Kinematic Viscosity


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kinematic viscosity

[¦kin·ə¦mad·ik vi′skäs·əd·ē]
(fluid mechanics)
The absolute viscosity of a fluid divided by its density. Also known as coefficient of kinematic viscosity.

Kinematic Viscosity

 

(also kinematic modulus of viscosity), the ratio of the conventional modulus of viscosity η (also called the dynamic coefficient) to the density of the substance ρ; it is designated by ν. In the International System of Units the unit of kinematic viscosity is m2/sec. A fractional unit of kinematic viscosity, cm2/sec, is called the stokes: 1 m2/sec = 104 stokes.

References in periodicals archive ?
For batch transesterification of tobacco seed oil with methanol, the influence of four processing factors on the methyl ester quantity, kinematic viscosity, density, freezing point and flash point were simultaneously analyzed employing the multi response Taguchi method.
Moreover, after every week, changes in acid value and kinematic viscosity of diesel and biodiesel were noted before replacement with fresh fuels.
ASTM D-6751 standard requires 1.9 to 6 [mm.sup.2]/s as the limits of Kinematic viscosity at 40[degrees]C.
This is thought to be mainly due to the difference in kinematic viscosity. In Fluorinert B having low viscosity, it was considered that Silicone Oil A exhibited good performance because the fraction of scattering when colliding with the heat sink was large.
Babassu biodiesel ANP 45/2014 Specific gravity at 20 854 [+ or -] 9.2 850-900 [degrees]C (Kg [m.sup.-3]) Specific gravity at 40 832 [+ or -] 8.0 Not [degrees]C (Kg [m.sup.-3]) specified Kinematic viscosity at 20 6.75 [+ or -] 0.22 Not [degrees]C ([mm.sup.2] specified [s.sup.-1]) Kinematic viscosity at 40 3.04 [+ or -] 0.12 3.0-6.0 [degrees]C ([mm.sup.2] [s.sup.-1]) Acid number (mgKOH/g) 0.013 [+ or -] 0.002 0.50 Iodine number ([gl.sub.2]/100g) 48.6 [+ or -] 1.1 Registered Free glycerin (%) 0.024 [+ or -] 0.002 0.25 Table 2.
Kinematic Viscosity at 40AdegC (cSt)###D-445###4.11###4.42###4.18###4.23###4.16###4.17###4.14###4.11###1.9-6.0
The use of ultra-low sulfur fuels requires the use of support devices to maintain the kinematic viscosity in the operating range of the high-pressure pump group to avoid damaging and temperature-shocking equipment and system.
Effects of time on the viscosity of standard milk formula, thickened and incubated at 37[degrees]C Time V (cSt) V (cSt) V (cSt) (minutes) 2% 3% 5% 0 4.17 [+ or -] 7.37 [+ or -] 0.81 18.31 [+ or -] 3.69 0.99 20 5.13 [+ or -] 7.73 [+ or -] 1.24 23.82 [+ or -] 3.87 1.19 40 5.26 [+ or -] 8.15 [+ or -] 0.57 25.98 [+ or -] 2.62 1.21 60 5.97 [+ or -] 8.73 [+ or -] 0.20 25.80 [+ or -] 2.69 0.63 p-value 0.277 0.263 0.065 V= Viscosity; cSt= CentiStoke (unit of kinematic viscosity) p-value 2% vs 3%--0.072 p- value 2% vs 5%--0.000 p- value 3% vs 5%--0.000 Table 2.
The dependent variable, coefficient of friction ([mu]), and independent variables, density @ 15[degrees]C ([rho]), kinematic viscosity @ 40[degrees]C ([v.sub.40]), and TAN, for the selected lubricants are given in Table 8.
Unfortunately, increase of the rotation speed above a certain value does not bring significant improvements of the LIBS signal as the minimum achievable film thickness depends on kinematic viscosity of liquid, which is a measure of resistance to flow and shear.
The kinematic viscosity is important for proper transport of fuel from tank to engine.
It is offered in two versions--the MicroLab 30 provides key properties for oil chemistry, kinematic viscosity and concentration of 10 wear and contamination metals.