Publications by authors named "Savannah S Wessies"
Article Synopsis
- The study utilized naphthalene sublimation experiments in a heated-air wind tunnel to analyze how aspect ratio and dimensionless separation distance affect the heat transfer coefficients of three naphthalene cylinders.
- The researchers developed Nusselt number correlations for both individual cylinders and the combined three-cylinder setup, highlighting the relationship between these factors.
- Key findings indicated that the Reynolds number had the most significant impact on Nusselt number, with smaller aspect ratios yielding higher values and increased dimensionless separation distance contributing to higher Nusselt numbers at constant Reynolds numbers and aspect ratios.
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 transfer of glowing firebrands to a surface. The current study presents a novel method for conducting time-resolved heat transfer measurements from individual firebrands across a range of flow conditions.
View Article and Find Full Text PDFPrevious 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 for better understanding of the firebrand ignition process. In particular, convective heat transfer correlations over a single firebrand and a pile of firebrands are lacking.
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