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UID:0-470@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20161116T163000

DTEND;TZID=Asia/Jerusalem:20161116T173000

DTSTAMP:20230603T191246Z

URL:https://aerospace.technion.ac.il/events/the-timnat-prize-seminar-inves
 tigation-of-flame-ignition-in-fuel-spray-systems/

SUMMARY:The Timnat Prize Seminar - Investigation of Flame Ignition in Fuel 
 Spray Systems
DESCRIPTION:Lecturer:Gershon Kats\n Faculty:Department of Aerospace Enginee
 ring\n Institute:Technion – Israel Institute of Technology\n Location:Cl
 assroom 165\, ground floor\, Library\, Aerospace Eng.\n Zoom: \n Abstract:
  \n Details: \n Understanding the spray ignition process is of utmost impo
 rtance due to the fact that modern combustors in aircraft need to be (re)-
 ignited under a wide range of (sometimes extreme) operating conditions. Si
 nce in many of these combustors spark ignition systems are installed\, the
  amount of spark energy required for successful ignition over a range of o
 perating conditions must be known. In addition\, the desire to prevent unw
 anted explosions in transportation and storage of combustibles motivates e
 xploring the mechanisms at play during the process of ignition. The presen
 ce of liquid fuel in the form of a multi-sized spray of droplets that must
  be ignited only serves to increase the difficulty of ignition.\nA new mat
 hematical analysis is presented of the ignition of a spray/air mixture by 
 an infinite heated surface. In contrast to previous work in the literature
  the entire history of the ignition process is accounted for starting from
  the flame embryo progenitor stage\, through the thermal runaway stage to 
 the final flame propagation stage. For tractability at the current stage t
 he chemical kinetics is taken to be that of a single global reaction. The 
 spray is modeled using the sectional approach and the influence of fuel sp
 ray characteristics on ignition is determined. Delay in ignition due to th
 e build-up of vapour from the fuel droplets as well as heat loss to the dr
 oplets for evaporation are found to play a role.
CATEGORIES:Seminars
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng.

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