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Consequently, if a liquid has dynamic viscosity of n centiPoise, and its density is not too different from that of water, then its kinematic viscosity is around n centiStokes. For gas, the dynamic viscosity is usually in the range of 10 to 20 microPascal-seconds, or 0.01 to 0.02 centiPoise. The density is usually on the order of 0.5 to 5 kg/m^3.
Saybolt universal viscosity (SUV), and the related Saybolt FUROL viscosity (SFV), are specific standardised tests producing measures of kinematic viscosity. FUROL is an acronym for fuel and road oil. [1] Saybolt universal viscosity is specified by the ASTM D2161. Both tests are considered obsolete to other measures of kinematic viscosity, but ...
The proportionality factor is the dynamic viscosity of the fluid, often simply referred to as the viscosity. It is denoted by the Greek letter mu ( μ ). The dynamic viscosity has the dimensions ( m a s s / l e n g t h ) / t i m e {\displaystyle \mathrm {(mass/length)/time} } , therefore resulting in the SI units and the derived units :
The dilute gas viscosity contribution to the total viscosity of a fluid will only be important when predicting the viscosity of vapors at low pressures or the viscosity of dense fluids at high temperatures. The viscosity model for dilute gas, that is shown above, is widely used throughout the industry and applied science communities.
This page was last edited on 9 September 2023, at 04:52 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
The Mark–Houwink equation, also known as the Mark–Houwink–Sakurada equation or the Kuhn–Mark–Houwink–Sakurada equation or the Landau–Kuhn–Mark–Houwink–Sakurada equation or the Mark-Chrystian equation gives a relation between intrinsic viscosity [] and molecular weight: [1] [2]
Meaning at a critical strain, the flow would cause particles to create a less ordered structure resulting in an increase in viscosity. Complex viscosity is a measure of the total resistance to flow as a function of angular frequency. [9] For peanut butter, it was found that the initial complex viscosity as angular frequency increased was very high.
Volume viscosity was introduced in 1879 by Sir Horace Lamb in his famous work Hydrodynamics. [5] Although relatively obscure in the scientific literature at large, volume viscosity is discussed in depth in many important works on fluid mechanics, [ 1 ] [ 6 ] [ 7 ] fluid acoustics, [ 8 ] [ 9 ] [ 10 ] [ 2 ] theory of liquids, [ 11 ] [ 12 ...