IMECH-IR  > 力学所知识产出(1956-2008)
论简化Navier-Stokes方程组(SNSE)
高智
Source Publication中国科学A辑
1987
Issue10Pages:1058-1070
ISSN1006-9232
Abstract本文论述简化 Navier-Stokes 方程组(SNSE),利用十种 SNSE分析Jeffery-Hamel流动并简要分析已知完全 Navier-Stokes 方程组(CNSE)精确解的八类流动。表明:不同SNSE结果之间的实际差异能够大大超出O(Re~(-1/2))量级的理论误差范围,甚至给出不同的流动图案。因此,SNSE 的粘性项如何取舍值得重视。内外层匹配SNSE和薄层二阶SNSE的解在八类流动情况下均与CNSE的精确解完全一致;而所有其它SNSE 的解则与CNSE的精确解不完全一致,它们的解在不少情况下实际就是经典边界层理论的解。内外层匹配SNSE包含了法向轴相对流向轴剪切的剪应力项和法向轴伸缩的法应力项以及与该法应力项同量级的粘性项,且对惯性项和粘性-惯性项相互关系的处理较合理,故在力学上和数学上都比较可取。
KeywordNavier-stokes方程组 精确解 粘性项 边界层理论 速度分布 积分解 粘性层 内外层 薄层近似
Language中文
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/37016
Collection力学所知识产出(1956-2008)
Corresponding Author高智
Recommended Citation
GB/T 7714
高智. 论简化Navier-Stokes方程组(SNSE)[J]. 中国科学A辑,1987,10,:1058-1070.
APA 高智.(1987).论简化Navier-Stokes方程组(SNSE).中国科学A辑(10),1058-1070.
MLA 高智."论简化Navier-Stokes方程组(SNSE)".中国科学A辑 .10(1987):1058-1070.
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