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Topic: Kinematic viscosity

Related Topics

Dynamic viscosity

Thixotropy

Thermodynamic properties

Specific heat

Shear stress

Viscoelasticity

Thermodynamic entropy

Temperature

Thermodynamics

Thermal conductivity

Enthalpy

Water

Density

Wilhelm Beer

	Lubrication Theory and Practice (Site not responding. Last check: 2007-10-22)
		Kinematic viscosity of a fluid equals its dynamic viscosity divided by its density, both measured at the same temperature and in consistent units.
		Kinematic viscosity in square millimeters per second can be converted to dynamic viscosity in pascal-seconds by multiplying by the density in grams per cubic centimeter and dividing the result by 1000.
		The calculation is based on kinematic viscosity measurements at 40 and 100°C. For oils of similar kinematic viscosity, the higher the viscosity index, the smaller the effect of temperature.
	www.lubrizol.com /LubeTheory/theory.asp (2085 words)

	Kinematic Viscosity of Cryogens
		The time required for the levels in both reservoirs to reach equality is determined in large part by the kinematic viscosity of the liquid and the radius of the capillary tube.
		Absolute kinematic viscosity measurements are to be extracted from the acquired liquid level difference versus time data for each liquid and each capillary.
		Kinematic viscosity measurement precision and accuracy for liquid oxygen at T = 77.4 K. Comparision with NIST data is shown.
	www.eng.fsu.edu /cryolab/kinematicvisc.htm (469 words)

	viscosity measurement instrument.
		The technique of determining the viscosity of Newtonian fluids by measuring the pressure drop across a capillary tube during isothermal, laminar flow is well known.
		The capillary-tube viscometer also gives kinematic viscosity in stokes from measurements of the pressure gradient and of the volumetric flow rate in a cylindrical tube of precisely known dimensions as stated by the Hagen-Poiseuille Law for the flow of fluids through a capillary.
		For measuring knematic viscosity, a sample liquid of fixed volume is charged to the lower receiving vessel and the viscometer is placed in a thermostatic bath.
	ph-scale.info /viscosity.htm (979 words)

	NTT - TECHNICAL BULLETIN: VISCOSITY OF INSULATING OILS
		The viscosity of a fluid is a measure of its resistance to flow.
		Kinematic viscosities are usually determined using glass capillary viscometers in which a fixed volume of the fluid is allowed to flow under gravity through a calibrated capillary tube.
		The viscosity of an insulating fluid is usually determined as part of the acceptance standard and as such it is not usually monitored during the use of a unit unless problems arise that might be replated either directly of indirectly to the viscosity or its rate of change with temperature.
	www.nttworldwide.com /tech2203.htm (766 words)

	Viscosity primer
		Viscosity is a measure of the "thickness" of the liquid.
		The viscosity of a liquid can change appreciably with a change in the temperature of the liquid, but seldom changes when the pressure is altered We all know that hot oil is "thinner" than cold oil, so we must always know the temperature of the fluid when the viscosity is to be measured.
		The common units for expressing kinematic viscosity is the "Centistoke" (1/100 of a stoke).
	www.mcnallyinstitute.com /07-html/7-8.html (907 words)

	Viscosity Tubes
		Viscosity is a measurement of internal friction, or resistance, to flow by external forces.
		Kinematic viscosity is measured by the time required for a given volume of liquid to flow through a capillary or restriction.
		Viscosity is determined by either measuring the time an air bubble takes to pass between two specifically spaced marks on viscosity tubes, or by comparison to the bubble rate rise of calibrated viscosity standards.
	www.cargille.com /vistube.shtml (1434 words)

	Viscosity - Wikipedia, the free encyclopedia
		Viscosity is a measure of the resistance of a fluid to deform under shear stress.
		Viscosity describes a fluid's internal resistance to flow and may be thought of as a measure of fluid friction.
		Viscosity may be an appropriate characteristic for solids in a plastic regime.
	en.wikipedia.org /wiki/Viscosity (2383 words)

	Cole-Parmer Technical Library
		Kinematic viscosity is defined as the dynamic viscosity divided by the density of the fluid.
		However, kinematic viscosity is the preferred unit when the shear stress and shear rate of the fluid is influenced by the density.
		Kinematic viscosity is given in units of centistokes while the dynamic viscosity is given in centipoise and the conversion from dynamic to kinematic is given by dividing the dynamic viscosity by the fluid density in g/cm
	www.coleparmer.com /techinfo/techinfo.asp?htmlfile=HVFlow_WP.htm (2270 words)

