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| Comparative study about improved WENO scheme based on characteristics splitting and Roe scheme |
| Received:November 12, 2013 Revised:January 14, 2014 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201406020 |
| KeyWord:High order/high resolution WENO scheme unsteady Roe scheme |
| Author | Institution |
| 石磊 |
中国航天空气动力技术研究院, 北京 |
| 闫溟 |
中国航天空气动力技术研究院, 北京 |
| 龚安龙 |
中国航天空气动力技术研究院, 北京 |
| 周伟江 |
中国航天空气动力技术研究院, 北京 |
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| Abstract: |
| Unphysical oscillations at shock waves and contact discontinuities are discussed in Lax's problem using WENO scheme based on characteristics splitting method.Then we improved construction variables to avoid this phenomenon.Several typical examples including Sod's problem,forward facing step and double mach reflection are calculated according unsteady Euler equation with improved WENO scheme and LU-SGS implicit time-marching method.Compared with Roe scheme,the improved WENO scheme shows higher resolution and lower diffusion. |