Demonstrating Natural ventilation through accurate modelling

Hi ,

Can accurate modelling outputs be used to demonstrate that the modelled unit/house is naturally ventilated ? ( i.e how much percentage of the year ).

I do know that the Nathers certificatesdo not indicate the level of natural ventilation. Is there any other output from the software that can be used to calculate or check the percentage of natural ventilation?



Any feedback would be appreciated.
Thanks,
Deejan

Ventilated through what? If your house is well insulated, natural ventilation will be more about how breathable are your walls on one side and how wide and for how long you open up your windows/doors on the other side.