Flooding Velocity for given Flooding Constant Calculator

✖Souder and Brown Constant is a dimensionless empirical constant used in estimating the flooding conditions for distillation columns.ⓘ Souder and Brown Constant [C_SB]			+10% -10%
✖Liquid Density is defined as the ratio of mass of given fluid with respect to the volume that it occupies.ⓘ Liquid Density [ρ_L]			+10% -10%
✖Vapor Density in Distillation is defined as the ratio of mass to the volume of vapor at particular temperature in a distillation Column.ⓘ Vapor Density in Distillation [ρ_V]			+10% -10%

✖Flooding velocity refers to the maximum vapor velocity that exceeds a certain critical value which would result into flooding in a tray tower.ⓘ Flooding Velocity for given Flooding Constant [u_f]

⎘ Copy

👎

Formula

✖

Flooding Velocity for given Flooding Constant

Formula

`"u"_{"f"} = "C"_{"SB"}*sqrt(("ρ"_{"L"}-"ρ"_{"V"})/"ρ"_{"V"})`

Example

`"2.120912m/s"="0.088"*sqrt(("995kg/m³"-"1.71kg/m³")/"1.71kg/m³")`

Calculator

LaTeX

Reset

👍

Download Process Equipment Design Formula PDF PDF Image

Flooding Velocity for given Flooding Constant Solution

STEP 0: Pre-Calculation Summary

Formula Used

Flooding Velocity = Souder and Brown Constant*sqrt((Liquid Density-Vapor Density in Distillation)/Vapor Density in Distillation)
u_f = C_SB*sqrt((ρ_L-ρ_V)/ρ_V)
This formula uses 1 Functions, 4 Variables

Functions Used

sqrt - A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number., sqrt(Number)

Variables Used

Flooding Velocity - (Measured in Meter per Second) - Flooding velocity refers to the maximum vapor velocity that exceeds a certain critical value which would result into flooding in a tray tower.
Souder and Brown Constant - Souder and Brown Constant is a dimensionless empirical constant used in estimating the flooding conditions for distillation columns.
Liquid Density - (Measured in Kilogram per Cubic Meter) - Liquid Density is defined as the ratio of mass of given fluid with respect to the volume that it occupies.
Vapor Density in Distillation - (Measured in Kilogram per Cubic Meter) - Vapor Density in Distillation is defined as the ratio of mass to the volume of vapor at particular temperature in a distillation Column.

STEP 1: Convert Input(s) to Base Unit

Souder and Brown Constant: 0.088 --> No Conversion Required
Liquid Density: 995 Kilogram per Cubic Meter --> 995 Kilogram per Cubic Meter No Conversion Required
Vapor Density in Distillation: 1.71 Kilogram per Cubic Meter --> 1.71 Kilogram per Cubic Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

u_f = C_SB*sqrt((ρ_L-ρ_V)/ρ_V) --> 0.088*sqrt((995-1.71)/1.71)

Evaluating ... ...

u_f = 2.12091199626633

STEP 3: Convert Result to Output's Unit

2.12091199626633 Meter per Second --> No Conversion Required

FINAL ANSWER

2.12091199626633 ≈ 2.120912 Meter per Second <-- Flooding Velocity

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Chemical Engineering » Process Equipment Design » Column Design » Distillation Tower Design » Flooding Velocity for given Flooding Constant

Credits

Created by Rishi Vadodaria

Malviya National Institute Of Technology (MNIT JAIPUR ), JAIPUR

Rishi Vadodaria has created this Calculator and 200+ more calculators!

Verified by Vaibhav Mishra

DJ Sanghvi College of Engineering (DJSCE), Mumbai

Vaibhav Mishra has verified this Calculator and 200+ more calculators!

