Viscosity is the measure of the shear stress vs the shear strain of the fluid (in one tensorial direction). It is a derived property of fluids and cannot be directly linked to fluid parameters.
There are typically two ways to measure fluid viscosity, test it in simple shear flow, and test it in elongation. Both tests will yield a fluids viscosity, although the results may be different.
Definition- the state of being thick, sticky, and semifluid in consistency, due to internal friction.
Let it be noted that 'viscosity' is only a term applied to newtonian fluids, because in fact some fluids do not have constant viscosity. This becomes very apparent when attempting to use the Navier Stokes equations on non-newtonian fluids. The 'viscous' closure term falls apart for these fluids. This is once again due to the fact that when you measure the 'viscosity' of a fluid, you are only measure one direction in the stress tensor, which for these fluids is not equal for all directions (seen in cases such as die swell). *See rheology for more information about this topic
VI is an indication of the rate of change of viscosity WRT temperature. Ideally, viscosity is supposed to be constant over a wide temperature range. VI of 100 is considered as the reference. Higher VI indicates lower excursion of viscosity WRT temperature & vice versa. gba
Viscosity is a measure of the oil’s resistance to flow or thickness, and is the single most important characteristic of hydraulic oil. The viscosity index number indicates the extent of thickness, or resistance to flow, with temperature changes.
Viscosity Index measures how well a substance flows (the thickness).
Mass
Viscosity is the measure of friction between adjacent layers of materials.
The more thick the substance is, the higher the viscosity.
honey has high viscosity lah, and water has low viscosity. anything that resists flow has high viscosity...lah. honey has high viscosity lah, and water has low viscosity. anything that resists flow has high viscosity...lah.
You first need to decide what you want to measure about it: its length, its volume, its viscosity, etc.
The Si unit for viscosity is Pa·s = kg/(s·m).
Viscosity is resistance to flow of oil Viscosity Index is a scale to measure viscosity
Viscosity is the measure of friction between adjacent layers of materials.
Viscosity doesn't happen. Viscosity is a measure of how easily a liquid flows.
viscosity
The viscosity index refers to the measure of the change of viscosity with a change in temperature.
Viscosity is the measure of the resistance of a liquid. This is often thought of as the thickness of a liquid.
Viscosity is a measure of a fluids resistance to flow. Is is a measure of how 'thick' a liquid is. For example, oil has a greater viscosity than water.
Intrinsic viscosity is s a measure of a solute's contribution to the viscosity of a solution. It is one of the primary measurements in polymer science.
Viscosity is the measure of a fluids resistance to flow. The higher the viscosity the more viscous (the more resistance it has to flow); honey is generally much more viscous than water.
Viscosity
Yes, the Ostwalds viscometer can be used to measure the viscosity of more viscous oil.
Viscosity is the resistance for flow.Viscosity is the internal properties of fluids.Gear oil normally has larger viscosity.Kinematic viscosity is usuarally used to measure the viscosity of industrial lubricants.Dynamical viscosity (CCS) is usually used to measure low temperature viscosity for auto lubricants.Solvent or fuels has a low viscosity.Industrial oils folllow ISO viscosity classification.Auto lubes oils follow SAE viscosity classification.High viscosity usually means better protection for wear.Low viscosity usually means low friction resistance.