The image above represents mobility. To calculate mobility, two essential parameters are needed: Steady State Velocity (v∞) and Drag Force (F).
The formula for calculating mobility:
B = v∞ / F
Where:
B = Mobility
v∞ = Steady State Velocity
F = Drag Force
Let’s solve an example;
Find the mobility when the steady state velocity is 22 and the drag force is 11.
This implies that;
v∞ = Steady State Velocity = 22
F = Drag Force = 11
That is, B = v∞ / F
B =Â 22Â /Â 11
B = 2
Therefore, the mobility is 2 m/Ns.
Calculating the Steady State Velocity when the Mobility and the Drag Force are Given
v∞ = B x F
Where;
v∞ = Steady State Velocity
B = Mobility
F = Drag Force
Let’s solve an example;
Find the steady state velocity when the mobility is 14 and the drag force is 2.
This implies that;
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B = Mobility = 14
F = Drag Force = 2
v∞ = B x F
So, v∞ = 14 x 2
v∞ = 28
Therefore, the steady state velocity is 28 m/s.
Read more:Â How to Calculate and Solve for Stokes-Einstein Equation of Diffusivity | Mass Transfer
Calculating the Drag Force when the Mobility and the Steady State Velocity are Given
F = v∞ / B
Where:
F = Drag Force
B = Mobility
v∞ = Steady State Velocity
Let’s solve an example;
Find the drag force when the mobility is 10 and the steady state velocity is 30.
This implies that;
B = Mobility = 10
v∞ = Steady State Velocity = 30
F = v∞ / B
That is, F = 30 / 10
F = 3
Therefore, the drag force is 3 N.
How to Calculate Mobility Using Nickzom Calculator
Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the mobility.
To get the answer and workings of the mobility using the Nickzom Calculator – The Calculator Encyclopedia. First, you need to obtain the app.
You can get this app via any of these means:
Web – https://www.nickzom.org/calculator-plus
To get access to the professional version via web, you need to register and subscribe for NGN 2,000 per annum to have utter access to all functionalities.
You can also try the demo version via https://www.nickzom.org/calculator
Android (Paid) – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator
Android (Free) – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator
Apple (Paid) – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8
Once, you have obtained the calculator encyclopedia app, proceed to the Calculator Map, then click on Materials and Metallurgical under Engineering.
Now, Click on Mass Transport under Materials and Metallurgical
Now, Click on Mobility under Mass Transport
The screenshot below displays the page or activity to enter your values, to get the answer for the mobility according to the respective parameter which is the Steady State Velocity (v∞) and Drag Force (F).
Now, enter the values appropriately and accordingly for the parameters as required by the Steady State Velocity (v∞) is 22 and Drag Force (F) is 11.
Finally, Click on Calculate
As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the mobility and presents the formula, workings and steps too.
