Momentum Diffusivity Calculator

✖Dynamic Viscosity of a fluid is the measure of its resistance to flow when an external force is applied.ⓘ Dynamic Viscosity [μ_viscosity]			+10% -10%
✖Density of a material shows the denseness of that material in a specific given area. This is taken as mass per unit volume of a given object.ⓘ Density [ρ]			+10% -10%

✖Momentum Diffusivity most commonly refers to the diffusion, or spread of momentum between particles (atoms or molecules) of matter, often in the fluid state.ⓘ Momentum Diffusivity [𝜈]

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Formula

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Momentum Diffusivity

Formula

`"𝜈" = "μ"_{"viscosity"}/"ρ"`

Example

`"0.001023m²/s"="1.02Pa*s"/"997.3kg/m³"`

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Momentum Diffusivity Solution

STEP 0: Pre-Calculation Summary

Formula Used

Momentum Diffusivity = Dynamic Viscosity/Density
𝜈 = μ_viscosity/ρ
This formula uses 3 Variables

Variables Used

Momentum Diffusivity - (Measured in Square Meter Per Second) - Momentum Diffusivity most commonly refers to the diffusion, or spread of momentum between particles (atoms or molecules) of matter, often in the fluid state.
Dynamic Viscosity - (Measured in Pascal Second) - Dynamic Viscosity of a fluid is the measure of its resistance to flow when an external force is applied.
Density - (Measured in Kilogram per Cubic Meter) - Density of a material shows the denseness of that material in a specific given area. This is taken as mass per unit volume of a given object.

STEP 1: Convert Input(s) to Base Unit

Dynamic Viscosity: 1.02 Pascal Second --> 1.02 Pascal Second No Conversion Required
Density: 997.3 Kilogram per Cubic Meter --> 997.3 Kilogram per Cubic Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

𝜈 = μ_viscosity/ρ --> 1.02/997.3

Evaluating ... ...

𝜈 = 0.00102276145593101

STEP 3: Convert Result to Output's Unit

0.00102276145593101 Square Meter Per Second --> No Conversion Required

FINAL ANSWER

0.00102276145593101 ≈ 0.001023 Square Meter Per Second <-- Momentum Diffusivity

(Calculation completed in 00.004 seconds)

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Birla Institute of Technology & Science (BITS), Pilani

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< 9 Basic Formulas Calculators

Hydrostatic Force on Curved Submerged Surface

Go Hydrostatic Force = sqrt((Density*[g]*Volume)^2+(Density*[g]*Vertical Depth from Free Surface of Centre of Area*Area)^2)

Height of Capillary Rise or Fall

Go Height of Capillary Rise/Fall = 4*Surface Tension*cos(Angle of Contact between Liquid and Capillary Tube)/(Density*[g]*Diameter of Tube)

Viscosity using Viscometer

Go Dynamic Viscosity = ((Torque*Thickness of Fluid Layer)/(4*(pi^2)*(Radius of Inner Cylinder^3)*Revolutions per Second*Length of Cylinder))

Head Loss due to Friction

Go Head loss = Darcy Friction Factor*Fluid Velocity^(2)*Length of Pipe/(Pipe Diameter*2*[g])

Shear Force acting on Newtonian Fluid Layer

Go Shear Force = (Dynamic Viscosity*Contact Area*Velocity of Fluid)/(Distance Between Two Plates)

Hydrostatic Force on Horizontal Plane Submerged Surface

Go Hydrostatic Force = Density*[g]*Vertical Depth from Free Surface of Centre of Area*Area

Discharge Rate of Liquid from Orifice in Tank

Go Flowrate = Area of Orifice*(sqrt(2*[g]*Height of Tank))

Momentum Diffusivity

Go Momentum Diffusivity = Dynamic Viscosity/Density

Fanning Friction Factor using Darcy Friction Factor

Go Fanning Friction Factor = Darcy Friction Factor/4

Momentum Diffusivity Formula

Momentum Diffusivity = Dynamic Viscosity/Density
𝜈 = μ_viscosity/ρ

What is Momentum Diffusivity?

Momentum diffusivity most commonly refers to the diffusion, or spread of momentum between particles (atoms or molecules) of matter, often in the fluid state. This transport of momentum can occur in any direction of the fluid flow. Momentum diffusion can be attributed to either external pressure or shear stress or both.
It is also known as kinematic viscosity and defined as the ratio of the viscosity μ to the density of the fluid ρ. It is usually denoted by the Greek letter nu (ν).

What is the Physical Significance of Kinematic Viscosity?

Physical significance of kinematic viscosity of fluids: We can say it as a measure of diffusivity of momentum in that fluid. That means "how fast momentum can be transferred in that fluid between various layers and particles".

How to Calculate Momentum Diffusivity?

Momentum Diffusivity calculator uses Momentum Diffusivity = Dynamic Viscosity/Density to calculate the Momentum Diffusivity, Momentum diffusivity most commonly refers to the diffusion, or spread of momentum between particles (atoms or molecules) of matter, often in the fluid state. Momentum Diffusivity is denoted by 𝜈 symbol.

How to calculate Momentum Diffusivity using this online calculator? To use this online calculator for Momentum Diffusivity, enter Dynamic Viscosity (μ_viscosity) & Density (ρ) and hit the calculate button. Here is how the Momentum Diffusivity calculation can be explained with given input values -> 0.001023 = 1.02/997.3.

FAQ

What is Momentum Diffusivity?

Momentum diffusivity most commonly refers to the diffusion, or spread of momentum between particles (atoms or molecules) of matter, often in the fluid state and is represented as 𝜈 = μ_viscosity/ρ or Momentum Diffusivity = Dynamic Viscosity/Density. Dynamic Viscosity of a fluid is the measure of its resistance to flow when an external force is applied & Density of a material shows the denseness of that material in a specific given area. This is taken as mass per unit volume of a given object.

How to calculate Momentum Diffusivity?

Momentum diffusivity most commonly refers to the diffusion, or spread of momentum between particles (atoms or molecules) of matter, often in the fluid state is calculated using Momentum Diffusivity = Dynamic Viscosity/Density. To calculate Momentum Diffusivity, you need Dynamic Viscosity (μ_viscosity) & Density (ρ). With our tool, you need to enter the respective value for Dynamic Viscosity & Density 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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