![]() ![]() This effect can be observed for the n-alkanes and 1-chloroalkanes tabulated below. Substances composed of longer molecules tend to have larger viscosities due to the increased contact of molecules across layers of flow. One of the key predictions of the theory is the following relationship between viscosity μ For this reason, measured viscosities of the noble gases serve as important tests of the kinetic-molecular theory of transport processes in gases (see Chapman–Enskog theory). The simple structure of noble gas molecules makes them amenable to accurate theoretical treatment. By contrast, pressure is omitted since gaseous viscosity depends only weakly on it. The temperatures corresponding to each data point are stated explicitly. Where data points are unavailable for 25 ☌ or 1 atmosphere, values are given at a nearby temperature/pressure. Here "standard conditions" refers to temperatures of 25 ☌ and pressures of 1 atmosphere. Viscosities at or near standard conditions Consequently, its kinematic viscosity is around 2 to 40 centiStokes. The density is usually on the order of 0.5 to 5 kg/m^3. 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.įor 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 1000 kg/m^3, i.e. In engineering, the unit is usually Stoke or centiStoke, with 1 Stoke = 0.0001 m^2/s, and 1 centiStoke = 0.01 Stoke.įor liquid, the dynamic viscosity is usually in the range of 0.001 to 1 Pascal-second, or 1 to 1000 centiPoise. In engineering, the unit is usually Poise or centiPoise, with 1 Poise = 0.1 Pascal-second, and 1 centiPoise = 0.01 Poise.įor kinematic viscosity, the SI unit is m^2/s. This page lists only dynamic viscosity.įor dynamic viscosity, the SI unit is Pascal-second. Kinematic viscosity is dynamic viscosity divided by fluid density. The values listed in this article are representative estimates only, as they do not account for measurement uncertainties, variability in material definitions, or non-Newtonian behavior. Of all fluids, gases have the lowest viscosities, and thick liquids have the highest. Viscosity is measured using a viscometer. For instance, honey hasĪ much higher viscosity than water. It corresponds roughly to the intuitive notion of a fluid's 'thickness'. Temperature Online calculator, figures and tables showing heat of vaporization of water, at temperatures from 0 - 370 ☌ (32 - 700 ☏) - SI and Imperial units.Dynamic viscosity is a material property which describes the resistance of a fluid to shearing flows. Temperature Figures and tables showing the enthalpy and entropy of liquid water as function of temperature - SI and Imperial Units. Water - Enthalpy (H) and Entropy (S) vs.Water - Density, Specific Weight and Thermal Expansion Coefficients Definitions, online calculator and figures and tables with water properties like density, specific weight and thermal expansion coefficient of liquid water at temperatures ranging 0 to 360☌ (32 to 680☏).Temperature and Pressure Absolute viscosity for water in centipoises for temperatures between 32 - 200 oF. Water - Absolute (Dynamic) Viscosity vs.Kinematic Vicosity is a fluid's resistance to flow and can be valued as dynamic (absolute) or kinematic. Seawater - Attenuation of Sound Attenuation of sound in seawater vs.Salinity of Water Salinity - salt content - of fresh, brackish and sea water.Temperature Solubility of oxygen in equilibration with air in fresh water and seawater (salt water) - pressures ranging 1 - 4 bar abs. Oxygen - Solubility in Fresh and Sea Water vs.Metals in Seawater - Galvanic Series Galvanic series of metals in seawater.Viscosities Viscosities of products and chemical species at varying conditions.Material Properties Material properties of gases, fluids and solids - densities, specific heats, viscosities and more.Densities Densities of solids, liquids and gases.Temperature and Salinityįreezing Point of Seawater vs. Temperature and SalinityĮlectrical Conductivity of Seawater vs. Salinity is normally quoted in units ‰ (parts per thousand):įor full table - rotate the screen! Temperatureĭensity of Seawater vs. Density calculated for salinity S = 35000 mg/l. Seawater temperature, saturation pressure, specific volume, specific heat, electrical conductivity and absolute viscosity. ![]()
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