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UID:0-1183@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20250929T133000

DTEND;TZID=Asia/Jerusalem:20250929T143000

DTSTAMP:20250916T081303Z

URL:https://aerospace.technion.ac.il/events/linear-stability-analysis-of-t
 he-quasi-one-dimensional-flow-in-a-scramjet-engine/

SUMMARY:Linear Stability Analysis of the Quasi-One-Dimensional Flow in a Sc
 ramjet Engine
DESCRIPTION:Lecturer:Shahaf Haiman \n Faculty:The Stephen B. Klein Faculty 
 of Aerospace Engineering at the Technion \n Institute:Technion – Israel 
 Institute of Technology\n Location:Classroom 165\, ground floor\, Library\
 , Aerospace Eng.\n Zoom: https://technion.zoom.us/j/99134371569\n Abstract
 : \n\n\nThis study presents a linear stability analysis of the flow within
  a dual-mode scramjet engine. The flow is assumed to be compressible\, inv
 iscid and quasi-one-dimensional\, and the effects of area variation\, wall
  friction\, and distributed heat addition are considered. Unlike previous 
 models that rely on asymptotic expansions about zero perturbation frequenc
 y\, in this work the full linearized quasi-one-dimensional Euler equations
  are solved. Consequently\, the spatial distributions of the flow disturba
 nces throughout the entire scramjet domain are obtained and examined. Both
  modes of scramjet operation are analyzed – scram (supersonic throughout
 ) and ram (thermally choked with an upstream shock wave)\, in contrast to 
 the traditionally investigated choking due to geometric constraint. The no
 nlinear base flow\, including the locations of the shock and the effective
  throat\, is solved using a multi-domain spectral collocation method in co
 njunction with the shock-fitting approach\, which is also applied to the l
 inear perturbation equations. The analysis reveals that the energy of entr
 opy\, fast acoustic\, and slow acoustic disturbances may grow downstream\,
  particularly in regions of high heat release. Perturbations in the shock 
 position and effective throat location are also quantified.\n\n\n\n Detail
 s: \n 
CATEGORIES:Seminars,סמינרים
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng.

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