	Viscosity- Friction between various fluid layers
		Since the viscosities of Newtonian liquids are independent of dimensions of viscometers used, it is possible to convert efflux times to kinematic viscosities by conversion charts or by formula suggested by the equipment manufacturers.
		The viscosity determination should be conducted in a room free from drafts and rapid changes in temperature to attain the highest degree of accuracy.
		Such a measurement leads to a single (averaged) viscosity for a complicated deformation regime and this is difficult to interpret consistently for rheologically complex fluids.
	telemetry-viscosity.info /viscosity.htm (1728 words)

	Universal Flow Viscosity Curve
		The viscosity of a fluid causes a loss in pressure as it flows, so that an increase in viscosity requires an increased amount of energy to pump fluid at the same rate.
		As temperature increases, the viscosity of a liquid decreases and the viscosity of a gas increases.
		This is a semi log plot of the sensitivity of the meter as a function of the ratio of the output frequency to the kinematic viscosity.
	www.ftimeters.com /pages/uvc.html (2420 words)

	Viscosity
		Viscosity is the measure of the internal friction in a liquid or the resistance to a flow.
		The common metric unit of absolute viscosity is the poise, which is defined as the force in dynes required to move a surface one square centimeter in area past a parallel surface at a speed of one centimeter per second, with the surfaces separated by a fluid film one centimeter thick.
		To determine kinematic viscosity, a fixed volume of the test fluid is allowed to flow through a calibrated capillary tube (viscometer) that is held at a closely controlled temperature.
	www.synlube.com /viscosit.htm (3343 words)

	Environmental Protection Agency > Basic Concepts in Environmental Sciences > Module 4 > Viscosity
		The viscosity of a liquid is a measure of that fluid's resistance to flow when acted upon by an external force such as a pressure differential or gravity.
		The kinematic viscosity is simply the absolute viscosity divided by the density of the liquid as shown in Equation 2.
		Since viscosity and surface tension are closely related, surface tension determines the size of liquid droplets in the same manner as viscosity.
	www.epa.gov /eogapti1/module4/viscos4/viscos4.htm (1011 words)

	[No title]
		Viscosity is ordinarily expressed in terms of the time required for a standard quantity of the fluid at a certain temperature to flow through a standard orifice.
		Laboratory measurements of viscosity sometimes use the force of gravity to produce flow through a capillary tube (viscometer) at a controlled temperature or a falling ball in a glass tube.
		The unit of kinematic viscosity is the stoke, expressed in square centimeters per second, and combines the effects of absolute viscosity and density.
	www.lycos.com /info/viscosity--kinematic-viscosity.html (495 words)

	Kinematic Viscosity
		The absolute viscosity of an oil is defined as the resistance to flow and shear under the forces of internal friction.
		Kinematic viscosity on the other hand is a measure of an oils resistance to flow and shear under the forces of gravity.
		Kinematic viscosity is usually measured using a Capillary Tube Viscometer (ASTM D445) and is the method most commonly used by oil analysis labs to determine an oils viscosity.
	www.lubetips.com /BackIssues/2001-6-26.htm (452 words)

	Viscosity
		Kinematic viscosity is a measure of the resistive flow of a fluid under the influence of gravity.
		The viscosity of water at 20 °C is 1.0020 millipascal seconds (which is conveniently close to one by coincidence alone).
		inversely proportional to the viscosity of the fluid, and
	hypertextbook.com /physics/matter/viscosity (1639 words)

	XpressLube.com: Car Care: Featured Articles (Site not responding. Last check: 2007-10-22)
		In fact, the viscosity of an oil is not constant at all - it depends upon the temperature, the pressure, and the actual strain rate or shear stress in the flowing oil, in the region of interest.
		Oil viscosity is commonly defined and tested using four different methods, yielding four separate measures of viscosity: kinematic, high-temperature high-shear-rate, cold cranking simulator viscosity, and cold pumpability.
		Kinematic viscosity, which measures the viscosity of an oil as it flows under the force of gravity, has been the most common measurement of oil viscosity for many years.
	www.texacoxpresslube.com /carcare/article_viscosity.html (1288 words)

