Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Numerical Study on Characteristics of Unsteady Flows Caused by Heat Addition in a Convergent-Divergent Duct

축소-확대 유로에서의 가열에 의한 비정상 유동의 특성에 관한 연구

  • 김장우 (호서대학교 환경안전공학부) ;
  • 정진도 (호서대학교 환경안전공학부)
  • Published : 2002.06.01
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Abstract

This Paper presents numerical solutions of two-dimensional Euler equations for supersonic steady and unsteady flows with heat addition in a convergent-divergent duct, The Van Leer FVS (flux vector splitting) method in generalized coordinates is employed in order to calculate the inviscid strong shock waves caused by thermal choking. We discuss on transient characteristics, start and unstart phenomena caused by thermal choking, limit of equivalence ratio to avoid thermal choking and fluctuation of specific thrust caused by thermal choking. We prove that thermal choking is a serious problem in view of engine performance.

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References

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