Abstract
Simulation, as a method of scientific research, makes it possible, without performing costly and labor-intensive field experiments on models, to carry out all necessary experiments to determine the temperature modes of fire in cable tunnels. The purpose of the research of this work was to determine the temperature regime of fire in a cable tunnel depending on its shape, size and fire load. Mathematical models of cable tunnels were created in one of the CFD software systems. Cable products are constantly evolving and improving. For tests on the fire resistance of building structures of cable tunnels, a standard temperature mode of fire is used which may not correspond to fire mode in a real cable tunnel. The computational experiments were carried out and the temperature regimes of fires in tunnels with different parameters were determined. The obtained results showed the parameters of cable tunnels, which influence the temperature regime of fire in tunnels most. In this paper the use of computational experiments for the study of heat and mass transfer processes in fires in cable tunnels was examined further. CFD Fire Dynamics Simulator 6.2 was used.
Highlights
Despite significant advances in solving problems to improve fire safety of cables there are many issues concerning both cables and cable lines, including cable tunnels of a rectangular cross section [1]
For tests on the fire resistance of building structures of cable tunnels, a standard temperature mode of fire is used which may not correspond to fire mode in a real cable tunnel
The obtained data made it possible to confirm the adequacy of computer models of fires in cable tunnels and to conduct mathematical modeling to determine the temperature regime of a fire for testing fire resistance of building structures of cable tunnels
Summary
Despite significant advances in solving problems to improve fire safety of cables there are many issues concerning both cables and cable lines, including cable tunnels of a rectangular cross section [1]. Cable products are constantly evolving and improving. For tests on the fire resistance of building structures of cable tunnels, a standard temperature mode of fire is used which may not correspond to fire mode in a real cable tunnel. Simulation, as a method of scientific research, makes it possible to carry out all necessary experiments to determine the temperature modes of fire in cable tunnels without performing costly and labor-intensive field experiments on models. The computational experiments were carried out and the temperature regimes of fires in tunnels with different. The obtained results showed the parameters of cable tunnels which influence the temperature regime of fire in tunnels most
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