o:3243 Novi pristup predviđanju dinamike požara u zatvorenom prostoru u zavisnosti od uslova ventilacije i geometrije А new approach to predicting fire dznamics in enclosed spaces based on ventilation condition and geometry : doctoral dissertation sr Fires in enclosed spaces represent one of the most complex safety challenges in the field of civil engineering and fire protection due to the intricate interaction of physicochemical processes that influence their development rate. The dynamics of fire within buildings are governed by the synergistic effects of multiple parameters, with ventilation opening characteristics and spatial geometry playing a crucial role.Traditional approaches to predicting fire development predominantly rely on empirical models and standardized fire curves, which fail to accurately represent real conditions in enclosed spaces. These limitations can lead to inaccurate risk assessments, directly impacting occupant safety, the effectiveness of fire protection systems, and the structural stability of buildings during fires.This dissertation presents an innovative model for predicting fire dynamics in enclosed spaces based on advanced numerical simulation methods to address these limitations. Specifically, the research relies on algorithms and software tools based on Computational Fluid Dynamics (CFD), utilizing the Fire Dynamics Simulator (FDS) software package, for analysis.The primary objective of this research is to define a new fire development model under realistic conditions, enabling more precise predictions of fire development phases in enclosed spaces with varying ventilation and geometric characteristics. In this context, the specific research goals include analyzing the impact of natural ventilation on fire development phases, examining the effects of spatial geometry on combustion dynamics, quantifying deviations in heat release rate curves compared to standard reference fire curves, and validating the proposed model through comparative analysis with experimental results obtained under both laboratory and real-world conditions. Biografija autora: list 176.Bibliografija: list. 162-168. Datum odbrane: 18.12.2025. Fire Protection 91552100 187271945 91552101 8811 2026-04-03T14:02:43.053Z 45 no 46 Damir, 1975- Malkočević 134174217 2025 63 mentor Milan, 1958- Blagojević 1280359 2025 63 član komisije Dušica, 1961- Pešić 7869031 2025 63 član komisije Mića, 1965- Vukić 14290023 2025 63 član komisije Dragan, 1959- Mlađan 6715495 2025 63 član komisije Miomir, 1966- Raos 8564583 2025 176 listova 6464105 http://phaidrani.ni.ac.rs/o:3243 no yes 12 2026-04-03T14:02:43.320Z 70 numerička simulacija, požar u zatvorenom prostoru, ventilacioni faktor, geometrija prostora, požarna kriva numerical simulation, enclosures fire, ventilation factor, spatial geometry, fire curve 614.84(043.3) T200 1738 18A10 18A1004 2025