# Recent content by dragioden

1. ### How is the head-flow curve dependant on reynolds number

i see, i dont really think its that big a deal i was just asked to explain find whether Ch was affected by the speed of the impeller and the one who asked me to do so (lecturer) suggested that i look into reynolds number if it did appear to have some change. thanks for the help.
2. ### How is the head-flow curve dependant on reynolds number

the graph it attached below as for the head coefficient in this case would be the dimensionless gravitational constant you mentioned. as the equation i had used to calculate the head coefficient was Ch=gH/(Nd)^2
3. ### How is the head-flow curve dependant on reynolds number

this the diagram given for the experiment layout, the second pump has been isolated for it, a transparent rubber tubing carries the water from the pump through the control valve. This valve controls how much water is let through at a time to the weir channel. Just as the water is about to leave...
4. ### How is the head-flow curve dependant on reynolds number

Homework Statement i trying to figure out why the head-flow curve changes at the speeds of 90, 80 and 70 revs and was told that i might want to look into reynolds number for this as the head coefficient is somewhat dependant on this. Homework Equations Ch=gH/(Nd)^2 Cf=Q/Nd^3 pi=f(Q/Nd^3, re)...