Can it be calculated ? [fluid mechanics]

[Externet]

Hi. This is not my field of expertise at all, am begging your assistance.

 

In a gasoline automobile engine, given the intake manifold absolute

pressure, the displacement, the revolutions per unit of time, the air temperature and a throttle position reading ; is it possible to precisely calculate the air mass flow ? Or more information would be needed ?

 

Miguel

[J.C.MacSwell]

Hi. This is not my field of expertise at all' date=' am begging your assistance.

 

In a gasoline automobile engine, given the intake manifold absolute

pressure, the displacement, the revolutions per unit of time, the air temperature and a throttle position reading ; is it possible to precisely calculate the [b']air mass flow [/b]? Or more information would be needed ?

 

Miguel

 

You would need all the physical data, dimensions of the manifold and surrounding structure, right through to the exhaust etc. Then if you made the right assumptions about the quality of flow (the non laminar part and how it would effect the flow rate) you could make a good calculation. Certainly not likely to be exact though and correct assumptions may require fair bit of experience.