< 25 Distillation Tower Design Calculators

Relative Volatility of Two Components Based on Normal Boiling Point and Latent Heat of Vaporization

Go Relative Volatility = exp(0.25164*((1/Normal Boiling Point of Component 1)-(1/Normal Boiling Point of Component 2))*(Latent Heat of Vaporization of Component 1+Latent Heat of Vaporization of Component 2))

Maximum Allowable Vapor Velocity given Plate Spacing and Fluid Densities

Go Maximum Allowable Vapor Velocity = (-0.171*(Plate Spacing)^2+0.27*Plate Spacing-0.047)*((Liquid Density-Vapor Density in Distillation)/Vapor Density in Distillation)^0.5

Column Diameter given Maximum Vapor Rate and Maximum Vapor Velocity

Go Column Diameter = sqrt((4*Vapor Mass Flowrate)/(pi*Vapor Density in Distillation*Maximum Allowable Vapor Velocity))

Tower Cross Sectional Area given Gas Volumetric Flow and Flooding Velocity

Go Tower Cross Sectional Area = Volumetric Gas Flow/((Fractional Approach to Flooding Velocity*Flooding Velocity)*(1-Fractional Downcomer Area))

Minimum External Reflux given Compositions

Go External Reflux Ratio = (Distillate Composition-Equilibrium Vapor Composition)/(Equilibrium Vapor Composition-Equilibrium Liquid Composition)

Maximum Allowable Mass Velocity using Bubble Cap Trays

Go Maximum Allowable Mass Velocity = Entrainment Factor*(Vapor Density in Distillation*(Liquid Density-Vapor Density in Distillation)^(1/2))

Minimum Internal Reflux given Compositions

Go Internal Reflux Ratio = (Distillate Composition-Equilibrium Vapor Composition)/(Distillate Composition-Equilibrium Liquid Composition)

Dry Plate Pressure Drop in Distillation Column Design

Go Dry Plate Head Loss = 51*((Vapor Velocity Based on Hole Area/Orifice Coefficient)^2)*(Vapor Density in Distillation/Liquid Density)

Flooding Velocity in Distillation Column Design

Go Flooding Velocity = Capacity Factor*((Liquid Density-Vapor Density in Distillation)/Vapor Density in Distillation)^0.5

Weep Point Velocity in Distillation Column Design

Go Weep Point Vapor Velocity Based on Hole Area = (Weep Point Correlation Constant-0.90*(25.4-Hole Diameter))/((Vapor Density in Distillation)^0.5)

Liquid Vapor Flow Factor in Distillation Column Design

Go Flow Factor = (Liquid Mass Flowrate/Vapor Mass Flowrate)*((Vapor Density in Distillation/Liquid Density)^0.5)

Downcomer Residence Time in Distillation Column

Go Residence Time = (Downcomer Area*Clear Liquid Backup*Liquid Density)/Liquid Mass Flowrate

Internal Reflux Ratio Based on Liquid and Distillate Flowrates

Go Internal Reflux Ratio = Liquid Reflux Flowrate/(Liquid Reflux Flowrate+Distillate Flowrate)

Column Diameter Based on Vapor Flowrate and Mass Velocity of Vapor

Go Column Diameter = ((4*Vapor Mass Flowrate)/(pi*Maximum Allowable Mass Velocity))^(1/2)

Head Loss in Downcomer of Tray Tower

Go Downcomer Headloss = 166*((Liquid Mass Flowrate/(Liquid Density*Downcomer Area)))^2

Height of Liquid Crest over Weir

Go Weir Crest = (750/1000)*((Liquid Mass Flowrate/(Weir Length*Liquid Density))^(2/3))

Active Area given Gas Volumetric Flow and Flow Velocity

Go Active Area = Volumetric Gas Flow/(Fractional Downcomer Area*Flooding Velocity)

Fractional Downcomer Area given Total Cross Sectional Area

Go Fractional Downcomer Area = 2*(Downcomer Area/Tower Cross Sectional Area)

Fractional Active Area given Downcomer Area and Total Column Area

Go Fractional Active Area = 1-2*(Downcomer Area/Tower Cross Sectional Area)

Internal Reflux Ratio Given External Reflux Ratio

Go Internal Reflux Ratio = External Reflux Ratio/(External Reflux Ratio+1)

Tower Cross Sectional Area given Fractional Active Area

Go Tower Cross Sectional Area = Active Area/(1-Fractional Downcomer Area)

