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1. Viscosity: Viscosity is a measure of the resistance of a fluid to deform under either shear stress or extensional stress. It is commonly perceived as "thickness," or resistance to flow. Viscosity describes a fluid's internal resistance to flow and may ... [100%] 2023-02-03
2. Viscosity: The viscosity of a fluid is a measure of its resistance to deformation at a given rate. For liquids, it corresponds to the informal concept of "thickness": for example, syrup has a higher viscosity than water. (Physics) [100%] 2023-09-09 [Viscosity] [Aerodynamics]...
3. Viscosity: Viscosity is a liquid's (or more generally a fluid's) resistance to flow. In more every day terms, it may be though of as how thick a liquid is. [100%] 2023-02-21 [Chemical Properties] [Chemistry]...
4. Viscosity: The property of fluids and gases to resist flow, caused by intermolecular forces. In a "streamline flow" the fluid can be thought of as containing parallel layers which move at different rates, a simple shearing motion. (Mathematics) [100%] 2023-01-14
5. Viscosity: The viscosity of a fluid is a measure of its resistance to deformation at a given rate. For liquids, it corresponds to the informal concept of "thickness": for example, syrup has a higher viscosity than water. (Resistance of a fluid to shear deformation) [100%] 2021-12-23 [Viscosity] [Articles containing video clips]...
6. Viscosity solutions: A notion of solutions of fully non-linear second-order partial differential equations of the form $ F( x, u( x), Du( x), D ^ {2} u( x)) = 0 $, where $ u $ is a real-valued function defined on a set $ \Omega \subset ... (Mathematics) [70%] 2023-10-24
7. Viscosity (programming): In object oriented programming, viscosity refers to the ease at which a developer can add design-preserving code to a system. If it is easier to add a hack than it is to add code that fits into the program ... (Programming) [70%] 2023-09-18 [Object-oriented programming]
8. Viscosity solution: In mathematics, the viscosity solution concept was introduced in the early 1980s by Pierre-Louis Lions and Michael G. Crandall as a generalization of the classical concept of what is meant by a 'solution' to a partial differential equation (PDE ... [70%] 2022-12-13 [Partial differential equations] [Dynamic programming]...
9. 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. (Physics) [70%] 2022-11-20 [Tribology]
10. Viscosity (imaging software): Viscosity is also an out-of-print image and animation editing utility published by Sonic Foundry. It can work with PNG, GIF, JPG/JPEG, BMP, AVI and its native VSC format. (Software) [57%] 2022-08-15 [Graphics software]
11. Viscosity models for mixtures: The shear viscosity (or viscosity, in short) of a fluid is a material property that describes the friction between internal neighboring fluid surfaces (or sheets) flowing with different fluid velocities. This friction is the effect of (linear) momentum exchange caused ... (Physics) [50%] 2022-11-15 [Viscosity]
12. Viscosity models for mixtures: The shear viscosity (or viscosity, in short) of a fluid is a material property that describes the friction between internal neighboring fluid surfaces (or sheets) flowing with different fluid velocities. This friction is the effect of (linear) momentum exchange caused ... [50%] 2021-12-24 [Viscosity]
13. Reduced viscosity: In fluid dynamics, the reduced viscosity of a polymer is the ratio of the relative viscosity increment ( η i {\displaystyle \eta _{i}} ) to the mass concentration of the species of interest. It has units of volume per unit mass. [70%] 2022-12-30 [Viscosity]
14. Extensional viscosity: Extensional viscosity (also known as elongational viscosity) is a viscosity coefficient when applied stress is extensional stress. It is often used for characterizing polymer solutions. (Polymer solution parameter) [70%] 2022-11-27 [Fluid dynamics] [Viscosity]...
15. Reduced viscosity: In fluid dynamics, the reduced viscosity of a polymer is the ratio of the relative viscosity increment (\displaystyle{ \eta_i }[/math]) to the mass concentration of the species of interest. It has units of volume per unit mass. (Physics) [70%] 2023-07-17 [Viscosity]
16. Intrinsic viscosity: Intrinsic viscosity \displaystyle{ \left[ \eta \right] }[/math] is a measure of a solute's contribution to the viscosity \displaystyle{ \eta }[/math] of a solution. It should not be confused with inherent viscosity, which is the ratio of the natural logarithm ... (Physics) [70%] 2023-12-04 [Fluid dynamics] [Viscosity]...
17. Volume viscosity: Volume viscosity (also called bulk viscosity, or dilatational viscosity) is a material property relevant for characterizing fluid flow. Common symbols are \displaystyle{ \zeta, \mu', \mu_\mathrm{b}, \kappa }[/math] or \displaystyle{ \xi }[/math]. (Chemistry) [70%] 2022-08-26 [Colloidal chemistry] [Fluid dynamics]...
