Research on the Spread of Fire Smoke in High-rise Residential Kitchens Based on Pyrosim

In order to conduct in-depth research on the propagation law of pollutants caused by fire in different scenarios in the kitchen, this study took the 19-storey high-rise residential building as the object of numerical simulation analysis, studied the smoke propagation law of the high-rise residential kitchen, and verified the fire model by using the grid-independent and tracer gas experiment. The results show that when the smoke pipe is on fire, the smoke first spreads vertically in the smoke pipe, and then spreads horizontally from the mouth of the range hood to the surroundings, while when the electrical appliance is caught by short circuit, natural gas leakage and the oil pot is fired, the smoke first spreads horizontally on the floor where the fire source is located, and then spreads vertically through windows and stairs. The fire of oil smoke pipeline and natural gas leakage is the most harmful, followed by the fire hazard of electrical short circuit, and the fire of oil pan is significantly increased in the middle and late stages.