9 ||0.14
| |
| |- Align=Center
| |
| |10 ||0.13
| |
| |- Align=Center
| |
| |11 ||0.00
| |
| |}
| |
|
| |
| Notice that the peak occurs at ''3*t<sub>c</sub>'', and the time base is equal to ''11*t<sub>c</sub>''.
| |
| | |
| [[Image:UniversalRationalHydrograph.png]]
| |
| | |
| where:
| |
| | |
| * ''t<sub>c</sub>'' = Time of concentration.
| |
| * ''Q'' = Flow at time <math>t</math>, in cfs.
| |
| * ''Q<sub>p</sub>'' = Peak flow.
| |
| | |
| | |
| ==Related Topics==
| |
| * [[WMS:Rational Method Computing Hydrographs|Computing Hydrographs with Rational Method]]
| |
| * [[WMS:Rational Method Equation|Rational Method Equation]]
| |
| | |
| | |
| {{WMSMain}}
| |
| [[Category:Rational Method|U]]
| |
| [[Category:Equations|U]]
| |
| [[Category:WMS Plot]]
| |
| | |
| {{stub}}
| |