	Environmental Protection Agency > Basic Concepts in Environmental Sciences > Module 2 > Viscosity
		As this equation indicates, the viscosity of a gas increases as the temperature increases.
		The viscosity of air and other gases at various temperatures and at a pressure of one atmosphere may be found in engineering tables.
		The absolute viscosity and density of a gas are occasionally combined into a single parameter since both of these parameters are found in many common equations describing gas flow characteristics.
	www.epa.gov /eogapti1/module2/viscosity/viscosity.htm (369 words)

	BUNKERWORLD -- Viscosity: Definition -- Bunkers, Marine Fuel, Bunkering, Bunker Prices, BunkerNews, Suppliers, Brokers, ...
		Knowledge of viscosity is necessary for the estimation of the required temperatures for storage, pumping and injection.
		The viscosity of a fuel is its resistance to shear or flow, and is a measure of the fuel's adhesive/cohesive or frictional properties.
		Dynamic viscosity is also termed "absolute viscosity" and is the tangential force per unit area required to move one horizontal plane with respect to the other at unit velocity when maintained a unit distance apart by the fluid.
	www.bunkerworld.com /technical/tech_viscosity.htm (397 words)

	Viscosity
		The Power Plant Laboratory Viscometer reports viscosity in cSt at 40, 50 and 100Â°C. Viscosity is usually expressed as kinematic viscosity, which is measured in Stokes.
		Kinematic viscosity is the quotient of the dynamic or absolute viscosity divided by the density, with both expressed at the same temperature.
		Dynamic viscosity is a property of the internal resistance of a fluid that opposes the motion of adjacent layers.
	www.kittiwake.com /Default.aspx/Page/KB/KB/26 (334 words)

	Viscosity
		The dynamic viscosity is the viscosity that relates shear stress τ; and shear rate du/dz in a fluid, i.e.
		Dynamic viscosities are usually measured under high shear conditions, for example, the cylinder viscometer in which the viscous shear torque is measured between two cylinders.
		The kinematic viscosity is the quotient of the dynamic viscosity η and the fluid density ρ, ν=η/ρ;.
	www.tribology-abc.com /abc/viscosity.htm (201 words)

	Biodiesel Viscosity... (Site not responding. Last check: 2007-10-22)
		The viscosity of a fluid can be expressed as a "dynamic viscosity" and a "kinematic viscosity".
		Kinematic viscosity takes into account the fluid density and is measured in units called "centistokes".
		In general the viscosity of a liquid will be reduced as the temperature rises.
	www.brevardbiodiesel.org /viscosity.html (168 words)

	Viscosity
		Viscosity is a measure of that internal friction.
		The term used to described this is "Kinematic Viscosity" and it is expressed in units indicating flow volume over a period of time.
		The viscosity of a fluid must be adequate to separate moving parts at the operating temperature of the equipment.
	www.weareoil.com /Viscosity.htm (924 words)

	Dynamic, Absolute and Kinematic Viscosity
		The viscosity of a fluid is a very important property in the analysis of liquid behavior and fluid motion near a solid boundary.
		The viscosity of a fluid is its resistance to shear or flow and is a measure of the fluids adhesive/cohesive or frictional properties.
		Viscosity in Engler degrees is the ratio of the time of flow of 200 cubic centimetres of the fluid whose viscosity is being measured to the time of flow of 200 cubic centimeters of water at the same temperature (usually 20
	www.piping-toolbox.com /dynamic-absolute-kinematic-viscosity-d_412.html (1058 words)

	S-flow®-400 kinematic viscosity measuring procedure (Site not responding. Last check: 2007-10-22)
		The kinematic viscosity of a fluid equals its dynamic (or absolute) viscosity divided by its density.
		It is determined by measuring the time (in sec) required for a specified volume of liquid to flow by gravity, at a specified temperature, through a standard capillary tube (i.e.
		Kinematic viscosity is widely regarded as the most important parameter for oils and lubricants.
	www.omnitek.nl /viscosity/400/procedure.htm (250 words)

	Dynamic, Absolute and Kinematic Viscosity
		The viscosity of a fluid is an important property in the analysis of liquid behavior and fluid motion near solid boundaries.
		The viscosity is the fluid resistance to shear or flow and is a measure of the adhesive/cohesive or frictional fluid property.
		The viscosity of a fluid is highly temperature dependent and for either dynamic or kinematic viscosity to be meaningful, the reference temperature must be quoted.
	engineeringtoolbox.com /dynamic-absolute-kinematic-viscosity-d_412.html (1406 words)

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