I need to calculate the downward vertical force exerted on a section of tubing that is submerged and discharging a cold water flow into hot water.
The tubing is 27.125 inches long and is connected to a water supply on one end w/ a flow rate of 3 GPM. The other end is open to a tank of hot water. I am assuming the tube is completely submerged in water. The tube has ID 0.58" and OD 0.65". The tube material is smooth plastic. The flow cycles on and off, so I am assuming the greatest force will be when it first turns on, similar to the jolt felt when a firehose or garden hose first turns on.
I have calculated several different forces several ways (including shear stress along the tube inner wall and momentum flux at the outlet) and everything I get is of minimal value, always <0.1 lbf.
Any sort of help is appreciated.
The tubing is 27.125 inches long and is connected to a water supply on one end w/ a flow rate of 3 GPM. The other end is open to a tank of hot water. I am assuming the tube is completely submerged in water. The tube has ID 0.58" and OD 0.65". The tube material is smooth plastic. The flow cycles on and off, so I am assuming the greatest force will be when it first turns on, similar to the jolt felt when a firehose or garden hose first turns on.
I have calculated several different forces several ways (including shear stress along the tube inner wall and momentum flux at the outlet) and everything I get is of minimal value, always <0.1 lbf.
Any sort of help is appreciated.
