Abstract
For the exclusion of bad smell around a bedside, theoretical researches have been attempted. A simulated calculation of the air streams is solved based on two dimensional Navier-Stokes equations. Effects of the shape of the mouth of exhaust pipe are investigated for various cases. For each case, the flows of the air around the bed are visualized by flow vectors, and the change in the flow vectors is investigated. It is concluded that a design to get a large effect is possible. Cyclic system of the current which blows air from the outlet should be considered for one important candidate.
