Diffusion Coefficient Calculator

✖Apparent Dispersion Coefficient is a measure of the magnitude of diffusion which includes all Mixing Effects.ⓘ Apparent Dispersion Coefficient [D]			+10% -10%
✖Coordinate along the Channel describes how properties like velocity, pressure, and temperature vary along the length of the channel.ⓘ Coordinate along the Channel [x]			+10% -10%
✖Distance outside the Estuary refers to the spatial extent over which estuarine processes, such as sediment transport and water circulation, influence the surrounding marine environment.ⓘ Distance outside the Estuary [B]			+10% -10%

✖Diffusion Coefficient at x=0 is a parameter that quantifies the rate at which a substance diffuses from one region to another.ⓘ Diffusion Coefficient [D₀]

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Formula

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Diffusion Coefficient

Formula

`"D"_{"0"} = "D"*("x"+"B")/"B"`

Example

`"3.15"="0.6"*("17m"+"4m")/"4m"`

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Diffusion Coefficient Solution

STEP 0: Pre-Calculation Summary

Formula Used

Diffusion Coefficient at x=0 = Apparent Dispersion Coefficient*(Coordinate along the Channel+Distance outside the Estuary)/Distance outside the Estuary
D₀ = D*(x+B)/B
This formula uses 4 Variables

Variables Used

Diffusion Coefficient at x=0 - Diffusion Coefficient at x=0 is a parameter that quantifies the rate at which a substance diffuses from one region to another.
Apparent Dispersion Coefficient - Apparent Dispersion Coefficient is a measure of the magnitude of diffusion which includes all Mixing Effects.
Coordinate along the Channel - (Measured in Meter) - Coordinate along the Channel describes how properties like velocity, pressure, and temperature vary along the length of the channel.
Distance outside the Estuary - (Measured in Meter) - Distance outside the Estuary refers to the spatial extent over which estuarine processes, such as sediment transport and water circulation, influence the surrounding marine environment.

STEP 1: Convert Input(s) to Base Unit

Apparent Dispersion Coefficient: 0.6 --> No Conversion Required
Coordinate along the Channel: 17 Meter --> 17 Meter No Conversion Required
Distance outside the Estuary: 4 Meter --> 4 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

D₀ = D*(x+B)/B --> 0.6*(17+4)/4

Evaluating ... ...

D₀ = 3.15

STEP 3: Convert Result to Output's Unit

3.15 --> No Conversion Required

FINAL ANSWER

3.15 <-- Diffusion Coefficient at x=0

(Calculation completed in 00.004 seconds)

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Created by Mithila Muthamma PA

Coorg Institute of Technology (CIT), Coorg

Mithila Muthamma PA has created this Calculator and 2000+ more calculators!

Verified by Chandana P Dev

NSS College of Engineering (NSSCE), Palakkad

Chandana P Dev has verified this Calculator and 1700+ more calculators!

< 19 Salinity Variations with Tide Calculators

Salinity at Moment of Slack Water

Go Salinity at the Moment of Slack Water = Salinity of Water*exp(-(18*10^-6)*Fresh Water River Flow*Coordinate along the Channel^2-(0.045*Fresh Water River Flow^0.5))

Apparent Dispersion Coefficient which includes all Mixing Effects

Go Apparent Dispersion Coefficient = (Diffusion Coefficient at x=0*Distance outside the Estuary)/(Coordinate along the Channel+Distance outside the Estuary)

Coordinate along Channel given Apparent Dispersion Coefficient

Go Coordinate along the Channel = (Diffusion Coefficient at x=0*Distance outside the Estuary/Apparent Dispersion Coefficient)-Distance outside the Estuary

Diffusion Coefficient

Go Diffusion Coefficient at x=0 = Apparent Dispersion Coefficient*(Coordinate along the Channel+Distance outside the Estuary)/Distance outside the Estuary

Froude Number given Dimensionless Estuary number

Go Froude Number = sqrt((Estuary Number*Fresh Water River Flow*Tidal Period)/Volume of Tidal Prism)

Fresh Water River Flow given Dimensionless Estuary number

Go Fresh Water River Flow = (Volume of Tidal Prism*Froude Number^2)/(Estuary Number*Tidal Period)

Tide Period given Dimensionless Estuary number

Go Tidal Period = (Volume of Tidal Prism*Froude Number^2)/(Estuary Number*Fresh Water River Flow)

Dimensionless Estuary number

Go Estuary Number = (Volume of Tidal Prism*Froude Number^2)/(Fresh Water River Flow*Tidal Period)