Tower Cross Sectional Area given Active Area

Go Tower Cross Sectional Area = Active Area/(1-Fractional Downcomer Area)

Clearance Area under Downcomer given Weir Length and Apron Height

Go Clearance Area Under Downcomer = Apron Height*Weir Length

Fractional Active Area given Fractional Downcomer Area

Go Fractional Active Area = 1-Fractional Downcomer Area

Residual Head Loss in Pressure in Distillation Column

Go Residual Head Loss = (12.5*10^3)/Liquid Density

Flooding Velocity for given Flooding Constant Formula

Flooding Velocity = Souder and Brown Constant*sqrt((Liquid Density-Vapor Density in Distillation)/Vapor Density in Distillation)
u_f = C_SB*sqrt((ρ_L-ρ_V)/ρ_V)

What is Flooding in Distillation Column?

Flooding in a distillation column is a phenomenon that occurs when the vapor velocity through the column becomes excessive, hindering the proper functioning of the trays or packing. Flooding is a critical issue that can lead to a loss of separation efficiency and impaired column performance. Flooding results in the accumulation of liquid on trays or packing to a level where it impedes the upward flow of vapor. This excessive liquid holdup prevents efficient vapor-liquid contact and disrupts the separation of components. Flooding leads to a loss of tray efficiency as the vapor is unable to effectively disperse through the liquid. This results in decreased mass transfer between the vapor and liquid phases, negatively impacting the separation of components.

How to Calculate Flooding Velocity for given Flooding Constant?

Flooding Velocity for given Flooding Constant calculator uses Flooding Velocity = Souder and Brown Constant*sqrt((Liquid Density-Vapor Density in Distillation)/Vapor Density in Distillation) to calculate the Flooding Velocity, The Flooding Velocity for given Flooding Constant formula is defined as maximum limiting velocity of the vapor that can lead to flooding in a distillation column. Flooding Velocity is denoted by u_f symbol.

How to calculate Flooding Velocity for given Flooding Constant using this online calculator? To use this online calculator for Flooding Velocity for given Flooding Constant, enter Souder and Brown Constant (C_SB), Liquid Density (ρ_L) & Vapor Density in Distillation (ρ_V) and hit the calculate button. Here is how the Flooding Velocity for given Flooding Constant calculation can be explained with given input values -> 2.120912 = 0.088*sqrt((995-1.71)/1.71).

FAQ

What is Flooding Velocity for given Flooding Constant?

The Flooding Velocity for given Flooding Constant formula is defined as maximum limiting velocity of the vapor that can lead to flooding in a distillation column and is represented as u_f = C_SB*sqrt((ρ_L-ρ_V)/ρ_V) or Flooding Velocity = Souder and Brown Constant*sqrt((Liquid Density-Vapor Density in Distillation)/Vapor Density in Distillation). Souder and Brown Constant is a dimensionless empirical constant used in estimating the flooding conditions for distillation columns, Liquid Density is defined as the ratio of mass of given fluid with respect to the volume that it occupies & Vapor Density in Distillation is defined as the ratio of mass to the volume of vapor at particular temperature in a distillation Column.

How to calculate Flooding Velocity for given Flooding Constant?

The Flooding Velocity for given Flooding Constant formula is defined as maximum limiting velocity of the vapor that can lead to flooding in a distillation column is calculated using Flooding Velocity = Souder and Brown Constant*sqrt((Liquid Density-Vapor Density in Distillation)/Vapor Density in Distillation). To calculate Flooding Velocity for given Flooding Constant, you need Souder and Brown Constant (C_SB), Liquid Density (ρ_L) & Vapor Density in Distillation (ρ_V). With our tool, you need to enter the respective value for Souder and Brown Constant, Liquid Density & Vapor Density in Distillation and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Flooding Velocity?

In this formula, Flooding Velocity uses Souder and Brown Constant, Liquid Density & Vapor Density in Distillation. We can use 1 other way(s) to calculate the same, which is/are as follows -

Flooding Velocity = Capacity Factor*((Liquid Density-Vapor Density in Distillation)/Vapor Density in Distillation)^0.5

Home

FREE PDFs

🔍 Search