Methods for investigating indoor air conditions of ventilated rooms.

The acquisition of temperatures and velocities is a permanent recurrent task for the investigation of air flow in ventilated rooms. On the one hand it is important to measure the temperature and velocity field with a high spatial resolution. On the other hand, in general, varying outdoor conditions prevent from reaching a steady state and an additonal demand consists in short measuring times. Sometimes, the obtained measuring results are used both to supply appropriate boundary conditions for numerical computations and to verify the CFD-codes used.

Free convection along a vertical wall with uniform temperature.

This study has been performed as a complement to the graduate studies of Yonghui Jin at the National Institute of Occupational Health and the Royal Institute of Technology. It was initiated by the need to analyze free convective flows along vertical walls within the test chamber employed for experimental work with particle transport in turbulent buoyant plumes.