1.You are trying to remove 10.0um diameter particles in a water treatment plant. The water is at 20 degrees C, and the particle density is 1.2g/mL. The plant treats 0.100 m^3/s of water. It is proposed to use a 3.5 m deep, rectangluar sedimentation tank with a length to width ratio of 5:1. What is the minimum required width of the basin?
2.Viscous flow in a pipe is to be tested in the laboratory using both air and water. Assume that the velocities (Vair and Vwater) are such that the air flow is dynamically similar to the water flow. Determine the ratio of the velocities, Vair/Vwater, if the tests are conducted at 80 C. Which velocity will be higher in the lab tests?