CFD applications on underground commerce buildings smoke movement and smoke management

Studies on smoke movement and smoke management in an underground commerce building become the focus of fire research fields. CFD has become an important means to deal with fire safety. To select model equation properly and compartmentalize calculating mesh rationally is very important to the results of CFD numerical simulation. This paper compares the results of Sichuan scientific research academic's experiment and the computer simulation results, and the paper fixes on the k-epsilon two equation model with six-flux radiation model to do the simulation. The paper aims at the specialty of the underground building, and bases the practically review, fixes on the geometry model. And later uses CFD software in the underground commerce buildings fire protection and smoke movement, using CFD software to simulate the movement of the smoke and its management. From simulation results the paper opens out the effect factors of the underground commerce buildings in the nature smoke-eject form. The paper does research on different mechanism-eject smoke position, the smoke quantity and the quantity of mending air. At last the paper educes the effect on the smoke-eject of these factors.