The effects of fire products on pedestrians are introduced into a multigrid evacuation model, in which the space is discretized into smaller grids with the size of 0.1 m × 0.1 m and each pedestrian occupies 5×5 grid sites. The effects of fire products on pedestrians consist of two parts: the desired movement direction and the step frequency. The data of fire products obtained from the simulatio...

Fire hazard causes lots of economic loss and personal injuries every year. Many ways are proposed to help people escape quickly from dangerous region. As one key step for fire escaping, the fire escaping system detects fire and dynamically provides escaping route to help people escape from fire scene. With the advanced technique, Wireless Sensor Network (WSN), the fire escaping system is develo...

It takes money, time, and energy to set up an experimental grid measure the effectiveness of fire suppression parameters. Therefore, computational fluid dynamics (CFD) is alternative in all fields as consequences modeling. Fire Dynamic Simulator (FDS) a CFD software developed by National Institute Standards Technology (NIST) model generate results for spray models. FDS uses Large Eddy Simulatio...

Many fires and explosions happen in tank farm. A fire and explosion simulation method based on VR is used. Tank fire and explosion special effect is realized by classical particle system. The real-time fire growth model, fireball growth model, fireball heat radiation model are created. The shock wave model of BLEVE also is created. The models and results of FDS (Fire Dynamic Simulator) are buil...

The evaporation of sprinkler droplets is an important phenomena in fire simulations both for heat removal from the gas and for heat removal from surfaces. The Fire Dynamics Simulator (FDS) has seen a number of different evaporation models over its history where each subsequent model has attempted to address limitations and issues with the previous model. In this paper, we address the problems o...

This study chronicles the development and integration of a smoke detector activation algorithm that describes the response time of a smoke detector into a Large Eddy Simulation (LES) fire model. Although the activation algorithm could be used with any CFD smoke movement model, the results here address specifically its application to the Fire Dynamics Simulator (FDS). The fire model predicts the...

The effects of the size a designed fire on ventilation system an adjacent zone is estimated in this study based visibility requirement 5 m non-fire at 600 s after ignition. To verify adequacy dynamics simulator (FDS) input file, smoke movement and ceiling temperature under hot test conditions AS4391-1999 were compared with those from FDS results. average temperatures measured 12 locations withi...

An essential part of fire risk assessment is the analysis of fire hazards and fire propagation. In this work, models and tools for two different aspects of numerical fire simulation have been developed. The primary objectives have been firstly to investigate the possibility of exploiting state-of-the-art fire models within probabilistic fire risk assessments and secondly to develop a computatio...

The purpose of this paper is to investigate the fire performance in a multi-storey cross-laminated timber (CLT) structure by computational fluid dynamics (CFD) technique using Fire Dynamics Simulator (FDS v.6.7). study investigates temperature, heat release rate (HRR), and gas concentration (O2, CO2). importance research ensure that buildings adequate for occupant safety property protection. Mo...