| 题名 | Extraction of the translational Eucken factor from light scattering by molecular gas |
| 作者 | |
| 通讯作者 | Wu，Lei |
| 发表日期 | 2020
|
| DOI | |
| 发表期刊 | |
| ISSN | 0022-1120
|
| EISSN | 1469-7645
|
| 卷号 | 901 |
| 摘要 | Although the thermal conductivity of molecular gases can be measured straightforwardly and accurately, it is difficult to experimentally determine its separate contributions from the translational and internal motions of gas molecules. Yet, this information is critical in rarefied gas dynamics as the rarefaction effects corresponding to these motions are different. In this paper, we propose a novel methodology to extract the translational thermal conductivity (or equivalently, the translational Eucken factor) of molecular gases from the Rayleigh-Brillouin scattering (RBS) experimental data. From the numerical simulation of the Wu et al. (J. Fluid Mech., vol. 763, 2015, pp. 24-50) model we find that, in the kinetic regime, in addition to bulk viscosity, the RBS spectrum is sensitive to the translational Eucken factor, even when the total thermal conductivity is fixed. Thus it is not only possible to extract the bulk viscosity, but also the translational Eucken factor of molecular gases from RBS light scattering spectra measurements. Such experiments bear the additional advantage that gas-surface interactions do not affect the measurements. By using the Wu et al. model, bulk viscosities (due to the rotational relaxation of gas molecules only) and translational Eucken factors of, and are simultaneously extracted from RBS experiments. |
| 关键词 | |
| 相关链接 | [Scopus记录] |
| 收录类别 | |
| 语种 | 英语
|
| 学校署名 | 第一
; 通讯
|
| 资助项目 | National Natural Science Foundation of China[51876170]
; Natural Science Basic Research Plan in Shaanxi Province of China[2019JM-343]
; National Key Research and Development Project of China[2016YFB0200902]
|
| WOS研究方向 | Mechanics
; Physics
|
| WOS类目 | Mechanics
; Physics, Fluids & Plasmas
|
| WOS记录号 | WOS:000563009100001
|
| 出版者 | |
| EI入藏号 | 20203709152244
|
| EI主题词 | Molecules
; Viscosity
; Flow of gases
; Brillouin scattering
; Gas dynamics
; Thermal conductivity of gases
|
| EI分类号 | Fluid Flow, General:631.1
; Gas Dynamics:631.1.2
; Thermodynamics:641.1
; Light/Optics:741.1
; Physical Properties of Gases, Liquids and Solids:931.2
; Atomic and Molecular Physics:931.3
|
| ESI学科分类 | ENGINEERING
|
| Scopus记录号 | 2-s2.0-85090315814
|
| 来源库 | Scopus
|
| 引用统计 |
被引频次[WOS]：14
|
| 成果类型 | 期刊论文 |
| 条目标识符 | http://sustech.caswiz.com/handle/2SGJ60CL/154478 |
| 专题 | 工学院_力学与航空航天工程系 |
| 作者单位 | 1.Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,518055,China 2.School of Energy and Power Engineering,Xi'an Jiaotong University,Xi'an,710049,China 3.Department of Physics and Astronomy,LaserLaB,Vrije Universiteit,Amsterdam,De Boelelaan 1081,1081 HV,Netherlands |
| 第一作者单位 | 力学与航空航天工程系 |
| 通讯作者单位 | 力学与航空航天工程系 |
| 第一作者的第一单位 | 力学与航空航天工程系 |
| 推荐引用方式 GB/T 7714 |
Wu，Lei,Li，Qi,Liu，Haihu,et al. Extraction of the translational Eucken factor from light scattering by molecular gas[J]. JOURNAL OF FLUID MECHANICS,2020,901.
|
| APA |
Wu，Lei,Li，Qi,Liu，Haihu,&Ubachs，Wim.(2020).Extraction of the translational Eucken factor from light scattering by molecular gas.JOURNAL OF FLUID MECHANICS,901.
|
| MLA |
Wu，Lei,et al."Extraction of the translational Eucken factor from light scattering by molecular gas".JOURNAL OF FLUID MECHANICS 901(2020).
|
| 条目包含的文件 | 条目无相关文件。 | |||||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
;
修改评论