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학술대회자료
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한국전산유체공학회 한국전산유체공학회 학술대회논문집 한국전산유체공학회 학술대회논문집 2001년도 춘계
발행연도
2001.5
수록면
189 - 194 (6page)

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In this paper, non-reacting and reacting flowfields were computed using a preconditioned Navier-Stokes solver. The preconditioning technique of Merkle et al. and TVD scheme of Chakravarthy and Osher was employed and the results obtained using developed code have a good agreement with the previous results and experimental data. The preconditioned Navier-Stokes equation set with low Reynolds number k-ε equation and species continuity equations, are discretized with strongly implicit manner and rime integrated with LU-SSOR scheme. For the purpose of treating unsteady problem, the duel-time stepping scheme was employed. For the validation of the code in incompressible flow regime, steady driven square cavity flow was considered and calculation result shows reasonably good agteement with the result of incompressible code. Shock wave/boundary layer interaction problem was considered to show the shock capturing performance of preconditioned-TVD scheme. To validate unsteady flow, acoustic oscillation problem was calculated, and supersonic premix flame of H₂-air reaction problem, which is calculated with turbulence model, 9-species/18-reaction step reaction model, shows reasonable agreement with the previous results. As a result, the preconditioning method has an advantage to calculate incompressible and compressible flow through one code and preconditioned solver easily developed from standard compressible code with minor efforts. But, additional computational time and computer memory is required due to preconditioning matrix.

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Abstract

1. 서론

2. 예조건화 지배방정식

3. 수치해법

4. 계산 결과

5. 결론

6. 참고문헌

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UCI(KEPA) : I410-ECN-0101-2009-422-014570911