AbstractAn olfactory display is a device that delivers various odors to the user's nose. It can be used to add special effects to movies and games by releasing odors relevant to the scenes shown on the screen. In order to provide high‐presence olfactory stimuli to the users, the display must be able to generate realistic odors with appropriate concentrations in a timely manner together with visual and audio playback. In this paper, we propose to use computational fluid dynamics (CFD) simulations in conjunction with an olfactory display. Odor molecules released from their source are transported mainly by turbulent flow, and their behavior can be extremely complicated even in a simple indoor environment. In the proposed system, a CFD solver is employed to calculate the airflow field and the odor dispersal in the given environment. An odor blender is used to generate the odor with the concentration determined from the calculated odor distribution. Experimental results on presenting odor stimuli synchronously with movie clips show the effectiveness of the proposed system. © 2011 Wiley Periodicals, Inc. Electr Eng Jpn, 177(1): 65–72, 2011; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.21087