That study aimed at investigating the contaminate distribution in and around a naturally ventilated livestockbuilding with and without an upstream obstacle.

A wall return and a ceiling return air arrangements of turbulent type clean rooms are presented in this paper. The influences of obstacles on the flow fields are compared by a numerical simulation.

Critical parameters such as the particle source location, air supply inlet design, operating table location, and lamp design are responsible for the particle distribution within the operating room, they have been investigated by means of CFD.

This paper deals with a CFD simulation of a chilled ceiling in a test chamber. The results demonstrate that a slight non-uniformity in cooling power of the ceiling panels produces a great asymmetry in predicted room airflows.

The intention of the authors is to find a proper air conditionning system to achieve higher IAQ environment.They consider a new air-conditioning system that uses both a Partition-type Fan-Coil Units system (PFCUs) with a Dedicated Outdoor Air System (DOAS).

This paper is a presentation of a theoretical and experimental analysis of supply air jet flow patterns in a mixing ventilation system. Investigation procedure aims at reducing draft risks.

The experiment was conducted by means of a scaled-room wtih floor supply ventilation system, it intended to know the vertical distribution of contaminant concentration emitted from a human body. The validity of the models has been proved in so far as the calculated concentrations were almost equal to the measured values.

Measurements are made first in a full-scale room ventilated with a mixing ventilation, and later with a displacement ventilation. A new method to design mixing ventilation is established. A comparison shows the thermal comfort obtained with the two systems.

This paper presents the behaviour of a thermal plume combine with a forced ventilation. A method to locate the position of the thermocline in a ventilated room is shown. It also gives and compares the results obtained by means of a solutal simulation on an hydraulic model and from full-scale experiments in a climatic chamber.

This paper deals with low Reynolds number jets for personalised ventilation and the possibility to control them in order to obtain useful modifications of the flow field, it can be done by simply adding a ring-like perturbation in front of the jet itself.