Bernoulli's theorem of conservation in a nozzle spraying to atmosphere

AI Thread Summary
Bernoulli's theorem can be applied to the scenario of water flowing from a pump through a pipe and out of a nozzle. The pressure gauge in the pipe measures the pressure before the nozzle, while the nozzle's outlet pressure is typically atmospheric pressure. According to Bernoulli's principle, the pressure at the nozzle outlet is considered zero gauge pressure because it is exposed to the atmosphere. The working example referenced indicates that the pressure at the outlet is zero due to the conversion of pressure energy into kinetic energy as the fluid exits the nozzle. Understanding this relationship is key to applying Bernoulli's theorem correctly in fluid dynamics.
Michael V
Messages
25
Reaction score
0
Hi there, I'm having a problem behind the theory of bernoulli's theorem. Can it be applied in an application where water flows from a pump into a pipe with x diameter and out of a nozzle with y diameter to atmosphere. There is a pressure gauge on said pipe. There is a nozzle screwed into this pipe with no pressure gauge on it.

Is the gauge pressure at the nozzle atmospheric pressure, 0 or is it what can be calculated using bernoulli's theorem of conservation of energy?
 

Attachments

Engineering news on Phys.org
Ive just found this worked example. It says that the pressure at the outlet is 0. Why is this?
 

Attachments

Thread 'Race car suspension Class'

Posted June 2024 - 15 years after starting this class. I have learned a whole lot. To get to the short course on making your stock car, late model, hobby stock E-mod handle, look at the index below. Read all posts on Roll Center, Jacking effect and Why does car drive straight to the wall when I gas it? Also read You really have two race cars. This will cover 90% of problems you have. Simply put, the car pushes going in and is loose coming out. You do not have enuff downforce on the right...
View full post »

Thread 'Cantilever help'

I'm trying to decide what size and type of galvanized steel I need for 2 cantilever extensions. The cantilever is 5 ft. The space between the two cantilever arms is a 17 ft Gap the center 7 ft of the 17 ft Gap we'll need to Bear approximately 17,000 lb spread evenly from the front of the cantilever to the back of the cantilever over 5 ft. I will put support beams across these cantilever arms to support the load evenly
View full post »
Thread 'What's the most likely cause for this carbon seal crack?'

Thread 'What's the most likely cause for this carbon seal crack?'

We have a molded carbon graphite seal that is used in an inline axial piston, variable displacement hydraulic pump. One of our customers reported that, when using the “A” parts in the past, they only needed to replace them due to normal wear. However, after switching to our parts, the replacement cycle seems to be much shorter due to “broken” or “cracked” failures. This issue was identified after hydraulic fluid leakage was observed. According to their records, the same problem has occurred...
View full post »

Similar threads

Force of pressurized water exiting a hose or pipe?
Replies
20
Views
10K
Positive displacement pump for spray nozzles
Replies
7
Views
2K
Bernoulli’s Equation and External Forces
Replies
4
Views
2K
Bernoulli vs. Reynold Transport Theorem Problem for Raincap
Replies
11
Views
3K
Water Pressure at the tap and practical Bernoulli equation
Replies
10
Views
6K
Negative pressure head in a nozzle
Replies
2
Views
3K
Bernoulli equation and parallel pipe branch
Replies
31
Views
4K
Doublet flow in Fluid Dynamics between two spheres or cylinders
Replies
0
Views
1K
Tapping water from well by gravity -- calculations
Replies
37
Views
3K
Maximum vapor velocity from a heat exchanger into a turbine
Replies
2
Views
1K

Hot Threads

Recent Insights

Back
Top