Getting Qideal from Bernouli and continuity

  • Thread starter Sheogoroth
  • Start date
So, I found a paper relating to a lab report that I've been working on that says that I can get
Qideal=(pi*d^2)/4) √((2ΔP/(ρ(1-D/D')^4 ))
From Bernouli which my book has as:
P11+1/2v1^2+gh1=P22+(1/2)v2^2+gh2

and Continuity which my book has as:
ρ1A1V1 = ρ2A2V2

I'm able to get kind of in that direction applying this,
ΔP = -ρgΔh

And the area portion makes sense logically

But I'm wondering what I'm missing.
Thanks!
 
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The OP seems to be citing a relationship for calculating the volumetric flow rate across a resistance in the flow, such as an orifice plate based on the pressure difference across the resistance.
 

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