# WHAT IS THE VALUE OF 'k' IN BERNOULLI'S LAW FOR SQUARE ROOT EXTRACTION q=k*sqrt(dp)

#### Thibhika

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

#### PhilCorso

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

#### Thibhika

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

#### Dave

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

#### PhilCorso

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