Rise Velocity of Bubble in Bubbling Bed Calculator

✖Initial Velocity of Fluid refers to the Velocity of Fluid at the start of Reactor.ⓘ Initial Velocity of Fluid [u_i]			+10% -10%
✖Minimum Fluidization Velocity is the Velocity of the Fluid in the Reactor when the pressure drop exceeds the weight of solids.ⓘ Minimum Fluidization Velocity [u_mf]			+10% -10%
✖Rise Velocity of Bubble is the Velocity of Bubble when Rising, at Mininmum Fluidizing Conditions.ⓘ Rise Velocity of Bubble [u_br]			+10% -10%

✖Velocity in Bubbling Bed refers to total velocity in the Bubbling Bed Reactors, at Bubbling Conditions.ⓘ Rise Velocity of Bubble in Bubbling Bed [u_b]

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Formula

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Rise Velocity of Bubble in Bubbling Bed

Formula

`"u"_{"b"} = "u"_{"i"}-"u"_{"mf"}+"u"_{"br"}`

Example

`"2.609m/s"="4.08m/s"-"1.941m/s"+"0.47m/s"`

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Rise Velocity of Bubble in Bubbling Bed Solution

STEP 0: Pre-Calculation Summary

Formula Used

Velocity in Bubbling Bed = Initial Velocity of Fluid-Minimum Fluidization Velocity+Rise Velocity of Bubble
u_b = u_i-u_mf+u_br
This formula uses 4 Variables

Variables Used

Velocity in Bubbling Bed - (Measured in Meter per Second) - Velocity in Bubbling Bed refers to total velocity in the Bubbling Bed Reactors, at Bubbling Conditions.
Initial Velocity of Fluid - (Measured in Meter per Second) - Initial Velocity of Fluid refers to the Velocity of Fluid at the start of Reactor.
Minimum Fluidization Velocity - (Measured in Meter per Second) - Minimum Fluidization Velocity is the Velocity of the Fluid in the Reactor when the pressure drop exceeds the weight of solids.
Rise Velocity of Bubble - (Measured in Meter per Second) - Rise Velocity of Bubble is the Velocity of Bubble when Rising, at Mininmum Fluidizing Conditions.

STEP 1: Convert Input(s) to Base Unit

Initial Velocity of Fluid: 4.08 Meter per Second --> 4.08 Meter per Second No Conversion Required
Minimum Fluidization Velocity: 1.941 Meter per Second --> 1.941 Meter per Second No Conversion Required
Rise Velocity of Bubble: 0.47 Meter per Second --> 0.47 Meter per Second No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

u_b = u_i-u_mf+u_br --> 4.08-1.941+0.47

Evaluating ... ...

u_b = 2.609

STEP 3: Convert Result to Output's Unit

2.609 Meter per Second --> No Conversion Required

FINAL ANSWER

2.609 Meter per Second <-- Velocity in Bubbling Bed

(Calculation completed in 00.004 seconds)

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Anurag Group of Institutions (AGI), Hyderabad

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< 10+ Various Fluidized Reactors Calculators

Rate Constant of Phase between Bubble and Cloud

Go Rate Constant for Bubble Cloud Circulation = 4.50*(Minimum Fluidization Velocity/Diameter of Bubble)+5.85*((Diffusion Coefficient for Fluidized Reactors)^(1/2)*([g])^(1/4))/Diameter of Bubble^(5/4)

Velocity in Pneumatic Conveying

Go Velocity in Pneumatic Conveying = ((21.6*((Gas Flow Rate/Density of Gas)^0.542)*(Dimensionless Diameter^0.315))*sqrt([g]*Diameter of Particle))^(1/1.542)

Dimensionless Diameter for Fluidized Reactors at G/S Contacting Regime

Go Dimensionless Diameter = Diameter of Particle*(((Density of Gas*(Density of Solids-Density of Gas)*[g])/(Viscosity of Liquid)^2)^(1/3))

Velocity in Fast Fluidized Bed

Go Velocity in Turbulent Fast Fluidized Bed = 1.53*sqrt(((Density of Solids-Density of Gas)*[g]*Diameter of Particle)/Density of Gas)

Dimensionless Velocity for Fluidized Reactors at G/S Contacting Regime

Go Dimensionless Velocity = Velocity in Tube*((Density of Gas^2)/(Viscosity of Liquid*(Density of Solids-Density of Gas)*[g]))^(1/3)

