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Drawdown given Chow's Function Formula

GoDrawdown given Well Function Formula

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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. Check FAQs

s t = F u \cdot Δd

s_t - Total Drawdown in Well?F_u - Chow's Function?Δd - Change in Drawdown?

Drawdown given Chow's Function Example

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Here is how the Drawdown given Chow's Function equation looks like with Values.

Here is how the Drawdown given Chow's Function equation looks like with Units.

Here is how the Drawdown given Chow's Function equation looks like.

0.8809 = 3.83 \cdot 0.23

0.8809m = 3.83 \cdot 0.23m

0.8809 = 3.83 \cdot 0.23

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Drawdown given Chow's Function Solution

Follow our step by step solution on how to calculate Drawdown given Chow's Function?

FIRST Step Consider the formula

s t = F u \cdot Δd

Next Step Substitute values of Variables

∴

s t = 3.83 \cdot 0.23m

Next Step Prepare to Evaluate

∴

s t = 3.83 \cdot 0.23

LAST Step Evaluate

∴

s t = 0.8809m

Drawdown given Chow's Function Formula Elements

Variables

Total Drawdown in Well

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.

Symbol: s_t

Measurement: LengthUnit: m

Note: Value can be positive or negative.

Formulas to find Total Drawdown in Well

Chow's Function

Chow's Function is a constant given by chow.

Symbol: F_u

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Chow's Function

Change in Drawdown

Change in Drawdown is defined as the difference at the two wells.

Symbol: Δd

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Change in Drawdown

Other Formulas to find Total Drawdown in Well

Go Drawdown given Well Function

s t = \frac{Q \cdot W u}{4 \cdot π \cdot F c}

Other formulas in Drawdown and Change in Drawdown category

Go Change in Drawdown given Formation Constant T

Δd = \frac{2.303 \cdot Q}{4 \cdot π \cdot F c}

Go Change in Drawdown given Time at 1st and 2nd Instance

Δs = \frac{2.303 \cdot Q \cdot \log ((\frac{t2}{t 1}), 10)}{4 \cdot π \cdot t hr}

Go Chow's Function given Drawdown

F u = \frac{s t}{Δd}

Go Change in Drawdown given Chow's Function

Δd = \frac{s t}{F u}

How to Evaluate Drawdown given Chow's Function?

Drawdown given Chow's Function evaluator uses Total Drawdown in Well = Chow's Function*Change in Drawdown to evaluate the Total Drawdown in Well, Drawdown given Chow's Function formula is defined as a measure of the reduction in water surface elevation during unsteady flow conditions, typically observed in open channels or rivers, and is a critical parameter in understanding the dynamics of unsteady flow. Total Drawdown in Well is denoted by s_t symbol.

How to evaluate Drawdown given Chow's Function using this online evaluator? To use this online evaluator for Drawdown given Chow's Function, enter Chow's Function (F_u) & Change in Drawdown (Δd) and hit the calculate button.

FAQs on Drawdown given Chow's Function

What is the formula to find Drawdown given Chow's Function?

The formula of Drawdown given Chow's Function is expressed as Total Drawdown in Well = Chow's Function*Change in Drawdown. Here is an example- 0.8809 = 3.83*0.23.

How to calculate Drawdown given Chow's Function?

With Chow's Function (F_u) & Change in Drawdown (Δd) we can find Drawdown given Chow's Function using the formula - Total Drawdown in Well = Chow's Function*Change in Drawdown.

What are the other ways to Calculate Total Drawdown in Well?

Here are the different ways to Calculate Total Drawdown in Well-

Total Drawdown in Well=(Discharge*Well Function of u)/(4*pi*Formation Constant for Unsteady Flow)

Can the Drawdown given Chow's Function be negative?

Yes, the Drawdown given Chow's Function, measured in Length can be negative.

Which unit is used to measure Drawdown given Chow's Function?

Drawdown given Chow's Function is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Drawdown given Chow's Function can be measured.

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