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Head loss at an inlet baffle

Head loss at an inlet baffle

Head loss at an inlet baffle

(OP)
I am trying to find an equation that I can use to calculate the head loss at an inlet flow distribution baffle of a center feed circular clarifier. Most part of the baffle will be submerged. The influent will enter the clarifier through the center column travel upwards, leave the center column through four circular opening radically outwards, pass under the inlet distribution baffle before travelling radially out towards the peripheral effluent weirs. Any feedback will be highly appreciated.

RE: Head loss at an inlet baffle

I'd try to help, if I thought I had any idea about what that looks like.

We are more connected to everyone in the world than we've ever been before, except to the person sitting next to us.  Lisa Gansky

RE: Head loss at an inlet baffle

I would think that just calculating the openings as an orifice with a coefficient of 0.6 would bring you close enough. If the openings are more than just holes in the centre column and involve sections of piping then it becomes a bit more complicated.

You will find that most of us here are much better with drawings than with words. A sketch would enable more informed comment.

Katmar Software - Engineering & Risk Analysis Software
http://katmarsoftware.com

"An undefined problem has an infinite number of solutions"

RE: Head loss at an inlet baffle

It looks very much like I imagined it to be. Is it just the centre pipe with the 4 holes that you are concerned about? How accurate do you need to be? My experince with clarifiers is that velocities are low and the pressure drop through those holes should be a few mmWC. And if it does overflow slightly is that a problem?

Katmar Software - Engineering & Risk Analysis Software
http://katmarsoftware.com

"An undefined problem has an infinite number of solutions"

RE: Head loss at an inlet baffle

Dear katmar Hello/Good Day,

Have not been around recently,

However I really like your current 'signature phrase'

Best Regards
Qalander(Chem)

RE: Head loss at an inlet baffle

I want to add, "none of them likely to be very good."

We are more connected to everyone in the world than we've ever been before, except to the person sitting next to us.  Lisa Gansky

RE: Head loss at an inlet baffle

Hi 786392/Qalander - good to see you here again.  Many years ago I went through several Kepner-Tregoe problem solving courses and that really convinced me that asking the question properly was at least 50% of the way to getting the right answer. If the question is stated badly the solution will be exactly as described by BigInch - and there will be lots of them!

Katmar Software - Engineering & Risk Analysis Software
http://katmarsoftware.com

"An undefined problem has an infinite number of solutions"

RE: Head loss at an inlet baffle

Thanks Katmar/BigInch,

You people are simply lovely& great professionals.
 

Best Regards
Qalander(Chem)

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