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UID:0-215@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20220207T163000

DTEND;TZID=Asia/Jerusalem:20220207T173000

DTSTAMP:20230403T122448Z

URL:https://aerospace.technion.ac.il/events/generation-of-skeletal-chemica
 l-mechanisms-of-liquid-hydrocarbon-fuels-for-cfd-applications/

SUMMARY:Generation of Skeletal Chemical Mechanisms of Liquid Hydrocarbon Fu
 els for CFD Applications
DESCRIPTION:Lecturer:Alon Naor\n Faculty:Department of Aerospace Engineerin
 g\n Institute:Technion – Israel Institute of Technology\n Location:https
 ://technion.zoom.us/j/99956478137\n Zoom: \n Abstract: \n Details: \n This
  work suggests and demonstrates a method for generating reduced chemical k
 inetic mechanisms for aviation fuels. Small but accurate mechanisms are ne
 eded for use in Computational Fluid Dynamics (CFD) combustion applications
 \, saving complex and expensive lab experiments. The focus is on the abili
 ty to predict flame stabilization in premixed pre-vaporized gas turbine co
 mbustors on elevated pressures and high temperature conditions\, which des
 cribe practical combustion. Initially\, the Reaction Mechanism Generator i
 s used for generating a detailed mechanism at compositions and conditions 
 of interest\, for which experimental data may be limited or nonexistent. S
 ubsequently\, a path flux analysis algorithm is used to generate reduced m
 echanisms with different numbers of species.  Finally\, laminar premixed 
 flame\, opposed jet premixed flame\, and auto-ignition calculations are us
 ed to select the smallest mechanism with an acceptable error. The method w
 as implemented to generate reduced mechanisms of key fuel components - pro
 pane\, n-dodecane\, methyl-cyclo-hexane\, and surrogate of JP-8 aviation f
 uel at an elevated pressure of 20 atm. The work includes validations with 
 the limited available experimental data and sensitivity analyses. The redu
 ced mechanisms presented satisfactory performances compared to existing on
 es\, despite their much smaller size. With the suggested process\, one can
  generate new skeletal chemical mechanisms which predict quite well the co
 mbustion phenomena of interest at the actual combustor conditions. This is
  especially useful when relevant experimental data is not available for mo
 del optimization. The new approach can be used to improve the representati
 on of the chemical kinetic process of real jet fuels in CFD simulations.\n
 Zoom Meeting
CATEGORIES:Seminars
LOCATION:https://technion.zoom.us/j/99956478137

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