| 题名 | Decay rate of homogeneous isotropic turbulence laden with finite-size particles |
| 作者 | |
| 通讯作者 | Peng, Cheng |
| 发表日期 | 2024-09-13
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| DOI | |
| 发表期刊 | |
| ISSN | 0022-1120
|
| EISSN | 1469-7645
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| 卷号 | 993 |
| 摘要 | This study conducts particle-resolved direct numerical simulations to analyse how finite-size spherical particles affect the decay rate of turbulent kinetic energy in non-sustained homogeneous isotropic turbulence. The decaying particle-laden homogeneous isotropic turbulence is generated with two set-ups, i.e. (1) releasing particles into a single-phase decaying homogeneous isotropic turbulence and (2) switching off the driving force of a sustained particle-laden homogeneous isotropic turbulence. With both set-ups, the decay of turbulent kinetic energy follows a power-law when the flow is fully relaxed, similar to their single-phase counterparts. The dependence of the power-law decay exponent n on the particle-to-fluid density ratio, particle size and volume fraction is also investigated, and a predictive model is developed. We find that the presence of heavier particles slows down the long-time power-law decay exponent. |
| 关键词 | |
| 相关链接 | [来源记录] |
| 收录类别 | |
| 语种 | 英语
|
| 学校署名 | 其他
|
| 资助项目 | National Natural Science Foundation of China["12102232","U2241269","T2250710183","U2006221","52176040"]
; Natural Science Foundation of Shandong Province, China["ZR2021QA010","2022HWYQ-023"]
|
| WOS研究方向 | Mechanics
; Physics
|
| WOS类目 | Mechanics
; Physics, Fluids & Plasmas
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| WOS记录号 | WOS:001310803900001
|
| 出版者 | |
| 来源库 | Web of Science
|
| 引用统计 |
被引频次[WOS]：1
|
| 成果类型 | 期刊论文 |
| 条目标识符 | http://sustech.caswiz.com/handle/2SGJ60CL/834258 |
| 专题 | 工学院_力学与航空航天工程系 南方科技大学 |
| 作者单位 | 1.Shandong Univ, Sch Mech Engn, Key Lab High Efficiency & Clean Mech Manufacture, Minist Educ, Jinan 250061, Peoples R China 2.Southern Univ Sci & Technol, Ctr Complex Flows & Soft Matter Res, Guangdong Prov Key Lab Turbulence Res & Applicat, Shenzhen 518055, Guangdong, Peoples R China 3.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518055, Guangdong, Peoples R China 4.Zhejiang Sci Tech Univ, Sch Mech Engn, Hangzhou 310018, Peoples R China |
| 推荐引用方式 GB/T 7714 |
Sun, Qichao,Peng, Cheng,Wang, Lian-Ping,et al. Decay rate of homogeneous isotropic turbulence laden with finite-size particles[J]. JOURNAL OF FLUID MECHANICS,2024,993.
|
| APA |
Sun, Qichao,Peng, Cheng,Wang, Lian-Ping,Chen, Songying,&Zhu, Zuchao.(2024).Decay rate of homogeneous isotropic turbulence laden with finite-size particles.JOURNAL OF FLUID MECHANICS,993.
|
| MLA |
Sun, Qichao,et al."Decay rate of homogeneous isotropic turbulence laden with finite-size particles".JOURNAL OF FLUID MECHANICS 993(2024).
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| 条目包含的文件 | 条目无相关文件。 | |||||
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