Numerical Simulation of Mixing Fluid with Ferrofluid in a Magnetic Field Using the Meshless SPH Method
In this study, a numerical investigation of the effect of different magnetic fields on ferrofluid-fluid mixing processes in a two-dimensional microchannel is performed An improved version of smoothed particle hydrodynamics, SPH, by shifting particle algorithm and dummy particle boundary condition, i...
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| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Fluids |
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| Online Access: | https://www.mdpi.com/2311-5521/7/11/341 |
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| author | Mohsen Abdolahzadeh Ali Tayebi Mehrdad Ahmadinejad Božidar Šarler |
| author_facet | Mohsen Abdolahzadeh Ali Tayebi Mehrdad Ahmadinejad Božidar Šarler |
| author_sort | Mohsen Abdolahzadeh |
| collection | DOAJ |
| description | In this study, a numerical investigation of the effect of different magnetic fields on ferrofluid-fluid mixing processes in a two-dimensional microchannel is performed An improved version of smoothed particle hydrodynamics, SPH, by shifting particle algorithm and dummy particle boundary condition, is implemented to solve numerical continuity, ferrohydrodynamics-based momentum and mass transfer equations. SPH is formulated through the irregular arrangement of the nodes where the fields are approximated using the fifth-order Wendland kernel function. After validating the computational approach, the influence of the number (from one to three) of parallel electrical wires positioned perpendicular to the microchannel on the mixing efficiency is studied for the first time. It has originally been found that the mixing efficiency highly non-linearly depends on the Reynolds number and the number of electrical wires. For <i>Re</i> ≤ 20 the mixing efficiency is almost the same for two and three electrical wires and about two times higher than one electrical wire. For <i>Re</i> ≥ 80, the mixing efficiency of three wires is much higher than one and two electrical wires. Optimum performance of the micromixer is achieved with three electrical wires, since the mixer performs well on a broader range of <i>Re</i> than the other two studied cases. The outcomes of this study, obtained by a meshless method, are important for the industrial design of micromixers. |
| first_indexed | 2024-03-09T19:05:07Z |
| format | Article |
| id | doaj.art-12472e3250ae40dab6ad0e407db3733c |
| institution | Directory Open Access Journal |
| issn | 2311-5521 |
| language | English |
| last_indexed | 2024-03-09T19:05:07Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fluids |
| spelling | doaj.art-12472e3250ae40dab6ad0e407db3733c2023-11-24T04:38:36ZengMDPI AGFluids2311-55212022-10-0171134110.3390/fluids7110341Numerical Simulation of Mixing Fluid with Ferrofluid in a Magnetic Field Using the Meshless SPH MethodMohsen Abdolahzadeh0Ali Tayebi1Mehrdad Ahmadinejad2Božidar Šarler3Faculty of Mechanical Engineering, University of Ljubljana, Aškerčeva cesta 6, 1000 Ljubljana, SloveniaDepartment of Mechanical Engineering, Yasouj University, Yasouj 75918-74831, IranDepartment of Mechanical Engineering, Yasouj University, Yasouj 75918-74831, IranFaculty of Mechanical Engineering, University of Ljubljana, Aškerčeva cesta 6, 1000 Ljubljana, SloveniaIn this study, a numerical investigation of the effect of different magnetic fields on ferrofluid-fluid mixing processes in a two-dimensional microchannel is performed An improved version of smoothed particle hydrodynamics, SPH, by shifting particle algorithm and dummy particle boundary condition, is implemented to solve numerical continuity, ferrohydrodynamics-based momentum and mass transfer equations. SPH is formulated through the irregular arrangement of the nodes where the fields are approximated using the fifth-order Wendland kernel function. After validating the computational approach, the influence of the number (from one to three) of parallel electrical wires positioned perpendicular to the microchannel on the mixing efficiency is studied for the first time. It has originally been found that the mixing efficiency highly non-linearly depends on the Reynolds number and the number of electrical wires. For <i>Re</i> ≤ 20 the mixing efficiency is almost the same for two and three electrical wires and about two times higher than one electrical wire. For <i>Re</i> ≥ 80, the mixing efficiency of three wires is much higher than one and two electrical wires. Optimum performance of the micromixer is achieved with three electrical wires, since the mixer performs well on a broader range of <i>Re</i> than the other two studied cases. The outcomes of this study, obtained by a meshless method, are important for the industrial design of micromixers.https://www.mdpi.com/2311-5521/7/11/341mixing processferrofluidmagnetic fieldactive micromixerSPH |
| spellingShingle | Mohsen Abdolahzadeh Ali Tayebi Mehrdad Ahmadinejad Božidar Šarler Numerical Simulation of Mixing Fluid with Ferrofluid in a Magnetic Field Using the Meshless SPH Method Fluids mixing process ferrofluid magnetic field active micromixer SPH |
| title | Numerical Simulation of Mixing Fluid with Ferrofluid in a Magnetic Field Using the Meshless SPH Method |
| title_full | Numerical Simulation of Mixing Fluid with Ferrofluid in a Magnetic Field Using the Meshless SPH Method |
| title_fullStr | Numerical Simulation of Mixing Fluid with Ferrofluid in a Magnetic Field Using the Meshless SPH Method |
| title_full_unstemmed | Numerical Simulation of Mixing Fluid with Ferrofluid in a Magnetic Field Using the Meshless SPH Method |
| title_short | Numerical Simulation of Mixing Fluid with Ferrofluid in a Magnetic Field Using the Meshless SPH Method |
| title_sort | numerical simulation of mixing fluid with ferrofluid in a magnetic field using the meshless sph method |
| topic | mixing process ferrofluid magnetic field active micromixer SPH |
| url | https://www.mdpi.com/2311-5521/7/11/341 |
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