CBE 30355 - Lecture Notes - Nov. 3, 2022
Read through pages 234-244 of the notes and view the online narration below. Don't forget to complete the quiz in Canvas!
The main points of the lecture were
- High Re Flows: Bernoulli's Equation
After this class you should be able to:
- Use Bernoulli's Equation to solve for the pressure distribution in different geometries.
- Know what inviscid, irrotational flow means!
- The class notes.
- BS&L, chapter 4
In class today we talked about Bernoulli's Equation and how it could be used to
solve for pressure distributions - and how at high Re the pressure goes down when the
velocity goes up! A classic example of how this can be employed is the Venturi meter.
Basically, the flow rate of a
fluid is measured by determining the pressure differential produced by a slight
contraction of a pipe. While usually little beasties (e.g., the diameter of a pipe),
sometimes they can grow to truly gargantuan proportions. A press release describing what is
billed as the world's largest flow meter is given
You can also go directly to a picture of the thing here.
The meter itself is a bit too big to put in the undergrad lab - in fact it
approaches the size of Fitzpatrick!
How blowing on a plate can actually lead to suction...