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| A fully improved second order scheme for QDS method and its application |
| Received:April 22, 2012 Revised:August 25, 2012 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201304013 |
| KeyWord:QDS method Euler solver a fully improved second order scheme computing efficiency slope limiters |
| Author | Institution |
| 李晓鹏 |
中国科学院 力学研究所 高温气体动力学国家重点实验室,北京 |
| 程迪 |
中国科学院 力学研究所 高温气体动力学国家重点实验室,北京 |
| 齐力 |
中国科学院 力学研究所 高温气体动力学国家重点实验室,北京 |
| 李龙 |
中国科学院 力学研究所 高温气体动力学国家重点实验室,北京 |
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| Abstract: |
| The QDS (Quiet Direct Simulation) method for Euler fluid is introduced.As the most important part,the current method extends the previous Euler solver developed by Albright and M.R.Smith mainly by three aspects:(1) The gradients (density,temperature,velocity) are calculated when updating the grid properties of mass,momentum and energy from the individual particle at the third step in the QDS method,hence a fully improved second order scheme.(2) A kind of new process for updating the grid properties from the individual particle is developed,which cut down the times for the most part to seek the total particles,thus improving the computing efficiency signally.(3) Several slope limiters are employed in the second scheme and their performances are tested. |
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