Interactive Dynamic Viscosity Conversion Table - convert selected unit to all other units of dynamic viscosity.Online Dynamic Viscosity Converter - convert between various units of dynamic viscosity, such as Ppascal second, kilogram-force second per square meter, pound-force second per square inch, poise, and so on.Which is only slightly simpler than the equivalent equation in terms of viscosity: For two components (a and b), the fluidity of a solution of a and b is: The concept of fluidity can be used to determine the viscosity of an ideal solution. Fluidity is seldom used in engineering practice. The reciprocal of viscosity is fluidity, usually symbolised by φ (=1/μ) or F (=1/η), depending on the convention used, measured in reciprocal poise ( cm The dynamic viscosities of liquids are typically several orders of magnitude higher than dynamic viscosities of gases.Ī Data from CRC Handbook of Chemistry and Physics, 73rd edition, 1992-1993.įluids with variable compositions, such as honey, can have a wide range of viscosities.Ī more complete table can be found here Can solids have a viscosity?
Viscosity is independent of pressure (except at very high pressure) and.This leads to an additional contribution to the shear stress though the exact mechanics of this are still controversial. In liquids, the additional forces between molecules become important. Viscosity is independent of pressure and *Viscosity increases as temperature increases.The kinetic theory of gases allows accurate prediction of the behaviour of gaseous viscosity, in particular that, within the regime where the theory is applicable: Viscosity in gases arises principally from the molecular diffusion that transports momentum between layers of flow.
This ratio is characterised by the kinematic viscosity, defined as follows: In many situations, we are concerned with the ratio of the viscous force to the inertial force, the latter characterised by the fluid density ρ. Thus, water is "thin", having a low viscosity, while vegetable oil is "thick" having a high viscosity. Viscosity describes a fluid's internal resistance to flow and may be thought of as a measure of fluid friction. It is commonly perceived as "thickness", or resistance to pouring.
0 kommentar(er)
