scholarly journals MODELLING OF FIRE IN AN OPEN CAR PARK

2016 ◽  
Author(s):  
Timea Márton ◽  
Anne Dederichs ◽  
Luisa Giuliani
Keyword(s):  
Mechanical Properties ◽  
High Temperatures ◽  
Fire Spread ◽  
Current Paper ◽  
Spread Rate ◽  
Dynamic Simulator ◽  
Car Park ◽  
Fire Dynamic Simulator ◽  
Fire Accidents

Steel car parks exhibit high vulnerability to fire, as a consequence of the degradation of the steel mechanical properties at high temperatures and of the combustible type and amount. Real fire accidents in open car parks demonstrated a much faster and extended fire spread than predictions, assuming that a fire spread rate of 12 min and consider at most 3-4 vehicles on fire at the same time. Fire Dynamic Simulator (FDS) is applied in this current paper to study fire spread between cars. The outcomes of the investigations show that the fire spread is strongly influenced by the geometrical layout and that the distance between cars plays a determinant role on the fire spread rate and ignition of adjacent cars. In particular it was found that the fire spread can be faster than 12 minutes in the case of the cars parked 40 and 60 cm from each other.

Numerical Analysis on Parameters Adjustment of Smoke Control System in a Complicated Underground Commercial Zone

2013 ◽  
Vol 341-342 ◽  
pp. 743-747
Author(s):  
De Wen Li ◽  
Jing Zhao Zhang
Keyword(s):  
Control System ◽  
Fire Spread ◽  
Smoke Control ◽  
Smoke Movement ◽  
Technical Parameters ◽  
Fire Scenarios ◽  
Dynamic Simulator ◽  
Underground Fire ◽  
Fire Dynamic Simulator ◽  
Smoke Control System

The technical parameters adjustment of smoke control system in a complicated underground commercial zone is studied by numerical simulations. An underground fire model (it encloses a hotel, a supermarket, and a net bar) and five typical fire scenarios are designed. The Fire Dynamic Simulator code is used to investigate the characteristics of fire spread and smoke movement, and obtain the available safety egress times in different fire scenarios. The required safety egress time is calculated based on the data of actual simulation exercises and numerical simulation by Building EXODUS. The simulation results show that, when the smoke exhaust rate is 5.56 cubic meter per second and air low rate reaches 3.89 cubic meter per second simultaneously, the available safety egress time is more than the required safety egress time.

Simulation Analysis of Fire Safety System Onboard Indonesia Ro-Ro PaxCrossing Ferries

2014 ◽  
Vol 69 (7) ◽  
Author(s):  
Sunaryo Sunaryo ◽  
Yulianto Nugroho ◽  
AlfiIndra Azhary
Keyword(s):  
Fire Safety ◽  
Simulation Analysis ◽  
Air Supply ◽  
Low Visibility ◽  
Fire Scenarios ◽  
Dynamic Simulator ◽  
Fire Dynamic Simulator ◽  
Fire Accidents ◽  
Marine Accidents ◽  
Fire Accident

Fire onboard ro-ro ferry usually claims a great number of casualties. In Indonesia 41% of major marine accidents were fire accidents. Victims of ferry fire accident are usually due to smoke, heat, and low visibility. The research is aimed to simulatethe flow of heat and smoke during a fire from car decks of the ferry to passenger decks and how the fire safety systemsprovide sufficient time for the passengers to escape from the affected areas. Fire Dynamic Simulator V5 (FDS V05) software was used in three different fire scenarios namely without sprinklers; with sprinklers but without smoke exhaust and fresh air supply fans; and with sprinklers, smoke exhaust and fresh air supply fans. It is proven that water sprinklers could suppress the distribution of heat, and smoke exhaust and fresh air supply fans have contribution in maintaining the visibility.

scholarly journals Numerical Analysis for Smoke Spread in an Aircraft Hangar

2019 ◽  
Vol 111 ◽  
pp. 01090
Author(s):  
Essam E. Khalil ◽  
Hatem Kayed Haridy ◽  
Eslam Said Abdelghany Ahmed ◽  
Ahmed Ashraf Mohamed
Keyword(s):  
Numerical Analysis ◽  
Ventilation System ◽  
Spread Rate ◽  
Air Velocity ◽  
Supply Rate ◽  
Traditional System ◽  
Smoke Spread ◽  
Dynamic Simulator ◽  
Fire Dynamic Simulator ◽  
Evacuation Plan

