Physics, 27.07.2019 01:20, chefjones06p0gvlh
Adimensionless group called the reynolds number (nne) is defined for flow in a pipe or tube re where v is the average velocity in the pipe, ρ is the fluid density, μ is the fluid viscosity, d is the tube diameter. the second form of the group indicates that it is a ratio of the convective (turbulent) momentum flux to the molecular (viscous) momentum flux, or the ratio of inertial forces (which are destabilizing) to viscous forces (which are stabilizing). when viscous forces dominate over inertial forces, the flow is laminar and fluid elements flow in smooth, straight streamlines, whereas when inertial forces dominate, the flow is unstable and the flow pattern breaks up into random fluctuating eddies. it is found that laminar flow in a pipe occurs as long as the value of the reynolds number is less than 2000. calculate the maximum velocity and the corresponding flow rate (in cm3/s) at which laminar flow of water is possible in tubes with the following diameters: d = 0.25, 0.5, 1.0, 2.0, 4.0, 6.0, 10.0 in.
Answers: 3
Physics, 23.06.2019 01:30, kaylaamberd
The ideal gas model is valid if which of the following conditions is true? the gas density is low. the gas density is high. the temperature is low. the temperature is high. the gas density and the temperature are low. the gas density and the temperature are high. the gas density is high and the temperature is low. the gas density is low and the temperature is high.
Answers: 3
Adimensionless group called the reynolds number (nne) is defined for flow in a pipe or tube re where...