Flow Measurement - Pitot Static Tubes Bernoulli's Equation etc.?

Click For Summary

Discussion Overview

The discussion revolves around the use of a Pitot-static tube connected to a water manometer for measuring air velocity. Participants explore the relationship between pressure differential and air velocity, referencing Bernoulli's equation in the context of fluid dynamics.

Discussion Character

  • Homework-related
  • Mathematical reasoning

Main Points Raised

  • One participant presents a problem involving the measurement of air velocity using a Pitot-static tube and a manometer, expressing uncertainty about how to begin without knowing the pressures.
  • Another participant points out that the pressure differential can be determined from the height difference in the manometer.
  • A subsequent participant seeks clarification on which equation to use, confirming the pressure differential as 12.4 cm.
  • Another reply suggests using Bernoulli's equation as the relevant approach for this problem.

Areas of Agreement / Disagreement

The discussion does not reach a consensus, as participants express varying levels of understanding and seek clarification on the application of Bernoulli's equation.

Contextual Notes

Participants have not explicitly defined the assumptions regarding the fluid properties or the conditions under which Bernoulli's equation applies, leaving some aspects of the problem unresolved.

felixj500
Messages
5
Reaction score
0
A Pitot-static tube connected to water manometer is used to measure the velocity of air. If the deflection between the two arms of the manometer is 12.4cm, determine the air velocity when the density of air is 1.25kgm-3 and the density of the water in the manometer is 1000kg/m3.

I am not really sure where to start as i don't have the pressures...do i?

Thanks
 
Engineering news on Phys.org
You have the pressure differential since you have the difference in height of the two sides of the manometer.
 
Thank you for your reply, so what equation do i use from here? My pressure differential is 12.4 cm?

Thanks
 
You already said it. Bernoulli.
 

Similar threads

  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 26 ·
Replies
26
Views
2K
  • · Replies 11 ·
Replies
11
Views
4K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 31 ·
2
Replies
31
Views
5K
  • · Replies 6 ·
Replies
6
Views
3K
Replies
4
Views
2K
  • · Replies 9 ·
Replies
9
Views
3K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 11 ·
Replies
11
Views
3K