Abstract
In this study, a numerical simulation was performed using the fire dynamics simulator to examine the performance of a smoke control system in the case of a large fire in a long tunnel. A regional long tunnel that facilitates frequent movement in the port area was simulated. The fire scenario was set as a heavy goods vehicle fire corresponding to a large fire based on the existing real-scale experimental research data. A jet fan with an inner diameter of 1250 mm used in the regional tunnel was included in the tunnel simulation. For the evaluation of the smoke control system performance, the effects of the flow rate and installation interval of the jet fan on the smoke behavior, visibility, and temperature was analyzed. As the flow rate of the jet fan decreased, backlayering was lengthened, which reduced the time to achieve life safety standard.
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