18. Apparent viscosity: In fluid mechanics, apparent viscosity (sometimes denoted η) is the shear stress applied to a fluid divided by the shear rate: For a Newtonian fluid, the apparent viscosity is constant, and equal to the Newtonian viscosity of the fluid, but for ... (Physics) [70%] 2023-11-22 [Fluid dynamics] [Tribology]...
19. Inherent viscosity: In polymer science, inherent viscosity is the ratio of the natural logarithm of the relative viscosity of a polymer to its mass concentration. Inherent viscosity is defined as \displaystyle{ \eta_{inh} = \frac{\ln \eta_{rel}}{c} }[/math] where c is ... (Physics) [70%] 2023-07-12 [Viscosity]
20. Relative viscosity: Relative viscosity (\displaystyle{ \eta_{rel} }[/math]) (a synonym of "viscosity ratio") is the ratio of the viscosity of a solution (\displaystyle{ \eta }[/math]) to the viscosity of the solvent used (\displaystyle{ \eta_s }[/math]), The significance in Relative viscosity is that ... (Physics) [70%] 2023-11-27 [Viscosity]
21. Rotational viscosity: Viscosity is usually described as the property of a fluid which determines the rate at which local momentum differences are equilibrated. Rotational viscosity is a property of a fluid which determines the rate at which local angular momentum differences are ... (Physics) [70%] 2025-02-02 [Fluid dynamics] [Viscosity]...
22. Volume viscosity: Volume viscosity (also called bulk viscosity, or second viscosity or, dilatational viscosity) is a material property relevant for characterizing fluid flow. Common symbols are ζ , μ ′ , μ b , κ {\displaystyle \zeta ,\mu ',\mu _{\mathrm {b} },\kappa } or ξ {\displaystyle \xi }. (Material property relevant for characterizing fluid flow) [70%] 2025-04-11 [Colloidal chemistry] [Fluid dynamics]...
23. Ford viscosity cup: The Ford viscosity cup is a simple gravity device that permits the timed flow of a known volume of liquid passing through an orifice located at the bottom. Under ideal conditions, this rate of flow would be proportional to the ... (Physics) [57%] 2023-12-11 [Fluid dynamics]
24. Time-dependent viscosity: In continuum mechanics, time-dependent viscosity is a property of fluids whose viscosity changes as a function of time. The most common type of this is thixotropy, in which the viscosity of fluids under continuous shear decreases with time; the ... (Physics) [57%] 2023-11-19 [Viscosity]
25. Liquid viscosity blending: Liquid viscosity blending calculations to determine the viscosity of a blend of two or more liquids having different viscosities are best performed by using what is known as the Refutas equation in a three-step procedure. The first step is ... [57%] 2023-06-23
26. Fuel viscosity control: Fuel viscosity control is a technique to control viscosity and temperature of fuel oil (FO) for efficient combustion in diesel engines of motor vessels and generators of oil-fired power plants. Fuel oil's viscosity strongly depends on the temperature ... (Engineering) [57%] 2023-02-22 [Engine fuel system technology]
27. High viscosity mixer: High viscosity mixers are mixers designed for mixing materials with laminar mixing processes because the ingredients have such high viscosities that a turbulent mixing phase cannot be obtained at all or cannot be obtained without a high amount of heat ... (Engineering) [57%] 2023-07-15 [Industrial equipment]
28. Ford viscosity cup: The Ford viscosity cup is a simple gravity device that permits the timed flow of a known volume of liquid passing through an orifice located at the bottom. Under ideal conditions, this rate of flow would be proportional to the ... [57%] 2023-07-08 [Fluid dynamics] [Viscosity meters]...
29. Time-dependent viscosity: In continuum mechanics, time-dependent viscosity is a property of fluids whose viscosity changes as a function of time. The most common type of this is thixotropy, in which the viscosity of fluids under continuous shear decreases with time; the ... (Property of certain fluids to change viscosity over time) [57%] 2024-11-13 [Viscosity]
30. Constant viscosity elastic fluid: Constant viscosity elastic liquids, also known as Boger fluids are elastic fluids with constant viscosity. This creates an effect in the fluid where it flows like a liquid, yet behaves like an elastic solid when stretched out. (Physics) [50%] 2022-10-02 [Fluid dynamics]
31. Temperature dependence of viscosity: Viscosity depends strongly on temperature. In liquids it usually decreases with increasing temperature, whereas, in most gases, viscosity increases with increasing temperature. (Physics) [50%] 2023-12-05 [Non-Newtonian fluids]