May i know the value of 'k' in q=k*sqrt(dp) . does it have to be calculated or is it a constant ?

 

Thibhika...
I have an answer, but can you assure me that it is not for Academic Benefit ?
Regards, Phil Corso

 

http://www.valvias.com/flow-coefficient.php

 

Did you search the internet first?
https://www.hydraulicspneumatics.co...lves/article/21887929/the-valve-flow-constant

 

I did and thats why i posted it here and this is not the answer i’m looking for.

 

k is a coefficient that is determined from flow tests, either for valves, flow meters, or various restrictions, take a look at a engineering hand book, there are many

 

Thibika...
I think you are referring to the Bernoulli equation as applied to a container/tank of liquid (probably water because density is not mentioned) escaping or flowing thru a hole/orifice on the side and at a certain depth below the surface of the liquid in the container/tank ! The "k", then, in your problem is the surface area of the container/tank !
There is a presumption... the surface area of the container/tank must be much, much greater then that of the hole/orifice !
Regards, Phil Corso