Structure function of helicity in compressible homogeneous isotropic turbulence
文献类型：期刊论文
| 作者 | Hu RN(胡润宁); Yan, Zheng; Gan RY(甘润园); Li XL(李新亮); Yu ZP(于长平) |
| 刊名 | PHYSICAL REVIEW FLUIDS
 |
| 出版日期 | 2025-03-28 |
| 卷号 | 10期号:3页码:15 |
| ISSN号 | 2469-990X |
| DOI | 10.1103/PhysRevFluids.10.034610 |
| 通讯作者 | Yu, Changping(cpyu@imech.ac.cn) |
| 英文摘要 | Helicity plays an essential role in the interscale dynamics of turbulence. This paper focuses on the compressible effects on helicity cascades via structure functions. We first investigate the spatial-local dynamics of helicity, revealing that helicity is enhanced by pressure gradients along vorticity lines. Then, structure functions are used to describe the multiscale dynamics. The scaling law r(2/3) for helicity remains valid in compressible turbulence, as helicity is independent of the compressive components. Additional pressure and divergence terms are introduced in the new third-order relation for helicity in compressible turbulence. The pressure term is related to the pressure gradients along the vorticity lines and plays a dominant role in the dissipative range. The divergence term is mainly induced by the mixed structure function of divergence and helicity, significantly contributing to inverse helicity cascades in the inertial range. |
| 分类号 | 二类 |
| WOS关键词 | STATISTICS |
| 资助项目 | National Natural Science Foundation of China[12472229] ; National Natural Science Foundation of China[12072349] ; National Natural Science Foundation of China[12232018] ; National Natural Science Foundation of China[91852203] ; National Natural Science Foundation of China[12202457] ; National Key Research and Development Program of China[2020YFA0711800] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001460940700001 |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China |
| 其他责任者 | 于长平 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/100816]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Hu RN,Yan, Zheng,Gan RY,et al. Structure function of helicity in compressible homogeneous isotropic turbulence[J]. PHYSICAL REVIEW FLUIDS,2025,10(3):15. |
| APA | 胡润宁,Yan, Zheng,甘润园,李新亮,&于长平.(2025).Structure function of helicity in compressible homogeneous isotropic turbulence.PHYSICAL REVIEW FLUIDS,10(3),15. |
| MLA | 胡润宁,et al."Structure function of helicity in compressible homogeneous isotropic turbulence".PHYSICAL REVIEW FLUIDS 10.3(2025):15. |
入库方式： OAI收割
来源：力学研究所
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