Using a CFD Simulation in Designing a Smoke Management System in a Building

The thermal management system of a commercially available notebook computer is investigated by using a commercial finite volume Computational Fluid Dynamics (CFD) software. After taking the computer apart, all dimensions are measured and all major components are modeled as accurately as possible. Heat dissipation values and some characteristics of the components are obtained from the manufacturer’s specifications. Different heat dissipation paths utilized in the design are investigated. Two active fans and aluminum heat dissipation plates as well as the heat pipe system are modeled according to their exact specifications. Under different operating powers, adequacy of the existing thermal management system is observed. Average temperatures of the sides of the casing, the keyboard and the internal components are reported in the form of tables. Thermal resistance networks for five different operating conditions are obtained from the analysis of the CFD simulation results.

Download Full-text

Electrostatic Precipitation: A Novel Smoke Management System for Laparoscopic Surgery

Journal of Minimally Invasive Gynecology ◽

10.1016/j.jmig.2018.09.718 ◽

2018 ◽

Vol 25 (7) ◽

pp. S255

Author(s):

W.D. Winkelman ◽

K. Armstrong ◽

P.L. Rosenblatt

Keyword(s):

Laparoscopic Surgery ◽

Management System ◽

Electrostatic Precipitation ◽

Smoke Management

Download Full-text

Optimization of an automated smoke control system in an industrial atrium

International Journal of Petrochemical Science & Engineering ◽

10.15406/ipcse.2019.04.00099 ◽

2019 ◽

Vol 4 (1) ◽

pp. 25-36

Author(s):

Iman Mohamad Sharaf ◽

Ghada El-Sawah

Keyword(s):

Management System ◽

Numerical Models ◽

Systems Design ◽

Pool Fire ◽

Industrial Building ◽

Smoke Control ◽

Fire Control ◽

Worst Case ◽

Smoke Plume ◽

Smoke Management

Pool fires are the most common hazard in many industrial applications. Therefore, automated fire control systems and occupational safety design codes and procedures are of major importance in industrial building systems design. Smoke is the main factor that causes deaths and casualties in fires. Thus, fire safety engineering (FSE) considers smoke management system as one of the most important factors. In this study, smoke generation during pool fire is numerically simulated to optimize the smoke management system. The smoke and temperature distributions inside a mechanically ventilated atrium are simulated using a computational fluid dynamic (CFD) transient model after initiating a diesel pool fire in the worst case scenario. Four numerical models are simulated and their results are compared to choose the model that optimizes smoke control. The models enable better approximations of the underlying physical phenomena in smoke transport for a single phase gas mixture. A velocity field approach is predicted using a turbulent standard k-ε model to study the domain with smoke plume. The ability to demonstrate and predict the flow field inside the atrium while the roof exhaust fans are operating is also investigated. The study aids in smoke management systems' design and helps to better understand of smoke plume behavior inside large spaces.

Download Full-text