Hydrostatic Water Pressure
Hydrostatic Water Pressure
(OP)
This may be a dumb question, but I can't seem to find anything to help me determine an answer so I thought I'd see if maybe someone might could point me in the right direction.
In my industry, we use a column of water in a down tube(open to the atmosphere) to achieve various head pressures. In one of our down tubes, the diameter is 15" by 20' in length and is constricted to 6.75" by a nozzle at the base of the down tube. My question is, if you start out with a certain size diameter in a column of water and then nozzle it down to half that size, how do you determine how much head pressure you have coming out of the nozzle?
In my industry, we use a column of water in a down tube(open to the atmosphere) to achieve various head pressures. In one of our down tubes, the diameter is 15" by 20' in length and is constricted to 6.75" by a nozzle at the base of the down tube. My question is, if you start out with a certain size diameter in a column of water and then nozzle it down to half that size, how do you determine how much head pressure you have coming out of the nozzle?





RE: Hydrostatic Water Pressure
RE: Hydrostatic Water Pressure
RE: Hydrostatic Water Pressure
Initially, I was under the same understanding as you RWF7437, that the size, shape and material have nothing to do with the pressure except for the height but our results out in the field make me believe that it does have a slight affect on head pressure. What makes this even harder to determine is that there is not an easy way to determine initial flow rate because what we use this column of water for is to invert a liner or flexible tube into an existing drainage pipe or storm drain for rehabilitation. I believe the height of the fluid column is giving me pretty close answer but I am wanting to find exactly what I have if yall have any more suggestions.
RE: Hydrostatic Water Pressure
RE: Hydrostatic Water Pressure