Optimization of 3D Smoke Simulation and Evaluation of Ventilation

FOTO_ARISTIDES.JPGO Docente da Faculdade de Ciências e Tecnologia da Uni-CV, Professor Doutor Aristides Silva publicou a teoria da sua Tese em livro técnico, intitulado “Optimization of 3D Smoke Simulation and Evaluation of Ventilation”, publicado pela editora Alemã LAP LAMBERT, Academic Publishing, no passado mês de março.

Depois de ter concluído em maio de 2015 o Doutoramento em Ciências da Computação com a Tese intitulada “Optimization of 3D Smoke Simulation and Evaluation of Ventilation System in a Stairwell”, com concentração em Tecnologia Aplicada de Computadores, pela Wuhan University of Technology, China, o Professor Doutor Aristides Silva, docente da Faculdade de Ciência e Tecnologias da Uni-CV, apresenta agora a teoria da sua Tese em livro técnico.

Optimization of 3D Smoke Simulation and Evaluation of VentilationAristides Silva é investigador na área da Computação Gráfica, com publicações em revistas científicas com revisão de pares e participações em conferências internacionais.

A apresentação oficial pelo próprio autor, acontece em data a indicar.

Abaixo pode ler o abstract do livro que já se encontra disponível para venda numa das maiores livrarias internacionais de venda online no MoreBooks.

 

Abstract

The spread of smoke in fire situations is one of the most critical aspects of evacuation, and it is of great significance to study fire behavior. Thus, it becomes motivating a technical-scientific analysis in smoke control process based on the specific characteristics of the buildings. Many recent studies of computing graphics focused on smoke visualization, however, the studies of fire effect are quite limited. The realistic rendering of smoke simulation can be considered one of the most complex tasks in fluid dynamics of computer graphics.

In this book, the proposed method of smoke simulation rendering is based on Fire Dynamic Simulator (FDS) from the output-result of Excel file, where the attributes of a dynamic particle (mass, position, velocity, forces, and life cycle) improved the efficiency, and the rendering was implemented by making smoke particles and motion effect. Thus, the proposed method can improve smoke simulation and particles more accurately and effectively. With the coordinates data from Excel file for DirectX particle system, it is changed the coordinate value of the particles, computed the moving location and finally the boundary of the smoke flow at mechanism simulation of fluid dynamics. In this proposed method, we focused on smoke location boundary, and this simulation code shows that the emission rate of 5000 particles, has performance improvement in computation time in up to 8% and gives reality to user’s view.

Later the smoke movement and the ambient airflow in a enclosure stairway under fire scenarios are studied using numerical simulation. Also, the effect of different air settings velocity, as well as position and the inlet area under the fire-induced conditions are evaluated numerically. These obtained data could be used as benchmark for future numerical validation studies. Based on Computational Fluid Dynamics (CFD), these tests were performed using Fire Dynamics Simulator (FDS) code, to compare the results of experiments and simulations. These results show that the lack of symmetry in the air settings vents has greater influence on the plume than the total of the inlet area. However, no significant difference has been observed between the air settings typologies of supply and mechanical exhaust evaluated.

Keywords: Smoke simulation, FDS, Fluid dynamics, Air settings, Stairwell.

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