Water flowing through a pipe has a dynamic viscosity of Pa⋅s and a density of 1,000 kg/m3. The pipe has an internal diameter of 0.0055 m.
What average speed must the water flow stay below for the Reynolds number of the flow to stay below 2,300?
Above what average speed of water flow will the Reynolds number exceed 2,900?
Water flowing through a pipe has a dynamic viscosity of Pa⋅s and a density of 1,000 kg/m3. The pipe has an internal diameter of 0.025 m and the water flows at an average speed of 0.15 m/s. What is the Reynolds number for the flow?
A viscous fluid flows in a pipe of constant cross-sectional area perpendicular to the flow direction. The diagram shows a cross section of the pipe parallel to the flow direction. The fluid moves in horizontal layers in laminar flow at speeds to . Which of the following correctly describes the relationship between the speeds of the layers?