Smoke is one of the most dangerous factors in aircraft hangar in case of fire. As it causes reduce in visibility and deaths due to high temperature or toxicity also prevents applying evacuation plan for workers. This study present numerical analysis for improving traditional system of ventilation system to manage smoke produced due to push-back vehicle on fire at hangar. By studying effect of changing extraction and supply rates, the number of extraction and supply fans, and the arrangement of extraction and supply fans on the visibility, temperature and air velocity at human level to insure not to exceed limits stated by NFPA 130[1] to apply evacuation plan for workers. The study is performed using Fire dynamic simulator to simulate 16 case studies in the hangar of airports in Brandenburg. The hangar has the outer dimensions of 83.40 m width and 77.60 m depth and thus an inner area of approx. 6,472 m2. The hangar has a medium interior height of approximately 18.20 m. The results show that using extraction fans with rate (ACH) double the supply rate for the traditional ventilation system gives very good results in controlling the smoke. As well as, decreasing the number of supply fans will make the smoke spread rate inside the hangar lower, which helps to control the smoke spread of fire in less time.

scholarly journals Verification and Validation of Fire Dynamic Simulator for Enclosed Car Park

2017 ◽  
Vol 7 (2) ◽  
pp. 105-108 ◽  
Author(s):  
Ahmad Faiz Tharima ◽  
◽  
Md Mujibur Rahman ◽  
Mohd Zamri Yusoff
Keyword(s):  
Verification And Validation ◽  
Dynamic Simulator ◽  
Car Park ◽  
Fire Dynamic Simulator

CF8C-PLUS

Alloy Digest ◽  
2008 ◽  
Vol 57 (1) ◽  
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Tensile Properties ◽  
High Temperatures

Abstract CF8C-Plus is an austenitic casting grade similar to CF8C, but with improved chemistry to stay fully austenitic at high temperatures and thus retain good mechanical properties. This datasheet provides information on composition, microstructureand tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on casting and joining. Filing Code: SS-1006. Producer or source: Caterpillar Technical Center.

Upward Fire Spread Rate Over Real-Scale EPS ETICS Façades

2021 ◽  
Author(s):  
Biao Zhou ◽  
Hideki Yoshioka ◽  
Takafumi Noguchi ◽  
Kai Wang ◽  
Xinyan Huang
Keyword(s):  
Fire Spread ◽  
Spread Rate ◽  
Real Scale

Electro-mechanical properties of multilayered aluminum nitride and platinum thin films at high temperatures

2019 ◽  
Vol 293 ◽  
pp. 128-135 ◽  
Author(s):  
P. Schmid ◽  
F. Triendl ◽  
C. Zarfl ◽  
S. Schwarz ◽  
W. Artner ◽  
...  
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Aluminum Nitride ◽  
High Temperatures

scholarly journals MECHANICAL PROPERTIES OF HIGH STRENGTH CONCRETE AT HIGH TEMPERATURES

2008 ◽  
Vol 73 (624) ◽  
pp. 341-347 ◽  
Author(s):  
Masashi MATSUDO ◽  
Hirokazu NISHIDA ◽  
Takahiro OHTSUKA ◽  
Takeo HIRASHIMA ◽  
Takeo ABE
Keyword(s):  
Mechanical Properties ◽  
High Temperatures ◽  
High Strength Concrete ◽  
High Strength ◽  
Strength Concrete

The Effect of Heat Treatment on Mechanical Properties of Car Interior Fabric Used for Injection Molding

2012 ◽  
Vol 532-533 ◽  
pp. 234-237
Author(s):  
Wei Lai Chen ◽  
Ding Hong Yi ◽  
Jian Fu Zhang
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
High Temperature ◽  
Injection Molding ◽  
High Temperatures ◽  
Material Properties ◽  
Injection Molding Process ◽  
Molding Process ◽  
Composite Fabrics

The purpose of this paper is to study the effect of high temperature in injection molding process on mechanical properties of the warp-knitted and nonwoven composite fabrics (WNC)used in car interior. Tensile, tearing and peeling properties of WNC fabrics were tested after heat treatment under120, 140,160,180°C respectively. It was found that, after 140°C heat treatment, the breaking and tearing value of these WNC fabrics are lower than others. The results of this study show that this phenomenon is due to the material properties of fabrics. These high temperatures have no much effect on peeling properties of these WNC fabrics. It is concluded that in order to preserve the mechanical properties of these WNC fabrics, the temperature near 140°C should be avoided possibly during injection molding process.

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