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Numerical investigation of igniter jet flow in step combustor

Tahsini, A. M ; Sharif University of Technology | 2007

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  1. Type of Document: Article
  2. DOI: 10.2514/6.2007-840
  3. Publisher: 2007
  4. Abstract:
  5. The dynamics of a two dimensional plane jet injected at the base of a step, parallel to the wall, in backward facing step flow geometry is studied. The objective of this work is to gain insight into the dynamics of the igniter flow field in solid fuel ramjets (SFRJ). The one equation turbulence model of Spalart and Allmaras is used. The system of governing equations is solved with a finite volume method using a structured grid in which the AUSM+ scheme is used to calculate the convective fluxes. It is shown that the wall jet drastically changes the structure of recirculating region of back-step flow. The wall shear stress caused by the wall jet is much greater than that caused by the main flow. There is also a high mixing properties behind the step which is useful for ignition process
  6. Keywords:
  7. Back-step flow ; Convective fluxes ; Combustors ; Finite volume method ; Flow fields ; Ignition ; Ramjet engines ; Shear stress ; Turbulence models ; Jets
  8. Source: 45th AIAA Aerospace Sciences Meeting 2007, Reno, NV, 8 January 2007 through 11 January 2007 ; Volume 15 , 2007 , Pages 10213-10217 ; 1563478900 (ISBN); 9781563478901 (ISBN)
  9. URL: https://arc.aiaa.org/doi/abs/10.2514/6.2007-840