Study of temperature equalization in a ventilated room with air supplied through an oscillator
T.S. Korskova, M.A. Zasimova, V.V. Ris, N.G. Ivanov
Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia
Keywords: ventilated room, jet oscillator, air mixing, room cooling, URANS modeling
Abstract
The transient effects that develop when supplying fresh air to a ventilated space through a jet oscillator were numerically studied. The results of parametric two-dimensional URANS simulations in the Reynolds number range of (5.3 - 53)×103 showed that with an increase in the supply flow rate, the frequency of self-oscillations of the supply jet increases linearly, while the Strouhal number varies slightly: from 3.3·10-3 to 5.4·10-3. The use of an oscillator intensifies air mixing significantly compared to the basic option with a stationary air supply through a slot, which provides almost uniform temperature distribution in the room during cooling.
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