Rate Constant of Phase between Cloud-Wake and Emulsion

Go Rate Constant for Cloud-Wake and Emulsion = 6.77*((Void Fraction at Minimum Fluidization*Diffusion Coefficient for Fluidized Reactors*Rise Velocity of Bubble)/Diameter of Bubble^3)^(1/2)

Terminal Velocity of Fluids for Irregular Shaped Particles

Go Terminal Velocity of Fluid = ((18/(Dimensionless Diameter)^2)+((2.335-(1.744*Sphericity of Particle))/sqrt(Dimensionless Diameter)))^(-1)

Rise Velocity of Bubble in Bubbling Bed

Go Velocity in Bubbling Bed = Initial Velocity of Fluid-Minimum Fluidization Velocity+Rise Velocity of Bubble

Terminal Velocity of Fluid for Spherical Particles

Go Terminal Velocity of Fluid = ((18/(Dimensionless Diameter)^2)+(0.591/sqrt(Dimensionless Diameter)))^(-1)

Rise Velocity of Bubble

Go Rise Velocity of Bubble = 0.711*sqrt([g]*Diameter of Bubble)

Rise Velocity of Bubble in Bubbling Bed Formula

Velocity in Bubbling Bed = Initial Velocity of Fluid-Minimum Fluidization Velocity+Rise Velocity of Bubble
u_b = u_i-u_mf+u_br

What is Bubbling Fluidized Bed?

A Bubbling Fluidized Bed(BFB) is a type of fluidized bed reactor or system characterized by the bubbling or churning motion of the solid particles within the bed. In a fluidized bed, a gas (usually air or another gas) is passed through a granular material at a sufficient velocity to suspend the particles and create a fluid-like behavior.

What are Fluidized Reactors?

Fluidized reactors are a type of chemical reactor that use a fluidized bed as a key component for carrying out various chemical processes. In a fluidized bed reactor, a solid material is suspended and behaves like a fluid when a gas or liquid flows through it. This creates a dynamic system with characteristics of both a solid and a fluid.

How to Calculate Rise Velocity of Bubble in Bubbling Bed?

Rise Velocity of Bubble in Bubbling Bed calculator uses Velocity in Bubbling Bed = Initial Velocity of Fluid-Minimum Fluidization Velocity+Rise Velocity of Bubble to calculate the Velocity in Bubbling Bed, Rise Velocity of Bubble in Bubbling Bed formula is defined as the velocity of the fluidizing gas, that influences the behavior and characteristics of the bed. Velocity in Bubbling Bed is denoted by u_b symbol.

How to calculate Rise Velocity of Bubble in Bubbling Bed using this online calculator? To use this online calculator for Rise Velocity of Bubble in Bubbling Bed, enter Initial Velocity of Fluid (u_i), Minimum Fluidization Velocity (u_mf) & Rise Velocity of Bubble (u_br) and hit the calculate button. Here is how the Rise Velocity of Bubble in Bubbling Bed calculation can be explained with given input values -> 2.61 = 4.08-1.941+0.47.

FAQ

What is Rise Velocity of Bubble in Bubbling Bed?

Rise Velocity of Bubble in Bubbling Bed formula is defined as the velocity of the fluidizing gas, that influences the behavior and characteristics of the bed and is represented as u_b = u_i-u_mf+u_br or Velocity in Bubbling Bed = Initial Velocity of Fluid-Minimum Fluidization Velocity+Rise Velocity of Bubble. Initial Velocity of Fluid refers to the Velocity of Fluid at the start of Reactor, Minimum Fluidization Velocity is the Velocity of the Fluid in the Reactor when the pressure drop exceeds the weight of solids & Rise Velocity of Bubble is the Velocity of Bubble when Rising, at Mininmum Fluidizing Conditions.

How to calculate Rise Velocity of Bubble in Bubbling Bed?

Rise Velocity of Bubble in Bubbling Bed formula is defined as the velocity of the fluidizing gas, that influences the behavior and characteristics of the bed is calculated using Velocity in Bubbling Bed = Initial Velocity of Fluid-Minimum Fluidization Velocity+Rise Velocity of Bubble. To calculate Rise Velocity of Bubble in Bubbling Bed, you need Initial Velocity of Fluid (u_i), Minimum Fluidization Velocity (u_mf) & Rise Velocity of Bubble (u_br). With our tool, you need to enter the respective value for Initial Velocity of Fluid, Minimum Fluidization Velocity & Rise Velocity of Bubble 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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