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The aerodynamic study on ventilation of agricultural buildings has not been active because of difficulties of conducting field experiment, so approach of engineering such as aerodynamic analysis should be performed to systematically as well as scientifically design and manage the system. Moreover, this technology can make great contribution to development of overall HVAC system of agricultural buildings suitable for seasonal climates of Korea. Through this paper, I would like to introduce the newest scientific and engineering technologies that can be used for the studies on improvement (or development) of structural and ventilating designs. Typical technologies of aerodynamics are large-sized wind tunnel, particle image velocimetry (PIV) technology, computational fluid dynamics (CFD), and so on.