IOobject constructor problem

iyer_arvind

i wish to calculate the mean flow (and many other calculations) from time say 0.1s to 10.0s and write the final output in folder say Avg (at the same level as 0.1,0.2,0.3, ... 10.0) so for the corresponding volScalarField if i write the IOobject in its constructor as

U_bar(IOobject("U_bar","Avg",mesh .... )...)

it doesn't work. I guessed that the second arg indicated the folder which is generally runtime.TimeName(), and replaced it with "Avg"

can you please help?

thanks a lot