Air flow measurement - again...

[tom cloud]

>Just a few half assed ideas...
>
>What is the relationship between Air density, and drag?
>Don't you need density measurements? If the air is moist, and contains 
>h2o, therefore is less dense, how does that combust compared to dry air
>under high pressure (more dense)?
>
>The hot wire measures this, but a dragged object wouldn't be able to
>calculate
>true combustible related properties.
>
>What are the reverse flow problems, and how do they affect the hotwire?
>
>David

This is where I keep coming back to measuring pressure drop across
an opening (i.e. throttle).  Knowing temp (and maybe RH), seems t'me
one could know very well the mass of air -- and the direction it
was flowing!


Tom Cloud <cloud at peaches.ph.utexas.edu>