Variance of Spread of Tracer for Small Extents of Dispersion Formula

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Variance of Spread for Dispersion Number <0.01 related to how much a Distribution or Concentration Profile spreads out from a Central Point. Check FAQs
σ2 =2(DpL'u'3)
σ2 - Variance of Spread for Dispersion Number <0.01?Dp - Dispersion Coefficient at Dispersion Number < 0.01?L' - Length of Spread for Dispersion Number <0.01?u' - Velocity of Pulse for Dispersion Number <0.01?

Variance of Spread of Tracer for Small Extents of Dispersion Example

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With units
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Here is how the Variance of Spread of Tracer for Small Extents of Dispersion equation looks like with Values.

Here is how the Variance of Spread of Tracer for Small Extents of Dispersion equation looks like with Units.

Here is how the Variance of Spread of Tracer for Small Extents of Dispersion equation looks like.

2.4E-7Edit=2(0.0085Edit0.92Edit40Edit3)
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Variance of Spread of Tracer for Small Extents of Dispersion Solution

Follow our step by step solution on how to calculate Variance of Spread of Tracer for Small Extents of Dispersion?

FIRST Step Consider the formula
σ2 =2(DpL'u'3)
Next Step Substitute values of Variables
σ2 =2(0.0085m²/s0.92m40m/s3)
Next Step Prepare to Evaluate
σ2 =2(0.00850.92403)
Next Step Evaluate
σ2 =2.44375E-07
LAST Step Rounding Answer
σ2 =2.4E-7

Variance of Spread of Tracer for Small Extents of Dispersion Formula Elements

Variables
Variance of Spread for Dispersion Number <0.01
Variance of Spread for Dispersion Number <0.01 related to how much a Distribution or Concentration Profile spreads out from a Central Point.
Symbol: σ2
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Dispersion Coefficient at Dispersion Number < 0.01
Dispersion Coefficient at Dispersion Number < 0.01 is distinguished as Spreading of the Tracer in the reactor, that diffuses across a unit area in 1 s under the influence of a gradient of one unit.
Symbol: Dp
Measurement: DiffusivityUnit: m²/s
Note: Value should be greater than 0.
Length of Spread for Dispersion Number <0.01
The Length of Spread for Dispersion Number <0.01 of a Pulse provides Information about how far and how fast the Spread Propagates.
Symbol: L'
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Velocity of Pulse for Dispersion Number <0.01
Velocity of Pulse for Dispersion Number <0.01 is the Velocity at which a Pulse of Material or Information travels through a Process or a System.
Symbol: u'
Measurement: SpeedUnit: m/s
Note: Value should be greater than 0.

Other formulas in Dispersion Model category

​Go Concentration using Dispersion where Dispersion Number less than 0.01
C=12π(Dpu'L')exp(-(1-θ)24(Dpu'L'))
​Go Exit Age Distribution based on Dispersion Number
E=u''34πDp'lexp(-(l-(u''Δt))24Dp'lu'')
​Go Standard Deviation of Tracer based on Mean Residence Time for Large Deviations of Dispersion
S.DL.D=2(Dp'lu )-2((Dp'u l)2)(1-exp(-u lDp'))
​Go Mean Residence Time where Dispersion Number is less than 0.01
θ=1+(ln(c2π(Dpu'L'))4(Dpu'L'))

How to Evaluate Variance of Spread of Tracer for Small Extents of Dispersion?

Variance of Spread of Tracer for Small Extents of Dispersion evaluator uses Variance of Spread for Dispersion Number <0.01 = 2*(Dispersion Coefficient at Dispersion Number < 0.01*Length of Spread for Dispersion Number <0.01/Velocity of Pulse for Dispersion Number <0.01^3) to evaluate the Variance of Spread for Dispersion Number <0.01, Variance of Spread of Tracer for Small Extents of Dispersion formula is defined as Measure of Spread of Tracer in the Reactor. Variance of Spread for Dispersion Number <0.01 is denoted by σ2 symbol.

How to evaluate Variance of Spread of Tracer for Small Extents of Dispersion using this online evaluator? To use this online evaluator for Variance of Spread of Tracer for Small Extents of Dispersion, enter Dispersion Coefficient at Dispersion Number < 0.01 (Dp), Length of Spread for Dispersion Number <0.01 (L') & Velocity of Pulse for Dispersion Number <0.01 (u') and hit the calculate button.

FAQs on Variance of Spread of Tracer for Small Extents of Dispersion

What is the formula to find Variance of Spread of Tracer for Small Extents of Dispersion?
The formula of Variance of Spread of Tracer for Small Extents of Dispersion is expressed as Variance of Spread for Dispersion Number <0.01 = 2*(Dispersion Coefficient at Dispersion Number < 0.01*Length of Spread for Dispersion Number <0.01/Velocity of Pulse for Dispersion Number <0.01^3). Here is an example- 2.4E-7 = 2*(0.0085*0.92/40^3).
How to calculate Variance of Spread of Tracer for Small Extents of Dispersion?
With Dispersion Coefficient at Dispersion Number < 0.01 (Dp), Length of Spread for Dispersion Number <0.01 (L') & Velocity of Pulse for Dispersion Number <0.01 (u') we can find Variance of Spread of Tracer for Small Extents of Dispersion using the formula - Variance of Spread for Dispersion Number <0.01 = 2*(Dispersion Coefficient at Dispersion Number < 0.01*Length of Spread for Dispersion Number <0.01/Velocity of Pulse for Dispersion Number <0.01^3).
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