![]() This text is adapted from Openstax, University Physics Volume 1, Section 14.7: Viscosity and Turbulence. Then the speed of the accelerating smoke reaches the point that it begins to swirl due to the drag between the smoke and the surrounding air, indicating turbulent flow. At the tip of the incense stick, the smoke rises smoothly for a while showing laminar flow. The smoke from a burning incense stick is an excellent example of fluid flow. Significant velocities occur in directions other than the overall direction of flow. In turbulent flow, high speed and obstruction cause the mixing of layers via eddies and swirls. This creates a gradient in velocity, which decreases in the direction from the moving surface towards the fixed surface. At room temperature, water has a dynamic viscosity of 0.001002 kg/. honey has a dynamic viscosity of 10,000 cP peanut butter sits at 250,000 cP. These measurements can be converted with a 1:1 ratio. The velocity of the top layer is higher than the bottom layers. Previously, we mentioned the three typical SI units used for dynamic viscosity. However, viscosity causes drag between layers as well as with the fixed surface. In laminar flow, layers of the fluid flow in parallel without mixing. There are two types of fluid flow, namely laminar flow and turbulent flow. The viscosity of water decreases with an increase in temperature, calculated to be 0.282 mPa Typical analyses include the study of processing behavior, influence of additives, thermal sensitivity, shear sensitivity, compounding behavior, and others. ![]() For example, the viscosities of air, water, and honey are 0.0181 mPa Torque rheometry measures the viscosity-related torque generated by the resistance of a material to the shearing action of the plasticating process. Viscosity is a temperature-dependent quantity that varies from one fluid to another by several orders of magnitude. In this example, water has a lower viscosity than honey and maple syrup. To get this answer: You need to know the density of honey: its 1. This property of fluids is called fluid viscosity. The density calculator supports metrics in both metric and imperial units: kg. This difference in the flow of different kinds of liquids arises due to the fluid friction between the liquid layers and the liquid and the surrounding material. When water is poured into a glass, it falls freely and quickly, whereas if honey or maple syrup is poured over a pancake, it flows slowly and sticks to the surface of the container. ![]()
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