How to Calculate and Solve for Inflow Time (Net Application Depth) | Irrigation Water Requirement
Last Updated on April 21, 2024
The image above represents inflow time (net application depth). To calculate inflow time, four essential parameters are needed and these parameters are Net Application Depth (Fn), Length of Basin Stream (L), Application of Basin Stream Efficiency (E) and Unit Inflow Rate (Qn).
The formula to calculate inflow time (net application depth):
Ta = FnL / 60QnE
Where:
Ta = Inflow Time
Fn = Net Application Depth
L = Length of Basin Stream
Qn = Application of Basin Stream Efficiency
E = Unit Inflow Rate
Let’s solve an example;
Find the inflow time when the net application depth is 22, the length of basin stream is 11, the application of basin stream efficiency is 21 and the unit inflow rate is 10.
This implies that;
Fn = Net Application Depth = 22
L = Length of Basin Stream = 11
Qn = Application of Basin Stream Efficiency = 21
E = Unit Inflow Rate = 10
Ta = FnL / 60QnE
Ta = (22)(11) / 60(21)(10)
So, Ta = 242 / 12600
Ta = 0.019
Therefore, the inflow time is 0.019.
Read more: How to Calculate and Solve for Inflow Time | Irrigation Water Requirement
Calculating the Net Application Depth when the Inflow Time, the Length of Basin Stream, the Application of Basin Stream Efficiency and the Unit Inflow Rate are Given
Fn = Ta x 60QnE / L
Where;
Fn = Net Application Depth
Ta = Inflow Time
L = Length of Basin Stream
Qn = Application of Basin Stream Efficiency
E = Unit Inflow Rate
Let’s solve an example;
Find the net application depth when the inflow time is 10, the length of basin stream is 24, the application of basin stream efficiency is 8, the unit inflow rate is 14.
This implies that;
Ta = Inflow Time = 10
L = Length of Basin Stream = 24
Qn = Application of Basin Stream Efficiency = 8
E = Unit Inflow Rate = 14
Fn = Ta x 60QnE / L
Fn = 10 x 60(8)(14) / 24
That is, Fn = 67200 / 24
Fn = 2800
Therefore, the net application depth is 2800.
Read more: How to Calculate and Solve for Inflow Rate | Irrigation Water Requirement
Calculating the Length of Basin Stream when the Inflow Time, the Net Application Depth, the Application of Basin Stream Efficiency and the Unit Inflow Rate are Given
L = Ta x 60QnE / Fn
Where;
L = Length of Basin Stream
Ta = Inflow Time
Fn = Net Application Depth
Qn = Application of Basin Stream Efficiency
E = Unit Inflow Rate
Let’s solve an example;
Find the length of basin stream when the inflow time is 18, the net application depth is 32, the application of basin stream efficiency is 4, the unit inflow rate is 2.
This implies that;
Ta = Inflow Time = 18
Fn = Net Application Depth = 32
Qn = Application of Basin Stream Efficiency = 4
E = Unit Inflow Rate = 2
L = Ta x 60QnE / Fn
Thay is, L = 18 x 60(4)(2) / 32
L = 8640 / 32
L = 270
Therefore, the length of basin stream is 270.
Read more: How to Calculate and Solve for Basin Length | Irrigation Water Requirement
Calculating the Application of Basin Stream Efficiency when the Inflow Time, the Net Application Depth, the Length of Basin Stream and the Unit Inflow Rate are Given
Qn = (FnL / Ta) / 60E
Where;
Qn = Application of Basin Stream Efficiency
Ta = Inflow Time
Fn = Net Application Depth
L = Length of Basin Stream
E = Unit Inflow Rate
Let’s solve an example;
Find the application of basin stream efficiency when the inflow time is 8, the net application depth is 3. the length of basin stream is 2 and the unit inflow rate is 4.
This implies that;
Ta = Inflow Time = 8
Fn = Net Application Depth = 3
L = Length of Basin Stream = 2
E = Unit Inflow Rate = 4
Qn = (FnL / Ta) / 60E
Qn = ((3)(2) / 8) / 60 x 4
Then, Qn = (6 / 8) / 240
Qn = 0.75 / 240
Qn = 0.003125
Therefore, the application of basin stream efficiency is 0.003125.
Calculating the Unit Inflow Rate when the Inflow Time, the Net Application Depth, the Length of Basin Stream and the Application of Basin Stream Efficiency are Given
E = (FnL / Ta) / 60Qn
Where;
E = Unit Inflow Rate
Ta = Inflow Time
Fn = Net Application Depth
L = Length of Basin Stream
Qn = Application of Basin Stream Efficiency
Let’s solve an example;
Find the unit inflow rate when the inflow time is 20, the net application depth is 10, the length of basin stream is 8, and the application of basin stream efficiency is 6.
This implies that;
Ta = Inflow Time = 20
Fn = Net Application Depth = 10
L = Length of Basin Stream = 8
Qn = Application of Basin Stream Efficiency = 6
E = (FnL / Ta) / 60Qn
E = ((10)(8) / 20) / 60(6)
So, E = (80 / 20) / 360
E = (40) / 360
E = 0.11
Therefore, the unit inflow rate is 0.11.
How to Calculate Inflow Time (Net Application Depth) Using Nickzom Calculator
Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the inflow time.
To get the answer and workings of the inflow time, use the Nickzom Calculator – The Calculator Encyclopedia. First, you need to obtain the app.
You can get this app via any of these means:
Web – https://www.nickzom.org/calculator-plus
To get access to the professional version via web, you need to register and subscribe for NGN 2,000 per annum to have utter access to all functionalities.
You can also try the demo version via https://www.nickzom.org/calculator
Android (Paid) – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator
Android (Free) – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator
Apple (Paid) – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8
Once you have obtained the calculator encyclopedia app, proceed to the Calculator Map, then click on Agricultural under Engineering.
Now, Click on Irrigation Water Requirement under Agricultural
Now, Click on Inflow Time under Irrigation Water Requirement
The screenshot below displays the page or activity to enter your values, to get the answer for the inflow rate according to the respective parameters which is the Net Application Depth (Fn), Length of Basin Stream (L), Application of Basin Stream Efficiency (E) and Unit Inflow Rate (Qn).
Now, enter the values appropriately and accordingly for the parameters as required by the Net Application Depth (Fn) is 22, Length of Basin Stream (L) is 11, Application of Basin Stream Efficiency (E) is 21 and Unit Inflow Rate (Qn) is 10.
Finally, Click on Calculate
As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the inflow time and presents the formula, workings and steps too.