How to Calculate and Solve for Velocity of Newtonian Fluid | Transport Phenomena
Last Updated on October 1, 2021
The image above represent velocity of newtonian fluid.
To compute for velocity of newtonian fluid, five essential parameters are needed and these parameters are Change in Pressure (ΔP), Distance between Fluid Flow (L), Diameter of Pipe (y), Separation Distance of Atoms (δ) and Viscosity (η).
The formula for calculating velocity of newtonian fluid:
v = (δ² – y²)ΔP / 2η.L
Where:
v = Velocity of Newtonian Fluid
ΔP = Change in Pressure
L = Distance between Fluid Flow
y = Diameter of Pipe
δ = Separation Distance of Atoms
η = Viscosity
Let’s solve an example;
Find the velocity of newtonian fluid when the change in pressure is 22, the distance between fluid flow is 13, the diameter of pipe is 7, the separation distance of atoms is 11 and the viscosity is 5.
This implies that;
ΔP = Change in Pressure = 22
L = Distance between Fluid Flow = 13
y = Diameter of Pipe = 7
δ = Separation Distance of Atoms = 11
η = Viscosity = 5
v = (δ² – y²)ΔP / 2η.L
v = (11² – 7²)22 / 2(5).(13)
v = (121 – 49)22 / (10).(13)
v = (72)22 / 130
v = 1584 / 130
v = 12.18
Therefore, the velocity of newtonian fluid is 12.18 m/s.
Calculating the Change in Pressure when the Velocity of Newtonian Fluid, the Distance between Fluid Flow, the Diameter of Pipe, the Separation Distance of Atoms and the Viscosity is Given.
ΔP = v x 2η.L / (δ² – y²)
Where:
ΔP = Change in Pressure
v = Velocity of Newtonian Fluid
L = Distance between Fluid Flow
y = Diameter of Pipe
δ = Separation Distance of Atoms
η = Viscosity
Let’s solve an example;
Find the change in pressure when the velocity of newtonian fluid is 4, the distance between fluid flow is 2, the diameter of pipe is 3, the separation distance of atoms is 8 and the viscosity is 6.
This implies that;
v = Velocity of Newtonian Fluid = 4
L = Distance between Fluid Flow = 2
y = Diameter of Pipe = 3
δ = Separation Distance of Atoms = 8
η = Viscosity = 6
ΔP = v x 2η.L / (δ² – y²)
ΔP = 4 x 2(6).(2) / (8² – 3²)
ΔP = 4 x 24 / (64 – 9)
ΔP = 96 / 55
ΔP = 1.745
Therefore, the change in pressure is 1.745.
Calculating the Distance between Fluid Flow when the Velocity of Newtonian Fluid, the Change in Pressure, the Diameter of Pipe, the Separation Distance of Atoms and the Viscosity is Given.
L = (δ² – y²)ΔP / v x 2η
Where:
L = Distance between Fluid Flow
v = Velocity of Newtonian Fluid
ΔP = Change in Pressure
y = Diameter of Pipe
δ = Separation Distance of Atoms
η = Viscosity
Let’s solve an example;
Find the distance between fluid flow when the velocity of newtonian fluid is 10, the change in pressure is 4, the diameter of pipe is 1, the separation distance of atoms is 2 and the viscosity is 7.
This implies that;
v = Velocity of Newtonian Fluid = 10
ΔP = Change in Pressure = 4
y = Diameter of Pipe = 1
δ = Separation Distance of Atoms = 2
η = Viscosity = 7
L = (δ² – y²)ΔP / v x 2η
L = (2² – 1²)4 / 10 x 2(7)
L = (4 – 1)4 / 10 x 14
L = 12 / 140
L = 0.0857
Therefore, the distance between fluid flow is 0.0857 m.
Calculating the Diameter of Pipe when the Velocity of Newtonian Fluid, the Change in Pressure, the Distance between Fluid Flow, the Separation Distance of Atoms and the Viscosity is Given.
y = √δ² – (v x 2η.L / ΔP)
Where:
y = Diameter of Pipe
v = Velocity of Newtonian Fluid
ΔP = Change in Pressure
L = Distance between Fluid Flow
δ = Separation Distance of Atoms
η = Viscosity
Let’s solve an example;
Find the diameter of pipe when the velocity of newtonian fluid is 3, the change in pressure is 5, the distance between fluid flow is 7, the separation distance of atoms is 24 and the viscosity is 11.
