Abstract
For different combinations of fire heat release rate and longitudinal velocity, a series of experimental tests concerning for plug-holing phenomenon have been carried out on a 1/20 reduced scale model tunnel. Firstly the smoke temperature distribution beneath the tunnel ceiling was given out. And based on the temperature profiles of pile A, B and C, the air-smoke interfaces for three locations were accordingly labeled and flow patterns below the vent were given out. Secondly with the augment of the smoke exhaust rate, the smoke layer decreased. For the case (Q=4.68MW, v=0.33m/s), the stability of upper smoke layer had been broken, when the smoke flow rate increased to 58m3/s corresponding to plug-holing phenomenon. Lastly for different combinations of fire heat release rate and longitudinal velocity, the critical smoke exhaust rate can be obtained. And a simple dimensionless correlation, suitable for practical application, was given out.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
