한국전산유체공학회:학술대회논문집
- 한국전산유체공학회 1999년도 추계 학술대회논문집
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- Pages.59-64
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- 1999
근사 화학반응 자코비안을 이용한 화학반응 유동해석
Approximate Chemical Jacobian Methods for Reactive Flow Simulations
- 발행 : 1999.11.01
초록
The Equations of Chemical kinetics ate very stiff, which forces the use of an implicit scheme. The problem of implicit scheme, however, is that the jacobian must be solved at each time step. In this paper, we examined the approximate chemical jacobian methods such as Gauss-Seidel, Jacobi partial jacobian and diagonalized jacobian that can be stable without full jacobian, We show that Gauss-Seidel jacobian method is stable and accurate as well as full jacobian and that this is more efficient in supersonic combustion problem about
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