Hi,(adsbygoogle = window.adsbygoogle || []).push({});

I am becoming a bit stuck with a fairly cynical question.

I want to work out the velocity of the fluid from the static and total pressures obtained in a wind tunnel experiment.

The manometor was open to air (atmospheric) at one end and measuring static or total pressure at the other. Both readings were taken.

To calculate the velocity p0=p+0.5*rho*u^{2}

Which all seems fine.

Rearrange to find u

However, the values I have are not Ptotal or Pstatic correct?

I need to add atmospheric pressure to these?

I have an equation which is:

P_{0}=p_{atm}-rho*g*h

So for an example,

p_{atm}=101081.39 Pa

h? (Reading from manometor)=0.002

So:

101081.39-(1.2*9.81*0.002)=P_{0}

Would this indeed be the total pressure?

Paul

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Aerospace Velocity from Static and Total pressures

Loading...

Similar Threads - Velocity Static Total | Date |
---|---|

Torque required to move a wheeled weight | Mar 5, 2018 |

Air flow over a circular cylinder | Jan 26, 2015 |

Pitot Tube will not measure stagnation pressure | Oct 31, 2014 |

Aerospace Use of pitot static tube for calculation of airplane velocity | Sep 5, 2009 |

Hovercraft Thrust - Velocity verses Static Pressure | Apr 3, 2006 |

**Physics Forums - The Fusion of Science and Community**