Since thermal comfort on human body is influenced by the local air flow speed, it is needed to estimate the distribution of air flow speed in a room for the "effective ventilation". Numerical solution of the equations for the motion of 3-dimensional turbulent air flow and model experiments are conducted for this purpose. The experiment model is a single room model house with 2 windows on the opposite walls. It is actually ventilated by the natural wind. Non-directivity thermistor anemometers are used to measured the 3-dimensional distribution of indoor air flow speed.
Turbulent recirculating flows in many types of ventilated rooms are numerically simulated three-dimensionally by means of k-e 2-equation turbulence model. The results obtained from numerical simulation are compared with those given by model experiments concerned with air velocity and contaminant diffusion.
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