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 refers to the distance measured along the length of the channel from a reference point, such as the upstream end 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 \cdot \frac{x + B}{B}

Example

3.15 = 0.6 \cdot \frac{17 m + 4 m}{4 m}

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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 refers to the distance measured along the length of the channel from a reference point, such as the upstream end 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

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< Salinity Variations with Tide Calculators

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

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Tidal Period given Mixing Parameter

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Mixing Parameter

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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 determined when the salinity matches that of the ocean, affecting the extreme salinity distribution (maximum and minimum intrusion) during 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 determined when the salinity matches that of the ocean, affecting the extreme salinity distribution (maximum and minimum intrusion) during 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 refers to the distance measured along the length of the channel from a reference point, such as the upstream end 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 determined when the salinity matches that of the ocean, affecting the extreme salinity distribution (maximum and minimum intrusion) during 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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