Volume of tidal prism given dimensionless estuary number

Go Volume of Tidal Prism = (Estuary Number*Fresh Water River Flow*Tidal Period)/Froude Number^2

Fresh Water River Flow given Mixing Parameter

Go Fresh Water River Flow = (Mixing Parameter*Volume of Tidal Prism)/Tidal Period

Volume of tidal prism given mixing parameter

Go Volume of Tidal Prism = (Fresh Water River Flow*Tidal Period)/Mixing Parameter

Tidal Period given Mixing Parameter

Go Tidal Period = (Mixing Parameter*Volume of Tidal Prism)/Fresh Water River Flow

Mixing Parameter

Go Mixing Parameter = (Fresh Water River Flow*Tidal Period)/Volume of Tidal Prism

Froude Number based upon maximum flood current velocity at estuary mouth

Go Froude Number = sqrt(Estuary Number*Mixing Parameter)

Rate of Potential Energy Gain given Dimensionless Stratification Number

Go Rate of Potential Energy Gain = Rate of Energy Dissipation/Stratification Number

Rate of Energy Dissipation given Dimensionless Stratification Number

Go Rate of Energy Dissipation = Stratification Number*Rate of Potential Energy Gain

Dimensionless Stratification Number

Go Stratification Number = Rate of Energy Dissipation/Rate of Potential Energy Gain

Estuary Number given Froude Number and Mixing Parameter

Go Estuary Number = Froude Number^2/Mixing Parameter

Mixing Parameter given Dimensionless Estuary number

Go Mixing Parameter = Froude Number^2/Estuary Number

Diffusion Coefficient Formula

Diffusion Coefficient at x=0 = Apparent Dispersion Coefficient*(Coordinate along the Channel+Distance outside the Estuary)/Distance outside the Estuary
D₀ = D*(x+B)/B

What is River Navigation?

When a stretch of river is made navigable, a lock is sometimes required to bypass an obstruction such as a rapid, dam, or mill weir – because of the change in river level across the obstacle.
In large scale river navigation improvements, weirs and locks are used together. A weir will increase the depth of a shallow stretch, and the required lock will either be built in a gap in the weir, or at the downstream end of an artificial cut which bypasses the weir and perhaps a shallow stretch of river below it. A river improved by these means is often called a Waterway or River Navigation.

How to Calculate Diffusion Coefficient?

Diffusion Coefficient calculator uses Diffusion Coefficient at x = Apparent Dispersion Coefficient*(Coordinate along the Channel+Distance outside the Estuary)/Distance outside the Estuary to calculate the Diffusion Coefficient at x=0, The Diffusion Coefficient formula is defined as the Salinity reaches that of the Ocean influencing the extreme situations of salinity distribution (maximum and minimum intrusion), occur at moments of slack water. Diffusion Coefficient at x=0 is denoted by D₀ symbol.

How to calculate Diffusion Coefficient using this online calculator? To use this online calculator for Diffusion Coefficient, enter Apparent Dispersion Coefficient (D), Coordinate along the Channel (x) & Distance outside the Estuary (B) and hit the calculate button. Here is how the Diffusion Coefficient calculation can be explained with given input values -> 3.15 = 0.6*(17+4)/4.

FAQ

What is Diffusion Coefficient?

The Diffusion Coefficient formula is defined as the Salinity reaches that of the Ocean influencing the extreme situations of salinity distribution (maximum and minimum intrusion), occur at moments of slack water and is represented as D₀ = D*(x+B)/B or Diffusion Coefficient at x = Apparent Dispersion Coefficient*(Coordinate along the Channel+Distance outside the Estuary)/Distance outside the Estuary. Apparent Dispersion Coefficient is a measure of the magnitude of diffusion which includes all Mixing Effects, Coordinate along the Channel describes how properties like velocity, pressure, and temperature vary along the length of the channel & Distance outside the Estuary refers to the spatial extent over which estuarine processes, such as sediment transport and water circulation, influence the surrounding marine environment.

How to calculate Diffusion Coefficient?

The Diffusion Coefficient formula is defined as the Salinity reaches that of the Ocean influencing the extreme situations of salinity distribution (maximum and minimum intrusion), occur at moments of slack water is calculated using Diffusion Coefficient at x = Apparent Dispersion Coefficient*(Coordinate along the Channel+Distance outside the Estuary)/Distance outside the Estuary. To calculate Diffusion Coefficient, you need Apparent Dispersion Coefficient (D), Coordinate along the Channel (x) & Distance outside the Estuary (B). With our tool, you need to enter the respective value for Apparent Dispersion Coefficient, Coordinate along the Channel & Distance outside the Estuary 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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