Št. zadetkov: 16
Izvirni znanstveni članek
Oznake:
razpadanje ognja;hlajenje;izgorevanje;naravna izpostavljenost ognju;dinamika požara;požari v oddelkih;požarno inženirstvo;učinkovitost;požarna varnost;fire decay;cooling;burnout;natural fire exposure;fire dynamics;compartment fires;structural fire engineering;performance-based;fire safety;
The current research study discusses and characterises the fire decay and cooling phase of post-flashover compartment fires, as they are often mixed up despite their important heat transfer differences. The two pha- ses are defined according to the fire heat release rate time-history. The fire decay ...
Leto:
2023
Vir:
Zavod za gradbeništvo Slovenije (ZAG)
Pregledni znanstveni članek
Oznake:
intumescentni premazi;protipožarna zaščita;modeliranje;požarna varnost;gradbeni požarni inženiring;načrtovanje na podlagi zmogljivosti;intumescent coatings;fire protection;modelling;structural fire engineering;fire safety;performance-based design;
Purpose Intumescent coatings are nowadays a dominant passive system used to protect structural materials in case of fire. Due to their reactive swelling behaviour, intumescent coatings are particularly complex materials to be modelled and predicted, which can be extremely useful especially for perfo ...
Leto:
2024
Vir:
Zavod za gradbeništvo Slovenije (ZAG)
Izvirni znanstveni članek
Oznake:
sevalni paneli;požarno testiranje;prenos toplote;toplotni tok;električne grelne blazinice;toplotni robni pogoji;radiant panels;fire testing;heat transfer;heat flux;electrical heating pads;thermal boundary conditions;
This research study concerns an experimental, budget-friendly, electricity- powered apparatus for bench-scale fire testing. The apparatus consists of various ele- ments, of which the most important are ceramic heating pads, used to impose heat fluxes on exposed surfaces of specimens. The test method ...
Leto:
2023
Vir:
Zavod za gradbeništvo Slovenije (ZAG)
Izvirni znanstveni članek
Oznake:
lesene konstrukcije;požarna varnost;ožiganje;ničelna trdnostna plast;naravni požar;ogrevanje;hlajenje;strukturni požarni inženiring;oblikovanje na podlagi zmogljivosti;timber structures;fire safety;charring;zero-strength layer;natural fire;heating;cooling;structural fire engineering;performance-based design;
This research study investigates the effect of different heating and cooling regimes on the effective cross-section of timber elements exposed to natural fires. An advanced calculation method based on a 1D finite-difference heat transfer model and effective thermo-physical properties is adopted to a ...
Leto:
2025
Vir:
Zavod za gradbeništvo Slovenije (ZAG)
Objavljeni znanstveni prispevek na konferenci
Oznake:
simulacije;računalniška dinamika tekočin;simulator požarne dinamike;stenski čas;simulations;computational fluid dynamics;fire dynamics simulator;wall time;
The total wall time is often difficult to predict a priori in compartment fire simulations due to dynamic phenomena that can occur, e.g., flame extinction. The wall time is dependent on multiple physical factors in the simulation, along with simulation factors and the system used to compute the mode ...
Leto:
2024
Vir:
Zavod za gradbeništvo Slovenije (ZAG)
Objavljeni znanstveni prispevek na konferenci
Oznake:
lesene konstrukcije;požarna varnost;prenos toplote;zoglenitev;sloj ničelne trdnosti;hlajenje;timber structures;fire safety;heat transfer;charring;zero-strength layer;cooling;
This paper presents a numerical study on the effect of the heating and cooling phases on the reduction of the effective cross-section of timber elements, in particular on the evolution of the char depth (300°C isotherm) and zero- strength layer. An advanced calculation method based a finite-differen ...
Leto:
2023
Vir:
Zavod za gradbeništvo Slovenije (ZAG)
Izvirni znanstveni članek
Oznake:
gradbeni požarni inženiring;požari v prostorih;gostota požarne obremenitve;jeklene konstrukcije;zanesljivost;verjetnost odpovedi;structural fire engineering;compartment fires;fire load density;steel structures;reliability;probability of failure;
A commonly used approach to represent the thermal load in a compartment fire is the Eurocode Parametric Fire Curve (EPFC), which specifies gas temperatures (or rather adiabatic surface temperatures). Recognizing the significant deviations between real fires and the EPFC framework, the concept of mod ...
Leto:
2024
Vir:
Zavod za gradbeništvo Slovenije (ZAG)
Izvirni znanstveni članek
Oznake:
meritve s termoelementom;simulacije CFD;prenos toplote;požari v prostorih;hlajenje;dinamika požara;FDS;thermocouple measurements;CFD simulations;heat transfer;compartment fires;cooling;fire dynamics;
Data from thermocouple (TC) measurements play a pivotal role in fire safety science and engineering studies. It is well-known that there are deviations from the actual local gas temperature and many studies have led to the development of correction factors. The present study focuses on these deviati ...
Leto:
2024
Vir:
Zavod za gradbeništvo Slovenije (ZAG)
Izvirni znanstveni članek
Oznake:
intumescent coatings;heat transfer;numerical model;swelling;fire safety;
This research study presents a heat transfer model aimed at estimating the thermal and physical response of intumescent coatings. The numerical model is inspired by the outcomes of an experimental study focused on analysing the insulating effectiveness of a commercial intumescent coating for a range ...
Leto:
2023
Vir:
Zavod za gradbeništvo Slovenije (ZAG)
Izvirni znanstveni članek
Oznake:
faza hlajenja;razpadanje požara;dinamika požara;požari v oddelkih;konstrukcijski požarni inženiring;požarna varnost;cooling phase;fire decay;fire dynamics;compartment fires;structural fire engineering;fire safety;
The main characteristics of the cooling phase of post-flashover compartment fires are studied using a simplified first-principles heat transfer approach to establish key limitations of more traditional methodologies (e.g., Eurocode). To this purpose, the boundary conditions during cooling are analys ...
Leto:
2024
Vir:
Zavod za gradbeništvo Slovenije (ZAG)