Engler viscosity - definitie. Wat is Engler viscosity
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Wat (wie) is Engler viscosity - definitie

MEASURE OF HOW VISCOSITY OF A LIQUID CHANGES WITH TEMPERATURE
Viscosity Index; Viscosity index improver; Viscosity modifiers; Viscosity modifier

Hansruedi Engler         
SWISS CANOEIST
Hansrudi Engler; Hansrüdi Engler
Hansruedi Engler (born 24 March 1928) is a Swiss sprint canoeist who competed in the early 1950s. He competed in the K-1 1000 m event at the 1952 Summer Olympics in Helsinki, but was eliminated in the heats.
Volume viscosity         
Bulk viscosity; Bulk Viscosity; Second Viscosity Coefficient; Second viscosity; Second coefficient of viscosity
Volume viscosity (also called bulk viscosity, or dilatational viscosity) is a material property relevant for characterizing fluid flow. Common symbols are \zeta, \mu', \mu_\mathrm{b}, \kappa or \xi.
Extensional viscosity         
POLYMER SOLUTION PARAMETER
Elongational viscosity
Extensional viscosity (also known as elongational viscosity) is a viscosity coefficient when applied stress is extensional stress.Barnes, H.

Wikipedia

Viscosity index

The viscosity index (VI) is an arbitrary, unit-less measure of a fluid's change in viscosity relative to temperature change. It is mostly used to characterize the viscosity-temperature behavior of lubricating oils. The lower the VI, the more the viscosity is affected by changes in temperature. The higher the VI, the more stable the viscosity remains over temperature fluctuations. The VI was originally measured on a scale from 0 to 100; however, advancements in lubrication science have led to the development of oils with much higher VIs.

The viscosity of a lubricant is closely related to its ability to reduce friction in solid body contacts. Generally, the least viscous lubricant which still forces the two moving surfaces apart to achieve "fluid bearing" conditions is desired. If the lubricant is too viscous, it will require a large amount of energy to move (as in honey); if it is too thin, the surfaces will come in contact and friction will increase.