What is the difference between dynamic and kinematic viscosity?
The viscosity of the liquid is an important physical property that affects the behavior of the liquid when it flows. Highly viscous liquids are more resistant to stress deformation and current less easily, while less viscous liquids flow easier and are less resistant to stress. Two main methods of viscosity measurement are in terms of dynamic and kinematic viscosity. These measures are interconnected, but have different applications. It measures the resistance of the fluid to the flow - in other words, the internal friction of the fluid, or how easily it can be deformed at a mechanical voltage at a given temperature and pressure. The technical definition of dynamic viscosity is the ratio of shear voltage to the speed gradient. When the force is applied perpendicular to the surface of the liquid, it deforms sideways or scissors. The ease or difficulty of this deformation is dynamic viscosity, sometimes simply referred to as viscosity. This measure is obtained by a dynamic viscosity of liquid and the distribution of liquid density. The higher the viscosity of the liquid, the less it will beFlow under the gravitational force and the higher its kinematic viscosity.
dynamic and kinematic viscosity are expressed in various measurements. The international unit measurement system (SI) for dynamic viscosity is Pascal-Seconds. Pascals is a pressure measurement - in this case the shear voltage applied to the liquid - while the seconds measure the time required for deformation. Dynamic viscosity can also be measured using a unit called Poise, another level of pressure versus time. The common unit used to measure kinematic viscosity is Stokes or square centimeters per second, although sometimes the unit is used meters per second.
Use of dynamic and kinematic viscosity measurements is essential for various applications in the real world. For example, it is important to formulate color with a certain dynamic viscosity to ensure that it can be mixed and applied in the correct thickness. Kinemati measurementIt is used more often in cases where the liquid must flow through the tube or lubricate the machine, as in the car engine.
products such as engine oil, which are subjected to different physical conditions, must have specific dynamic and kinematic viscosity to behave properly. The viscosity of the fluids changes on the basis of temperature and pressure. For example, in cold weather, the oil thickens and densifies, causing it less easily. It is important to know both the dynamic and cinematic conditions of the viscosity in this situation to predict how oil will behave in the temperature difference.