✖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.ⓘ Coefficient of Permeability [K]			+10% -10%
✖Change in Piezometric Head is the difference in hydraulic head between two points within an aquifer or groundwater system.ⓘ Change in Piezometric Head [dh]			+10% -10%
✖Change in Radial Distance is the variation in distance from a pumping well to a specific point in an aquifer over time.ⓘ Change in Radial Distance [dr]			+10% -10%

✖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.ⓘ Velocity of Flow by Darcy's Law at Radical Distance [V_r]

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Formula

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Velocity of Flow by Darcy's Law at Radical Distance

Formula

`"V"_{"r"} = "K"*("dh"/"dr")`

Example

`"15cm/s"="3.0cm/s"*("1.25m"/"0.25m")`

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

STEP 0: Pre-Calculation Summary

Formula Used

Velocity of Flow at Radial Distance = Coefficient of Permeability*(Change in Piezometric Head/Change in Radial Distance)
V_r = K*(dh/dr)
This formula uses 4 Variables

Variables Used

Velocity of Flow at Radial Distance - (Measured in Meter per Second) - 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.
Coefficient of Permeability - (Measured in Meter per Second) - 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.
Change in Piezometric Head - (Measured in Meter) - Change in Piezometric Head is the difference in hydraulic head between two points within an aquifer or groundwater system.
Change in Radial Distance - (Measured in Meter) - Change in Radial Distance is the variation in distance from a pumping well to a specific point in an aquifer over time.

STEP 1: Convert Input(s) to Base Unit

Coefficient of Permeability: 3 Centimeter per Second --> 0.03 Meter per Second (Check conversion here)
Change in Piezometric Head: 1.25 Meter --> 1.25 Meter No Conversion Required
Change in Radial Distance: 0.25 Meter --> 0.25 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

V_r = K*(dh/dr) --> 0.03*(1.25/0.25)

Evaluating ... ...

V_r = 0.15

STEP 3: Convert Result to Output's Unit

0.15 Meter per Second -->15 Centimeter per Second (Check conversion here)

FINAL ANSWER

15 Centimeter per Second <-- Velocity of Flow at Radial Distance

(Calculation completed in 00.004 seconds)

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< 10+ Steady Flow into a Well Calculators

Thiem's equilibrium equation for steady flow in confined aquifer

Go Steady Flow in a Confined Aquifer = 2*pi*Coefficient of Permeability*Width of Aquifer*(Piezometric Head at Radial Distance r2-Piezometric Head at Radial Distance r1)/ln(Radial Distance at Observation Well 2/Radial Distance at Observation Well 1)

Equilibrium Equation for Flow in Confined Aquifer at Observation Well

Go Discharge Entering Cylindrical Surface into Well = (2*pi*Transmissivity*(Piezometric Head at Radial Distance r2-Piezometric Head at Radial Distance r1))/ln(Radial Distance at Observation Well 2/Radial Distance at Observation Well 1)

Transmissivity when Discharge and Drawdowns are considered

Go Transmissivity = Steady Flow in a Confined Aquifer*ln(Radial Distance at Observation Well 2/Radial Distance at Observation Well 1)/(2*pi*(Drawdown at Start of Recuperation-Drawdown at a Time))

Transmissivity when Discharge at Edge of Zone of Influence

Go Transmissivity at Edge of Zone of Influence = (Steady Flow in a Confined Aquifer*ln(Radial Distance at Observation Well 2/Radial Distance at Observation Well 1))/(2*pi*Possible Drawdown in Confined Aquifer)

Discharge Observed at Edge of Zone of Influence

Go Discharge Observed at Edge of Zone of Influence = 2*pi*Transmissivity*Possible Drawdown in Confined Aquifer/ln(Radial Distance at Observation Well 2/Radial Distance at Observation Well 1)

Discharge Entering Cylindrical Surface to Well Discharge

Go Discharge Entering Cylindrical Surface into Well = (2*pi*Radial Distance*Width of Aquifer)*(Coefficient of Permeability*(Change in Piezometric Head/Change in Radial Distance))

Velocity of Flow by Darcy's Law at Radical Distance

Go Velocity of Flow at Radial Distance = Coefficient of Permeability*(Change in Piezometric Head/Change in Radial Distance)

Change in Piezometric Head

Go Change in Piezometric Head = Velocity of Flow at Radial Distance*Change in Radial Distance/Coefficient of Permeability

Change in Radial Distance

Go Change in Radial Distance = Coefficient of Permeability*Change in Piezometric Head/Velocity of Flow at Radial Distance

Cylindrical Surface through which Velocity of Flow Occurs

Go Surface through which the Velocity of Flow Occurs = 2*pi*Radial Distance*Width of Aquifer

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

Velocity of Flow at Radial Distance = Coefficient of Permeability*(Change in Piezometric Head/Change in Radial Distance)
V_r = K*(dh/dr)

What is Recharge?

Recharge is the primary method through which water enters an aquifer. This process usually occurs in the vadose zone below plant roots and, is often expressed as a flux to the water table surface. Groundwater recharge also encompasses water moving away from the water table farther into the saturated zone.

How to Calculate Velocity of Flow by Darcy's Law at Radical Distance?

Velocity of Flow by Darcy's Law at Radical Distance calculator uses Velocity of Flow at Radial Distance = Coefficient of Permeability*(Change in Piezometric Head/Change in Radial Distance) to calculate the Velocity of Flow at Radial Distance, The Velocity of Flow by Darcy's Law at Radical Distance formula is defined as the volume of fluid which passes per unit time at a radical distance. Velocity of Flow at Radial Distance is denoted by V_r symbol.

How to calculate Velocity of Flow by Darcy's Law at Radical Distance using this online calculator? To use this online calculator for Velocity of Flow by Darcy's Law at Radical Distance, enter Coefficient of Permeability (K), Change in Piezometric Head (dh) & Change in Radial Distance (dr) and hit the calculate button. Here is how the Velocity of Flow by Darcy's Law at Radical Distance calculation can be explained with given input values -> 1500 = 0.03*(1.25/0.25).

FAQ

What is Velocity of Flow by Darcy's Law at Radical Distance?

The Velocity of Flow by Darcy's Law at Radical Distance formula is defined as the volume of fluid which passes per unit time at a radical distance and is represented as V_r = K*(dh/dr) or Velocity of Flow at Radial Distance = Coefficient of Permeability*(Change in Piezometric Head/Change in Radial Distance). 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, Change in Piezometric Head is the difference in hydraulic head between two points within an aquifer or groundwater system & Change in Radial Distance is the variation in distance from a pumping well to a specific point in an aquifer over time.

How to calculate Velocity of Flow by Darcy's Law at Radical Distance?

The Velocity of Flow by Darcy's Law at Radical Distance formula is defined as the volume of fluid which passes per unit time at a radical distance is calculated using Velocity of Flow at Radial Distance = Coefficient of Permeability*(Change in Piezometric Head/Change in Radial Distance). To calculate Velocity of Flow by Darcy's Law at Radical Distance, you need Coefficient of Permeability (K), Change in Piezometric Head (dh) & Change in Radial Distance (dr). With our tool, you need to enter the respective value for Coefficient of Permeability, Change in Piezometric Head & Change in Radial Distance 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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