Dynamic viscosity (dyn.visc.)
Synonym |
Coefficient of internal friction | ||
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Abbreviation |
Dyn.visc. | ||
Definition in words |
Shear stress in the x,z plane in a fluid divided by velocity gradient perpendicular to the plane of shear (Reference 1) Note 1: Shear stress is the “force acting tangentially to a surface divided by the area of the surface” (F/A) Note 2: Velocity gradient is change of velocity divided by elapsed time (ΔV/ΔT) |
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Definition by equation |
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Systematic terms
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Dynamic viscosity of component B in system 1 | ||
Result type |
Rational scale |
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Numerical values from 0-∞ |
Unit |
µPa s, mPa s, Pa s, etc. | ||
Special rule(s) in the NPU syntax |
The Celsius Temperature of the measurement procedure should be stated. | ||
Non-recommended term |
Viscosity | ||
Reference |
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Laboratory field |
Examples |
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Clinical Chemistry |
Example 1
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Generic abbreviated form | NPU28466 B—Blood; dyn.visc.(37 °C) = ? mPa s | |
Full form with a result | NPU28466 Blood—Blood; dynamic viscosity(37 °C) = 3 milliPascal second | |
Abbreviated form with a result | NPU28466 B—Blood; dyn.visc.(37 °C) = 3 mPa s | |
Written expression | The dynamic viscosity of Mrs. Smith’s blood is [3] mPa s. The measurement is performed at 37 °C. | |
Equation | ||
Example 2 | ||
Generic abbreviated form | NPU27754 P—Plasma; dyn.visc.(37 °C) = ? mPa s | |
Full form with a result | NPU27754 Plasma—Plasma; dynamic viscosity(37 °C) = 1.28 milliPascal second | |
Abbreviated form with a result | NPU27754 P—Plasma; dyn.visc.(37 °C) = 1.28 mPa s | |
Written expression | The dynamic viscosity of Mr. Smith’s plasma is [1.28] mPa s. The measurement is performed at 37 °C. | |
Equation | ||
Reference |
NPU database, https://www.ifcc.org/ifcc-scientific-division/sd-committees/c-npu/npusearch/ and http://www.labterm.dk/default.aspx |
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Kind-of-property
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Nominal kind-of-property
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Kind-of-quantity
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Unitary kind-of-quantity
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Rational unitary kind-of-quantity
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Dynamic viscosity
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Reference |
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Date | Term | Note |
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2009-11-26 | Dynamic viscosity | Term established |
NPU term identifier |
QU100352 |