How do you calculate kinematic viscosity?

How do you calculate kinematic viscosity?

Kinematic viscosity can be obtained by dividing the dynamic viscosity of a fluid by its density. The Stokes(St) is the cgs physical unit for kinematic viscosity, named after George Gabriel Stokes, where 1 St = 10-4 m2/s. It is also expressed in terms of centistokes (cSt or ctsk).

What is kinematics viscosity of fluid?

Kinematic viscosity is a measure of a fluid’s internal resistance to flow under gravitational forces. It is determined by measuring the time in seconds, required for a fixed volume of fluid to flow a known distance by gravity through a capillary within a calibrated viscometer at a closely controlled temperature.

What is kinematic viscosity equal to?

The SI unit for kinematic viscosity is square meters per second (m2/s). However, due to the viscosity values of most common fluids, square centimeters per second (cm2/s) is used more often. Note that 1 cm2/s is equivalent to 100 cSt.

How do you calculate kinematic and dynamic viscosity?

A basic difference between the dynamic and kinematic viscosity measurements is density. Density actually provides a way to convert between a kinematic and a dynamic viscosity measurement. The formula for the conversion is: Kinematic (cSt) x Density = Dynamic (cP)

What is the formula for calculating viscosity?

There are several formulas and equations to calculate viscosity, the most common of which is Viscosity = (2 x (ball density – liquid density) x g x a^2) ÷ (9 x v), where g = acceleration due to gravity = 9.8 m/s^2, a = radius of ball bearing, and v = velocity of ball bearing through liquid.

Where is kinematic viscosity used?

5 Kinematic Viscosity (ASTM D445) Kinematic viscosity of bio-oil is typically measured at 40°C to determine the fluidity property. The viscosity value of bio-oil is used to determine the stability of liquid fuel during storage.

What are units of viscosity?

The unit of viscosity is newton-second per square metre, which is usually expressed as pascal-second in SI units.

What is the formula for dynamic viscosity?

The units of dynamic viscosity are: Force / area x time The Pascal unit (Pa) is used to describe pressure or stress = force per area This unit can be combined with time (sec) to define dynamic viscosity. Pa•s for use in calculations.