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充分发展的QDS方法二阶格式及其应用
Alternative TitleA fully improved second order scheme for QDS method and its application
李晓鹏; 程迪; 齐力; 李龙
Source Publication计算力学学报
2013-08
Volume30Issue:4Pages:532-537
ISSN1007-4708
Abstract介绍了QDS方法Euler求解器的基本思路,并从以下三个方面做了改进:(1)在统计网格宏观量时,考虑了相邻网格内流动量的梯度,发展成了二阶格式,使得在QDS算法中的粒子重构和网格宏观量统计都达到二阶格式,由此为充分发展的二阶格式;(2)在进行网格宏观量统计时,提出将按网格进行宏观量统计修改为按粒子位置更新网格宏观量,减少了对粒子进行遍历的次数,大大提高了计算效率;(3)在改进后的二阶格式中引进了斜率限制器,比较了不同斜率限制器的效果。
Other AbstractThe 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.
KeywordQds方法 Euler求解器 充分发展的二阶格式 计算效率 斜率限制器
Subject Area计算流体力学
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Indexed ByCSCD
Language中文
Funding Organization国家自然基金重大研究计划重点支持(91016005);国家自然科学基金创新群体(10621202)资助项目
CSCD IDCSCD:4942882
DepartmentLHD超声速燃烧
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/47392
Collection高温气体动力学国家重点实验室
Corresponding Author李晓鹏
Recommended Citation
GB/T 7714
李晓鹏,程迪,齐力,等. 充分发展的QDS方法二阶格式及其应用[J]. 计算力学学报,2013,30(4):532-537.
APA 李晓鹏,程迪,齐力,&李龙.(2013).充分发展的QDS方法二阶格式及其应用.计算力学学报,30(4),532-537.
MLA 李晓鹏,et al."充分发展的QDS方法二阶格式及其应用".计算力学学报 30.4(2013):532-537.
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