Lesson: Viscosity and Turbulence
In this lesson, we will learn how to use Poiseuille's law for laminar fluid flow and how to model the onset of turbulence with Reynolds numbers.
Sample Question Videos
Worksheet: 23 Questions • 2 Videos
The viscosity of a dilute inert gas at a temperature of 100 K is 20 μPa⋅s and at a temperature of 500 K is 45 μPa⋅s. What is the viscosity of the gas at a temperature of 300 K?
A flat steel plate of 5.00 mm thickness, 1.00 m length, and 0.500 m width is falling through the atmosphere with its 1.00-meter-length side aligned vertically. The density of the steel is kg/m3. The air in the region of the plate has a density of 1.20 kg/m3, a thermal conductivity of 0.0260 W/m⋅K, and a viscosity of m2/s. What is the terminal velocity of the plate?
The density of an unknown fluid is 0.78 g/mL. A 2-millimeter-diameter brass ballbearing takes 2.8 s to fall 25 cm through the fluid. What is the fluid’s viscosity?