How to calculate the water pressure?

[loy]

the pipes is horizontal,there are 3 opennings at the end.the water is pumped with 8 bars , how to calculate the pressure of these 3 openings?

 

[tiny-tim]

welcome to pf!

hi loy! welcome to pf!

the pipes is horizontal,there are 3 opennings at the end.the water is pumped with 8 bars , how to calculate the pressure of these 3 openings?

is the water moving or stationary?

what do these openings connect to?

on the information given so far, isn't the pressure 8 bars throughout?

 

[loy]

hi,tim~

hi loy! welcome to pf!


is the water moving or stationary?

what do these openings connect to?

on the information given so far, isn't the pressure 8 bars throughout?

the water is moving,but i only know the pressure of water pump is 8 bars and the diameter of the pipe which is connected to the pump is 2 and 1/2 inches.
there are 3 pipes connected to the previous pipe,3 of them are 1m long,1 is above the ground(d=1/2 inches) and another 1 is underground(d=1/2inches).the last one(2 and 1/2 inches) is at the same level with the main pipe.
Actually the pressure is exerted by the pump to the water.

 

[tiny-tim]

hi loy!

so it's a 2.5 in diameter pipe, connected to two 0.5 in pipes and another 2.5 in pipe?

ok, what do you think the answer is?

 

[loy]

hi loy!

so it's a 2.5 in diameter pipe, connected to two 0.5 in pipes and another 2.5 in pipe?

ok, what do you think the answer is?

yup,you've got it~
erm...sigh...i am sorry ,the main problem is i don't know the answer...
so , i need your help~

 

[tiny-tim]

yup,you've got it~
erm...sigh...i am sorry ,the main problem is i don't know the answer...
so , i need your help~

i'm happy to help

but we don't just give out the answers here

you must know something about this type of problem …

what equations have you learned?

 

[rcgldr]

Exit pipe diameter doesn't matter (assuming you're ignoring pressure drop due to friction and viscosity). Height does matter, but you don't specify the height of the pipe above or the depth of the pipe below.

 

[loy]

i'm happy to help

but we don't just give out the answers here

you must know something about this type of problem …

what equations have you learned?

okay,i have learned some basic theorem(like bernoulli's equation,stokes' law) about the pressure,but i don't know which 1 should be used since i have never met the question which needs to calculate the pressure of fluid with 1 input and 3 outputs.all i know is the dV/dt of input and output are the same.

Exit pipe diameter doesn't matter (assuming you're ignoring pressure drop due to friction and viscosity). Height does matter, but you don't specify the height of the pipe above or the depth of the pipe below.

I did.the 3pipes connected to the main pipe are 1-m long ,meaning 1 is 1m(vertical,d=0.5inches) above the level of the main pipe,another 1 is 1m(vertical,d=0.5inches) below the level,the main pipe and the last(1m) are horizontal and d=2.5inches.just like a cross.