Sedimentation of Two Side-by-Side Heavy Particles of Different Density in a Shear-Thinning Fluid with Viscoelastic Properties
Particle sedimentation has widely existed in nature and engineering fields, and most carrier fluids are non-Newtonian. Recently, the manipulation of a settling particle in liquid has been a topic of high interest to those involved in engineered processes such as composite materials, pharmaceutical m...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-07-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/11/15/7113 |
| _version_ | 1797525800557215744 |
|---|---|
| author | Sensen Yang Chengxu Tu Minglu Dai Xianfu Ge Rongjun Xu Xiaoyan Gao Fubing Bao |
| author_facet | Sensen Yang Chengxu Tu Minglu Dai Xianfu Ge Rongjun Xu Xiaoyan Gao Fubing Bao |
| author_sort | Sensen Yang |
| collection | DOAJ |
| description | Particle sedimentation has widely existed in nature and engineering fields, and most carrier fluids are non-Newtonian. Recently, the manipulation of a settling particle in liquid has been a topic of high interest to those involved in engineered processes such as composite materials, pharmaceutical manufacture, chemistry and the petroleum industry. Compared with Newtonian fluid, the viscosity of non-Newtonian fluid is closely related to the shear rate, leading to a single settling particle having different dynamic behaviors. In this article, the trajectories and velocities of two side-by-side particles of different densities (heavy and light) settling in a shear-thinning fluid with viscoelastic property were studied, as well as that for the corresponding single settling particle. Regardless of the difference in the particle density, the results show the two-way coupling interaction between the two side-by-side settling particles. As opposed to a single settling particle, the wake of the heavier particle can clearly attract or rebound the light particle due to the shear-thinning or viscoelastic property of the fluid. Regarding the trajectories of the light particle, three basic path types were found: (i) the light particle is first attracted and then repelled by the wake of the heavy one; (ii) the light particle approaches and then largely traces within the path of the heavy one in the limited field of view; (iii) the light particle is first slightly shifted away from its original position and then returns to this initial position. In addition to this, due to the existence of a corridor of reduced viscosity and negative wake generated by the viscoelastic property, the settling velocity of a light particle can exceed the terminal velocity of a single particle of the same density. On the other hand, the sedimentation of the light particle can induce the distinguishable transverse migration of the heavy one. |
| first_indexed | 2024-03-10T09:18:08Z |
| format | Article |
| id | doaj.art-b1c7c5563160411d9abf44bba5de65b1 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T09:18:08Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-b1c7c5563160411d9abf44bba5de65b12023-11-22T05:24:37ZengMDPI AGApplied Sciences2076-34172021-07-011115711310.3390/app11157113Sedimentation of Two Side-by-Side Heavy Particles of Different Density in a Shear-Thinning Fluid with Viscoelastic PropertiesSensen Yang0Chengxu Tu1Minglu Dai2Xianfu Ge3Rongjun Xu4Xiaoyan Gao5Fubing Bao6Zhejiang Provincial Key Laboratory of Flow Measurement Technology, China Jiliang University, Hangzhou 310018, ChinaZhejiang Provincial Key Laboratory of Flow Measurement Technology, China Jiliang University, Hangzhou 310018, ChinaZhejiang Provincial Key Laboratory of Flow Measurement Technology, China Jiliang University, Hangzhou 310018, ChinaZhejiang Machinery & Electrical Group Co., Ltd., Hangzhou 310002, ChinaZhejiang Provincial Key Laboratory of Flow Measurement Technology, China Jiliang University, Hangzhou 310018, ChinaZhejiang Provincial Key Laboratory of Flow Measurement Technology, China Jiliang University, Hangzhou 310018, ChinaZhejiang Provincial Key Laboratory of Flow Measurement Technology, China Jiliang University, Hangzhou 310018, ChinaParticle sedimentation has widely existed in nature and engineering fields, and most carrier