George Hadjisophocleous

  • Citations Per Year
Learn More
This paper presents results of a project initiated by ASHRAE and the National Research Council of Canada. The project applies both physical and numerical modeling to atrium smoke exhaust systems to investigate the effectiveness of such systems and to develop guidelines for their design. In this paper, results were obtained from a series of tests conducted(More)
This paper presents the results of full-scale fire and environmental tests to study the use of video image detection (VID) systems for the protection of large industrial applications and atria. The tests were conducted in a large test atrium facility and a large burn hall. The effects of VID system variables, fire sources and environments on the performance(More)
A fire growth and smoke movement model for a multi-compartment building has been developed at the National Research Council of Canada. This development is primarily intended to help evaluate the risk from fires in buildings. This paper presents the related physical models, numerical methods, and some verification examples. The 2-zone ordinary differential(More)
This paper discusses the numerical study of the effectiveness of atrium smoke exhaust systems. This study is part of a project initiated by ASHRAE and the National Research Council of Canada (NRCC), in which both physical and numerical techniques were employed to determine the effectiveness of such systems and to develop guidelines for their design. This(More)
CONTAMW is an indoor air quality analysis network model developed to determine airflow and contaminant concentrations in each compartment of a building. In addition to its applicability in indoor environment modeling, CONTAMW is also used to model smoke control systems in multi-story buildings. This study investigates whether this model can accurately(More)
A new model for estimating the effects of high thermal radiation heat fluxes on occupants has been developed. This model allows the user to specify the type of clothing worn by typical occupants (e.g., street clothing or protective clothing), percentage of body covered by clothing, and occupant characteristics (e.g., age). Numerical models of heat transfer(More)
This paper presents a study on the effectiveness of a smoke exhaust system in a complex building using the Computational Fluid Dynamics (CFD) models. The CFD model FDS (Fire Dynamics Simulator) was used for this study. To simulate fires in the building a design fire was selected to represent the fire loads expected in the lobby area. Smoke movement from the(More)
  • 1