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Change in Radial Distance Formula

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Change in Radial Distance is the variation in distance from a pumping well to a specific point in an aquifer over time. Check FAQs

dr = K \cdot \frac{dh}{V r}

dr - Change in Radial Distance?K - Coefficient of Permeability?dh - Change in Piezometric Head?V_r - Velocity of Flow at Radial Distance?

Change in Radial Distance Example

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Here is how the Change in Radial Distance equation looks like with Values.

Here is how the Change in Radial Distance equation looks like with Units.

Here is how the Change in Radial Distance equation looks like.

0.25 = 3 \cdot \frac{1.25}{15}

0.25m = 3cm/s \cdot \frac{1.25m}{15cm/s}

0.25 = 3 \cdot \frac{1.25}{15}

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Change in Radial Distance Solution

Follow our step by step solution on how to calculate Change in Radial Distance?

FIRST Step Consider the formula

dr = K \cdot \frac{dh}{V r}

Next Step Substitute values of Variables

∴

dr = 3cm/s \cdot \frac{1.25m}{15cm/s}

Next Step Convert Units

∴

dr = 0.03m/s \cdot \frac{1.25m}{0.15m/s}

Next Step Prepare to Evaluate

∴

dr = 0.03 \cdot \frac{1.25}{0.15}

LAST Step Evaluate

∴

dr = 0.25m

Change in Radial Distance Formula Elements

Variables

Change in Radial Distance

Change in Radial Distance is the variation in distance from a pumping well to a specific point in an aquifer over time.

Symbol: dr

Measurement: LengthUnit: m

Note: Value can be positive or negative.

Formulas to find Change in Radial Distance

Coefficient of Permeability

Coefficient of Permeability is the measure of the ability of a porous material (such as soil or rock) to transmit fluids through it. It quantifies how easily water can flow through the material.

Symbol: K

Measurement: SpeedUnit: cm/s

Note: Value can be positive or negative.

Formulas to find Coefficient of Permeability

Change in Piezometric Head

Change in Piezometric Head is the difference in hydraulic head between two points within an aquifer or groundwater system.

Symbol: dh

Measurement: LengthUnit: m

Note: Value can be positive or negative.

Formulas to find Change in Piezometric Head

Velocity of Flow at Radial Distance

Velocity of Flow at Radial Distance is the speed at which groundwater moves through a porous medium at a specific radial distance from a well or other point of interest.

Symbol: V_r

Measurement: SpeedUnit: cm/s

Note: Value can be positive or negative.

Formulas to find Velocity of Flow at Radial Distance

Other formulas in Steady Flow into a Well category

Go Velocity of Flow by Darcy's Law at Radical Distance

V r = K \cdot (\frac{dh}{dr})

Go Change in Piezometric Head

dh = V r \cdot \frac{dr}{K}

Go Cylindrical Surface through which Velocity of Flow Occurs

S = 2 \cdot π \cdot r \cdot H a

Go Discharge Entering Cylindrical Surface to Well Discharge

Q = (2 \cdot π \cdot r \cdot H a) \cdot (K \cdot (\frac{dh}{dr}))

How to Evaluate Change in Radial Distance?

Change in Radial Distance evaluator uses Change in Radial Distance = Coefficient of Permeability*Change in Piezometric Head/Velocity of Flow at Radial Distance to evaluate the Change in Radial Distance, The Change in Radial Distance formula is defined as the variation in distance from a pumping well to a specific point in an aquifer over time. Change in Radial Distance is denoted by dr symbol.

How to evaluate Change in Radial Distance using this online evaluator? To use this online evaluator for Change in Radial Distance, enter Coefficient of Permeability (K), Change in Piezometric Head (dh) & Velocity of Flow at Radial Distance (V_r) and hit the calculate button.

FAQs on Change in Radial Distance

What is the formula to find Change in Radial Distance?

The formula of Change in Radial Distance is expressed as Change in Radial Distance = Coefficient of Permeability*Change in Piezometric Head/Velocity of Flow at Radial Distance. Here is an example- 0.25 = 0.03*1.25/0.15.

How to calculate Change in Radial Distance?

With Coefficient of Permeability (K), Change in Piezometric Head (dh) & Velocity of Flow at Radial Distance (V_r) we can find Change in Radial Distance using the formula - Change in Radial Distance = Coefficient of Permeability*Change in Piezometric Head/Velocity of Flow at Radial Distance.

Can the Change in Radial Distance be negative?

Yes, the Change in Radial Distance, measured in Length can be negative.

Which unit is used to measure Change in Radial Distance?

Change in Radial Distance is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Change in Radial Distance can be measured.

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Change in Radial Distance Formula

Change in Radial Distance Example

Change in Radial Distance Solution

Change in Radial Distance Formula Elements

Other formulas in Steady Flow into a Well category

How to Evaluate Change in Radial Distance?

FAQs on Change in Radial Distance

Variable Name