| 项目编号: | 1511787
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| 项目名称: | UNS: Dynamics and Rheology of Concentrated Suspensions of Rigid Rods: Effects of Confinement |
| 作者: | Jason Butler
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| 承担单位: | University of Florida
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| 批准年: | 2014
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| 开始日期: | 2015-08-01
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| 结束日期: | 2018-07-31
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| 资助金额: | USD301678
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Engineering - Chemical, Bioengineering, Environmental, and Transport Systems
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| 英文关键词: | confinement
; rod
; effect
; project
; suspension
; concentrated suspension
; rheology
; rigid rod
; concentrated fiber suspension
; fluid rheology
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| 英文摘要: | CBET - 1511787
PI: Jason Butler
Fibers often are added to materials to provide extra strength and improve lifetime. However, adding fibers to a material complicates processing, because the fibers cause changes in the physical properties of the material during flow. This project will conduct experiments and computer simulations of the flow behavior of suspensions of rigid rods in a viscous liquid. The project will examine concentrated suspensions where the rods interact with each other during flow. Furthermore, the project will focus on the effects of nearby bounding walls on the structure and physical properties of the suspension. Results of the project will provide information that engineers who process fibrous materials can use in process design to enhance material properties. The project will provide research training for graduate students, research involvement for interested undergraduates, and opportunities to enhance international collaborations through established initiatives at the University of Florida.
The rheology of concentrated fiber suspensions will be studied experimentally in a series of devices. To examine effects of confinement, the distance between bounding walls in the devices will be varied. The effects of nearby walls on the microstructure of the suspension will be determined by imaging the rods. Changes in the microstructure due to confinement will be correlated with changes in fluid rheology. Experimental measurements will be compared to simulations with periodic boundary condition or with bounding walls to examine connections between microstructure, confinement, and rheology. In addition to clarifying the influence of confinement, the project will identify the physical mechanisms that control structure and dynamics of concentrated suspensions of rods. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/93911
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Jason Butler. UNS: Dynamics and Rheology of Concentrated Suspensions of Rigid Rods: Effects of Confinement. 2014-01-01.
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