A fluid is "sheared" when different layers of the fluid move past one another. Shear rate describes this velocity. A more technical definition is that the shear rate is the flow velocity gradient perpendicular, or at a right angle, to the flow direction. It poses a strain on the liquid t...
There are two types of viscosity: kinematic viscosity and dynamic viscosity. Kinematic viscosity measures the comparative rate at which a liquid or gas flows. Dynamic viscosity measures a gas's or liquid's resistance to flow as force is applied to it. You must know both the kinematic and dyna...
Eventually, the liquid boils and becomes a gas or a dense gas-like substance if heated at high enough pressure. At the point where it transitions between the liquid-like and gas-like state is the minimum value of viscosity. Viscosity is considered impossible to calculate from theory because it...
A model is developed, leading to the surprisingly simple relation $u \\\approx \\\kappa/6$. We critically examine the available experimental data for $^4$He relevant to this simple relation and predict the kinematic viscosity for the stretched liquid $^4$He along the $\\\lambda$-line ...
Viscosity of sea water is more a function of temperature and salinity. Don't know if there are equations for this, but you can find tables at: http://www.unisense.com/support/pdf/gas_tables.pdfOctober 7, 2003, 11:51 Re: How to calculate dynamic viscosity for sea wat #4 James ...
Dynamic viscosity is often measured with a rotational viscometer, which uses a spinning probe immersed in a sample of liquid. Depending on the nature of the test, the probe may be a cylinder, a sphere, a disk or some other shape. Viscosity is determined by the force needed to rotate the...
A non-Newtonian fluid is a type of liquid that doesn’t behave like most other liquids. Imagine if you were stirring a bowl of water; it would move around easily no matter how fast or slow you stirred it. But if you were to stir a non-Newtonian fluid, like slime or ketchup, it ...
In scientific terms, they'rehydrocolloids. When hydrocolloids disperse in a liquid, they bind to the water molecules, which reduces their movement. This reduced movement is apparent to us, as increased viscosity or thickening. The most obvious example of using a stabilizer in cooking is when you...
You add the borate ions to the mixture, and it then starts to connect these long strands together. They begin to tangle and mix until the substance is less like the liquid you started with and thicker and rubbery like slime! Slime is a polymer. ...
Calculate the acid value of the sample from the liters of standard solution consumed by titration and its molar concentration, as well as the mass and non-volatile content of the sample to be tested. This method is not suitable for the determination of acid value of phenolic resin, because ...