Št. zadetkov: 11
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)
Izvirni znanstveni članek
Oznake:
obdelava slik;termovizijska kamera;strojno učenje;bazenski požar;image processing;thermal camera;machine learning;pool fire;
A spatio-temporal video enhancement of a small-scale pool fire is performed to address the typically low spatial resolution and frame rate of inexpensive infrared (IR) cameras. Improving image quality can increase the applicability of low-cost thermal cameras for certain research tasks and analyses. ...
Leto:
2026
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:
beton;hlajenje;prosta toplotna deformacija;požarna varnost;strukturna požarna tehnika;eksperimenti;bayesova inferenca;concrete;cooling;free thermal strain;fire safety;structural fire engineering;experiments;bayesian inference;
With the rise of performance-based structural fire design, understanding the behaviour of materials during both the heating and cooling phases of a fire has become essential. Traditionally, research has focused on the heating phase, resulting in limited data on material properties during cooling, in ...
Leto:
2026
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)
Objavljeni znanstveni prispevek na konferenci
Oznake:
sevalna plošča;požarno testiranje;prenos toplote;sevanje;toplotni tok;požarna varnost;toplotni mejni pogoji;radiant panel;fire testing;heat transfer;radiation;heat flux;fire safety;thermal boundary conditions;
Fire resistance tests rely on the use of standardized furnaces to apply specific thermal boundary conditions to assess the performance of construction materials and systems in fire conditions. However, these tests are very expensive and encounter challenges related to repeatability and uncertainties ...
Leto:
2024
Vir:
Zavod za gradbeništvo Slovenije (ZAG)
Izvirni znanstveni članek
Oznake:
sevalni panel;preskus ognjevarnosti;prenos toplote;sevanje;toplotni tok;toplotni mejni pogoji;radiant panel;fire testing;heat transfer;radiation;heat flux;thermal boundary conditions;
Bench-scale fire testing has gained popularity as a highly controllable and cost-effective solution, overcoming many of the shortcomings of traditional large-scale fire resistance tests. Whereas gas-fired radiant panels have demonstrated significant success in this area, the present study introduces ...
Leto:
2025
Vir:
Zavod za gradbeništvo Slovenije (ZAG)
Izvirni znanstveni članek
Oznake:
ugasnitev plamena;ponovno vžiganje plamena;požar v zaprtem prostoru;pogoji z nezadostnim prezračevanjem;CFD-modeliranje;FDS;flame extinction;flame re-ignition;under-ventilated conditions;CFD modelling;
Large eddy simulations of ventilation-controlled compartment fire scenarios conducted with FDS and new dynamic extinction and re-ignition models are presented. Flame extinction is modelled considering an enthalpy balance, based on a critical flame temperature, while re-ignition is allowed if the loc ...
Leto:
2026
Vir:
Zavod za gradbeništvo Slovenije (ZAG)
Izvirni znanstveni članek
Oznake:
ugasnitev plamena;ponovno vžiganje plamena;kritična temperatura plamena;hitrost deformacije;CFD-modeliranje;FDS;flame extinction;flame re-ignition;critical flame temperature;strain rate;CFD modelling;
A new dynamic flame extinction and re-ignition model that considers the local properties of the flow has been developed. The extinction model is based on the default enthalpy balance used by the Fire Dynamics Simulator (FDS) and employs a dynamic calculation of the critical flame temperature, 𝑇𝐶𝐹 ...
Leto:
2026
Vir:
Zavod za gradbeništvo Slovenije (ZAG)