Evaluation of aerothermodynamic characteristics of a fire-fighting smoke ventilation system using a software package for finite element modelling

Introduction. The conducted research included an engineering calculation of the parameters of the smoke ventilation of the fitness club premises and the subsequent finite element modelling of smoke extraction processes using a software package. Comparing the results of the two methods makes it possible to evaluate both the accuracy of the engineering methods and the adequacy of the mathematical model.

Aim and objectives. The purpose of the study is to comprehensively assess the aerodynamic characteristics and effectiveness of the fire-fighting smoke ventilation system of a fitness club in a multifunctional building using a combined approach, including engineering calculation and finite element modelling. To achieve this goal, it is necessary to solve the following tasks:

• perform an engineering calculation of the mass flow rate of smoke and the available pressure for a natural system;
• to carry out a series of calculations in a software package for finite element modelling in order to determine the fields of aerodynamic parameters (speed, pressure) and visualize the fluxes of the smoke-air mixture for warm and cold periods of the year.

Methods. To solve the problems, the use of mathematical modelling of aerodynamic processes in smoke ventilation systems in buildings is justified to determine the parameters that determine the effectiveness of its operation.

Conclusions. The engineering calculation carried out and the subsequent finite element modelling of the operation of the smoke ventilation system in the fitness club of the multifunctional complex allowed us to obtain a detailed picture of the distribution of the main aerodynamic parameters in various operating modes and showed good consistency in key parameters: smoke consumption, velocities and pressures.

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