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Numerical simulation of hydrogen combustion on flow field in supersonic combustor with cavity(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2008年01期
Page:
12-16
Research Field:
研究与设计
Publishing date:

Info

Title:
Numerical simulation of hydrogen combustion on flow field in supersonic combustor with cavity
Author(s):
Yang Shimin; Tang Hao; Huang Yue
College of Energy and Power Engineering，NUAA，Nanjing 210016，China
Keywords:
scramjet; combustion chamber; numerical simulation; cavity structure; fuel injec— fion scheme
PACS:
V235.211
DOI:
-
Abstract:
The flow fields of hydrogen burning in scramjet combustion chamber witlI length depth ratio cavities were simulated numerically by using the element—-conservation Navier—-Stokes equations with the RNG k—e two—equation turbulence model．The injection schemes are cavity up— stream injection with front wall．bottom and back wall injection assisted．The fuel burning features for different injection schemes were analyzed．The conclusions are as follows：the cavity is the primary area of flame holding；upstream cavity injection of the hydrogen call finish the process of mixing and burning；the assistant injections can affect the flow fields．When adding the injection on front wall and bottom of cavity，the flame holding is not enhanced，and the burning case is scarcely changed；When adding the injection on the back of cavity．it increases the fuel in cavity and strengthens the circumfluence effect．the affect to burning case is obvious．’11le flow fields features are not radically changed by the three assistant injection schemes．

References:

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Last Update: 1900-01-01