This implies that;
v = Velocity of Newtonian Fluid = 3
ΔP = Change in Pressure = 5
L = Distance between Fluid Flow = 7
δ = Separation Distance of Atoms = 24
η = Viscosity = 11
y = √δ² – (v x 2η.L / ΔP)
y = √24² – (3 x 2(11).(7) / 5)
y = √576 – (462 / 5)
y = √576 – 92.4
y = √483.6
y = 21.99
Therefore, the diameter of pipe is 21.99 m.
Calculating the Separation Distance of Atoms when the Velocity of Newtonian Fluid, the Change in Pressure, the Distance between Fluid Flow, the Diameter of Pipe and the Viscosity is Given.
δ = √(v x 2η.L / ΔP) + y²
Where:
δ = Separation Distance of Atoms
v = Velocity of Newtonian Fluid
ΔP = Change in Pressure
L = Distance between Fluid Flow
y = Diameter of Pipe
η = Viscosity
Let’s solve an example;
Find the separation distance of atoms when the velocity of newtonian fluid is 12, the change in pressure is 10, the distance between fluid flow is 14, the diameter of pipe is 6 and the viscosity is 8.
v = Velocity of Newtonian Fluid = 12
ΔP = Change in Pressure = 10
L = Distance between Fluid Flow = 14
y = Diameter of Pipe = 6
η = Viscosity = 8
δ = √(v x 2η.L / ΔP) + y²
δ = √(12 x 2(8).(14) / 10) + 6²
δ = √(2688 / 10) + 36
δ = √268.8 + 36
δ = √304.8
δ = 17.45
Therefore, the separation distance atoms is 17.45.
Calculating the Viscosity when the Velocity of Newtonian Fluid, the Change in Pressure, the Distance between Fluid Flow, the Diameter of Pipe and the Separation Distance of Atoms is Given.
η = (δ² – y²)ΔP / v x 2η.L
Where:
η = Viscosity
v = Velocity of Newtonian Fluid
ΔP = Change in Pressure
L = Distance between Fluid Flow
y = Diameter of Pipe
δ = Separation Distance of Atoms
Let’s solve an example;
Find the viscosity when the velocity of newtonian fluid is 22, the change in pressure is 6, the distance between fluid flow is 10, the diameter of pipe is 3 and the separation distance of atoms is 4.
This implies that;
v = Velocity of Newtonian Fluid = 22
ΔP = Change in Pressure = 6
L = Distance between Fluid Flow = 10
y = Diameter of Pipe = 3
δ = Separation Distance of Atoms = 4
η = (δ² – y²)ΔP / v x 2.L
η = (4² – 3²)6 / 22 x 2.(10)
η = (16 – 9)6 / 440
η = (7)6 / 440
η = 42 / 440
η = 0.095
Therefore, the viscosity is 0.095.
Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the velocity of newtonian fluid.
To get the answer and workings of the velocity of newtonian fluid using the Nickzom Calculator – The Calculator Encyclopedia. First, you need to obtain the app.
You can get this app via any of these means:
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Once, you have obtained the calculator encyclopedia app, proceed to the Calculator Map, then click on Materials and Metallurgical under Engineering.
Now, Click on Transport Phenomena under Materials and Metallurgical
Now, Click on Velocity of Newtonian Fluid under Transport Phenomena
The screenshot below displays the page or activity to enter your values, to get the answer for the velocity of newtonian fluid according to the respective parameter which is the Change in Pressure (ΔP), Distance between Fluid Flow (L), Diameter of Pipe (y), Separation Distance of Atoms (δ) and Viscosity (η).
Now, enter the values appropriately and accordingly for the parameters as required by the Change in Pressure (ΔP) is 22, Distance between Fluid Flow (L) is 13, Diameter of Pipe (y) is 7, Separation Distance of Atoms (δ) is 11 and Viscosity (η) is 5.
Finally, Click on Calculate
As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the velocity of newtonian fluid and presents the formula, workings and steps too.