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UID:0-5@aerospace.technion.ac.il

DTSTART:20221026T133000Z

DTEND:20221026T143000Z

DTSTAMP:20221030T083455Z

URL:https://aerospace.technion.ac.il/events/sample-event/

SUMMARY:Numerical Investigation on a Cavity-Based Scramjet Model: Lessons L
 earnt and Challenges
DESCRIPTION:Lecturer:Dr. Donggang Cao\n Faculty:Department of Aerospace Eng
 ineering\n Institute:Technion – Israel Institute of Technology\n Locatio
 n:Classroom 165\, ground floor\, Library\, Aerospace Eng.\n Zoom: https://
 technion.zoom.us/j/99650193751?pwd=WGxTUFNvMzVLeEpCRmd6eWtDSUdHdz09\n Abst
 ract: The scramjet engine has been identified as one of the most promising
  propulsion systems for hypersonic vehicles. The flow in the scramjet rema
 ins supersonic with a typical residence time of 1 millisecond. Short time 
 scales and the coupling of multiple physics yield a complex flow field in 
 which the flame kernels morph into a reacting vortex ring upon interaction
  with the supersonic flow\, making mixing enhancement\, ignition\, and fla
 me stabilization major challenges in the development of scramjet engines.\
 n\nA cavity-based scramjet model was designed and a test facility was buil
 t accordingly at Technion-Israel Institute of Technology. Meanwhile\, the 
 simulation strategy of the scramjet model was set up using a hybrid RANS/L
 ES method based OpenFOAM\, which is an open source CFD toolbox. Both exper
 imental and numerical efforts have been made to investigate the combustion
  characteristics in the scramjet. In this talk\, the complementary results
  of both approaches will be presented to explore the rich physics in the f
 low field of the scramjet. We propose a new method to divide the flow fiel
 d into different regions and decompose the combustion into different modes
  by using filter functions. The focus is placed on the links among the fue
 l injection schemes\, flame stabilization locations\, combustion modes\, a
 nd vorticity transport behaviors in the scramjet. The lessons we’ve lear
 nt and challenges we’re facing will be summarized\n Details: \n Dr. Dong
 gang Cao\nPost Doc under the supervision of Asst. Prof. Dan Michaels\nDepa
 rtment of Aerospace Engineering\nTechnion – Israel Institute of Technolo
 gy
CATEGORIES:Seminars
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng.

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