Alexander J Josephson,Johanna Aurell,Susan A Cohen et al.
Alexander J Josephson et al.
Understanding particulate emission factors in grassland fires is critical for improving air quality assessments and refining emissions inventories. This study explores the dynamic and heterogeneous nature of fire processes and their influen...
Marcos Vanella,Ryan Falkenstein-Smith,Thomas Cleary
Marcos Vanella
An extensive set of backdraft experiments has been performed at the NIST National Fire Research Laboratory. These experiments were conducted in a reduced scale compartment, and are part of defining the conditions conducive to backdraft. Fur...
Double-shear tests of high-strength structural bolts at elevated temperatures [0.03%]
高温下高强度结构 bolt 的双剪试验
R M Peixoto,M S Seif,L C M Vieira Jr
R M Peixoto
The behavior of high-strength structural steel at elevated temperatures, especially under shear loading, is not well established in the literature. This paper presents results from recently conducted tests on high-strength structural bolts ...
On the Nusselt number correlations of tandem surrogate firebrands on a flat surface [0.03%]
平坦地面上并排火源的努塞尔数关联式研究
Savannah S Wessies,Jiann C Yang
Savannah S Wessies
Through the heat-mass transfer analogy, naphthalene sublimation experiments were conducted in a heated-air wind tunnel to study the effects of aspect ratio and dimensionless separation distance on the convective heat transfer coefficients o...
Thermal performance of composite slabs with profiled steel decking exposed to fire effects [0.03%]
钢承板组合楼板的耐火性能试验研究
Jian Jiang,Joseph A Main,Jonathan M Weigand et al.
Jian Jiang et al.
This paper presents a systematic investigation of the influence of various parameters on the thermal performance of composite floor slabs with profiled steel decking exposed to fire effects. The investigation uses a detailed finite-element ...
CFD informed design of bench-scale experiments to characterize air entrainment into fuel beds induced by columnar vortices [0.03%]
柱状涡诱导燃料床内气泡夹带的台架实验的CFD 辅助设计与特性研究
Giovanni Di Cristina,Rodney A Bryant
Giovanni Di Cristina
Recent experiments show that strong vortices, similar to fire whirls, can form far from a fire front in the region of smoldering fuel. These buoyancy-induced columnar vortices, visualized by entrained smolder smoke, were observed lofting ho...
Coherent Laser Ranging of Deforming Objects in Fires at Sub-Millimeter Precision [0.03%]
sub-mm精度激光相干扫描测量燃烧中变形物体三维坐标分布的新方法研究进展
Matthew S Hoehler,Artur Chernovsky,Matthew F Bundy et al.
Matthew S Hoehler et al.
Light Detection and Ranging (LiDAR) is a powerful tool to characterize and track the surface geometry of solid objects. In a fire, however, no method has excelled at measuring three-dimensional shapes at millimeter precision while offering ...
Amy E Mensch,Savannah S Wessies,Anthony Hamins et al.
Amy E Mensch et al.
While the impact of wildland-urban interface fires is growing, firebrand exposure is a significant but not well understood contributor to fire spread. The ignition threat of firebrand exposures can be characterized by measuring the heat tra...
Convective heat transfer correlation for a single surrogate firebrand and a simplified firebrand pile on a flat plate using naphthalene sublimation in heated air flow [0.03%]
基于萘升华的单个火brands和简化火brand堆在加热气流中的平板上对流换热关联式研究
Savannah S Wessies,Jiann C Yang
Savannah S Wessies
Previous studies have shown that most structure ignitions in wildland urban-interface fires are due to firebrand deposition and ignition. The heat transfer mechanisms involved in firebrand deposition need further study and characterization ...
Prevention of Cooktop Ignition Using Detection and Multi-Step Machine Learning Algorithms [0.03%]
基于检测和多阶段机器学习算法的防止燃气灶点燃事件发生的方法
Wai Cheong Tam,Eugene Yujun Fu,Amy Mensch et al.
Wai Cheong Tam et al.
This paper presents a study to examine the potential use of machine learning models to build a real-time detection algorithm for prevention of kitchen cooktop fires. Sixteen sets of time-dependent sensor signals were obtained from 60 normal...