- #1

Poodge*

- 1

- 0

So basically we have recorded pressure values with a pitot tube, moving the tube 2mm from the centre of the venturi each time and re-recording. I believe these are stagnation pressures and I need to calculate the static pressure to work out the velocity? Which i could then use to work out flow rate

We redid this experiment twice after changing the pressure along the venturi

These are the results obtained from the 30mmH20 reading from the manometer

Distance from center Average pitot pressure

0mm 35.55

2mm 34.85

4mm 34.75

6mm 34.5

8mm 34.1

10mm 33.7

12mm 33.15

14mm 31

16mm 25.55

density = 1.247600752 (kg/m^3)

air pressure = 759 mmHg

temperature = 290K

Large diameter of venturi = 108.10 mm

Small diameter of venturi = 29.00 mm

I have all these values and I am so lost as to what to do with them.

Please someone help me :(