Chow's Function given Drawdown Solution

STEP 0: Pre-Calculation Summary
Formula Used
Chow's Function = Total Drawdown in Well/Change in Drawdown
Fu = st/Δd
This formula uses 3 Variables
Variables Used
Chow's Function - Chow's Function is a constant given by chow.
Total Drawdown in Well - (Measured in Meter) - The Total Drawdown in Well is defined as the reduction in hydraulic head observed at a well in an aquifer, typically due to pumping a well as part of an aquifer test or well test.
Change in Drawdown - (Measured in Meter) - Change in Drawdown at the two wells.
STEP 1: Convert Input(s) to Base Unit
Total Drawdown in Well: 0.83 Meter --> 0.83 Meter No Conversion Required
Change in Drawdown: 0.22 Meter --> 0.22 Meter No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Fu = st/Δd --> 0.83/0.22
Evaluating ... ...
Fu = 3.77272727272727
STEP 3: Convert Result to Output's Unit
3.77272727272727 --> No Conversion Required
FINAL ANSWER
3.77272727272727 3.772727 <-- Chow's Function
(Calculation completed in 00.004 seconds)

Credits

Created by Suraj Kumar
Birsa Institute of Technology (BIT), Sindri
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Meerut Institute of Engineering and Technology (MIET), Meerut
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6 Drawdown and Change in Drawdown Calculators

Change in Drawdown given Time at 1st and 2nd Instance
Go Difference in Drawdowns = (2.303*Discharge*log((Time of Drawdown/Time of Drawdown (t1)),10))/(4*pi*Time in Hours for Well Discharge)
Drawdown given Well Function
Go Total Drawdown in Well = (Discharge*Well Function of u)/(4*pi*Formation Constant for Unsteady Flow)
Change in Drawdown given Formation Constant T
Go Change in Drawdown = (2.303*Discharge)/(4*pi*Formation Constant for Unsteady Flow)
Change in Drawdown given Chow's Function
Go Change in Drawdown = Total Drawdown in Well/Chow's Function
Chow's Function given Drawdown
Go Chow's Function = Total Drawdown in Well/Change in Drawdown
Drawdown given Chow's Function
Go Total Drawdown in Well = Chow's Function*Change in Drawdown

Chow's Function given Drawdown Formula

Chow's Function = Total Drawdown in Well/Change in Drawdown
Fu = st/Δd

What is Drawdown?

A drawdown is a peak-to-trough decline during a specific period for an investment, trading account, or fund. A drawdown is usually quoted as the percentage between the peak and the subsequent trough.

How to Calculate Chow's Function given Drawdown?

Chow's Function given Drawdown calculator uses Chow's Function = Total Drawdown in Well/Change in Drawdown to calculate the Chow's Function, The Chow's Function given Drawdown is defined as the value of chow's function when we have prior information of other parameters used. Chow's Function is denoted by Fu symbol.

How to calculate Chow's Function given Drawdown using this online calculator? To use this online calculator for Chow's Function given Drawdown, enter Total Drawdown in Well (st) & Change in Drawdown (Δd) and hit the calculate button. Here is how the Chow's Function given Drawdown calculation can be explained with given input values -> 0.459091 = 0.83/0.22.

FAQ

What is Chow's Function given Drawdown?
The Chow's Function given Drawdown is defined as the value of chow's function when we have prior information of other parameters used and is represented as Fu = st/Δd or Chow's Function = Total Drawdown in Well/Change in Drawdown. The Total Drawdown in Well is defined as the reduction in hydraulic head observed at a well in an aquifer, typically due to pumping a well as part of an aquifer test or well test & Change in Drawdown at the two wells.
How to calculate Chow's Function given Drawdown?
The Chow's Function given Drawdown is defined as the value of chow's function when we have prior information of other parameters used is calculated using Chow's Function = Total Drawdown in Well/Change in Drawdown. To calculate Chow's Function given Drawdown, you need Total Drawdown in Well (st) & Change in Drawdown (Δd). With our tool, you need to enter the respective value for Total Drawdown in Well & Change in Drawdown and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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