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X-APPLE-TRAVEL-ADVISORY-BEHAVIOR:AUTOMATIC
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20250818T112958Z
DTSTART;TZID=America/New_York:20250829T120000
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 0250829T130000
URL;TYPE=URI:/news/calendar/events/luqin
 g-zhu-phd-dissertation-presentation-fpe
Luqing Zhu - PhD Dissertation Presentation (FPE)
Fire Protection Engineering Department\nPhDDissertation Presentation\nFriday, August 29, 2025\n12:
 00 p.m. 鈥?2:00 pm\n50 Prescott Street, Gateway II, Room 1226\nZoom link:
 https://wpi.zoom.us/j/6618555176 \nLuqing Zhu\nPh.D. Candidate in Fire Pro
 tection Engineering\nSpot Ignition of Structural Fuels by Firebrand\nAccum
 ulations\nFirebrand spotting is known as an important wildfire spread mech
 anism in both wildland and wildland-urban interface (WUI) fires over the p
 ast few decades. During this process, firebrands arelofted by plumes andtr
 ansported downwind,where they may ignite receptive fuels (wildland fuels o
 r structures) both near and far away from the flame front. When firebrands
  landnearbyand accumulate into groups or piles, they can act as a more com
 petent ignition source compared to single firebrands. The researchpresente
 d in this dissertation focuses on characterizing airborne firebrands prior
  to the accumulation process and analyzing the capabilities of a group of 
 firebrands to cause spot ignition of structural materials.\nThe first goal
  aims to bridge the diagnostic gap in measuring physical and thermal prope
 rties of flying firebrands generated from burning natural vegetation throu
 gh an optical methodology. It is a crucial step toward predicting and mode
 ling where firebrands will accumulate and in what concentrations, with imp
 ortant characteristics such as their size and temperature indicative of th
 eir ignition potential. The second goal focuses on studying how close fire
 brands need to be for acting as a group with enhanced heating ability. The
  importance of cooperative spot ignition effect due to proximity of two id
 ealized firebrands was elucidated through experiments and numerical pyroly
 sis modeling.The last goal further focuses on analyzing the ignitionabilit
 y ofglowing firebrand groups (more than two) by considering a broader para
 meter space (wind, firebrand size, and accumulation density) with finer re
 solutions. Theoretical models werepresented to account for thecomplexburni
 ng and spotting behaviors of firebrands within well-characterized accumula
 tions.\nCommittee members:\nProf. James Urban (Advisor, Assistant Professo
 r)\nWorcester Polytechnic Institute\nProf. Albert Simeoni (Professor)\nWor
 cester Polytechnic Institute\nProf. Michael Gollner (Associate Professor)\
 nUniversity of California, Berkeley\nProf. Rory Hadden (Professor)\nThe Un
 iversity of Edinburgh\n
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