Fluid discharge from pipe to atmosphere

[foo9008]

Homework Statement

I know that when the fluid flow from pipe to reservoir, the coefficient of discahrge is 1, where head loss =k(v^2)/2g... How about the fluid is discharged from pipe to atmosphere??

Homework Equations

The Attempt at a Solution

 

[foo9008]

IMO , it is still 1 for the coefficient of loss from the pipe to atmosphere , is it true , can someone clarify??

 

[welovephysics]

i think there is no need to include the loss due to the fluid friction loss from pipe to atmosphere... i am not really sure thoigh