fluids are non-Newtonian. Recently, the manipulation of a settling particle in liquid has been a topic of high interest to those involved in engineered processes such as composite materials, pharmaceutical manufacture, chemistry and the petroleum industry. Compared with Newtonian fluid, the viscosity of non-Newtonian fluid is closely related to the shear rate, leading to a single settling particle having different dynamic behaviors. In this article, the trajectories and velocities of two side-by-side particles of different densities (heavy and light) settling in a shear-thinning fluid with viscoelastic property were studied, as well as that for the corresponding single settling particle. Regardless of the difference in the particle density, the results show the two-way coupling interaction between the two side-by-side settling particles. As opposed to a single settling particle, the wake of the heavier particle can clearly attract or rebound the light particle due to the shear-thinning or viscoelastic property of the fluid. Regarding the trajectories of the light particle, three basic path types were found: (i) the light particle is first attracted and then repelled by the wake of the heavy one; (ii) the light particle approaches and then largely traces within the path of the heavy one in the limited field of view; (iii) the light particle is first slightly shifted away from its original position and then returns to this initial position. In addition to this, due to the existence of a corridor of reduced viscosity and negative wake generated by the viscoelastic property, the settling velocity of a light particle can exceed the terminal velocity of a single particle of the same density. On the other hand, the sedimentation of the light particle can induce the distinguishable transverse migration of the heavy one.https://www.mdpi.com/2076-3417/11/15/7113particle sedimentationtwo side-by-side particlesviscoelastic fluidshear-thinning fluid |
| spellingShingle | Sensen Yang Chengxu Tu Minglu Dai Xianfu Ge Rongjun Xu Xiaoyan Gao Fubing Bao Sedimentation of Two Side-by-Side Heavy Particles of Different Density in a Shear-Thinning Fluid with Viscoelastic Properties Applied Sciences particle sedimentation two side-by-side particles viscoelastic fluid shear-thinning fluid |
| title | Sedimentation of Two Side-by-Side Heavy Particles of Different Density in a Shear-Thinning Fluid with Viscoelastic Properties |
| title_full | Sedimentation of Two Side-by-Side Heavy Particles of Different Density in a Shear-Thinning Fluid with Viscoelastic Properties |
| title_fullStr | Sedimentation of Two Side-by-Side Heavy Particles of Different Density in a Shear-Thinning Fluid with Viscoelastic Properties |
| title_full_unstemmed | Sedimentation of Two Side-by-Side Heavy Particles of Different Density in a Shear-Thinning Fluid with Viscoelastic Properties |
| title_short | Sedimentation of Two Side-by-Side Heavy Particles of Different Density in a Shear-Thinning Fluid with Viscoelastic Properties |
| title_sort | sedimentation of two side by side heavy particles of different density in a shear thinning fluid with viscoelastic properties |
| topic | particle sedimentation two side-by-side particles viscoelastic fluid shear-thinning fluid |
| url | https://www.mdpi.com/2076-3417/11/15/7113 |
| work_keys_str_mv | AT sensenyang sedimentationoftwosidebysideheavyparticlesofdifferentdensityinashearthinningfluidwithviscoelasticproperties AT chengxutu sedimentationoftwosidebysideheavyparticlesofdifferentdensityinashearthinningfluidwithviscoelasticproperties AT mingludai sedimentationoftwosidebysideheavyparticlesofdifferentdensityinashearthinningfluidwithviscoelasticproperties AT xianfuge sedimentationoftwosidebysideheavyparticlesofdifferentdensityinashearthinningfluidwithviscoelasticproperties AT rongjunxu sedimentationoftwosidebysideheavyparticlesofdifferentdensityinashearthinningfluidwithviscoelasticproperties AT xiaoyangao sedimentationoftwosidebysideheavyparticlesofdifferentdensityinashearthinningfluidwithviscoelasticproperties AT fubingbao sedimentationoftwosidebysideheavyparticlesofdifferentdensityinashearthinningfluidwithviscoelasticproperties |