Experimental and numerical investigation of a density-driven instability during a horizontal miscible displacement
We performed an experimental and numerical investigation of a convective buoyancy-driven instability that arises during the injection of a denser miscible fluid into a less dense one in a rectilinear geometry. We visualized the instability using a shadowgraph technique, and we obtained quantitative...
Elmentve itt :
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| Dokumentumtípus: | Cikk |
| Megjelent: |
2023
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| Sorozat: | PHYSICS OF FLUIDS
35 No. 6 |
| Tárgyszavak: | |
| doi: | 10.1063/5.0151757 |
| mtmt: | 34084569 |
| Online Access: | http://publicatio.bibl.u-szeged.hu/28028 |
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| 024 | 7 | |a 10.1063/5.0151757 |2 doi | |
| 024 | 7 | |a 34084569 |2 mtmt | |
| 040 | |a SZTE Publicatio Repozitórium |b hun | ||
| 041 | |a Angol | ||
| 100 | 1 | |a Yorgos Stergiou | |
| 245 | 1 | 0 | |a Experimental and numerical investigation of a density-driven instability during a horizontal miscible displacement |h [elektronikus dokumentum] / |c Yorgos Stergiou |
| 260 | |c 2023 | ||
| 300 | |a 12 | ||
| 490 | 0 | |a PHYSICS OF FLUIDS |v 35 No. 6 | |
| 520 | 3 | |a We performed an experimental and numerical investigation of a convective buoyancy-driven instability that arises during the injection of a denser miscible fluid into a less dense one in a rectilinear geometry. We visualized the instability using a shadowgraph technique, and we obtained quantitative information using micro-Particle Image Velocimetry. Numerical simulations provided further insights into the three-dimensional (3D) velocity field. We have shown that the instability only occurs above a certain Peclet number, Pe, depending on the Rayleigh, Ra, and Schmidt, Sc, numbers. We suggest scalings of the critical time, T-C, and dimensionless wavelength, ?/h, of the instability, both of which increase with increasing Pe and Ra. Finally, we investigated the interactions of the instability vortices with each other and the geometry boundaries. | |
| 650 | 4 | |a Kémiai tudományok | |
| 700 | 0 | 1 | |a Papp Paszkál |e aut |
| 700 | 0 | 1 | |a Horváth Dezső |e aut |
| 700 | 0 | 1 | |a Tóth Ágota |e aut |
| 700 | 0 | 1 | |a Eckert Kerstin |e aut |
| 700 | 0 | 1 | |a Schwarzenberger Karin |e aut |
| 856 | 4 | 0 | |u http://publicatio.bibl.u-szeged.hu/28028/1/POF23-AR-01717_AcceptedManuscript.pdf |z Dokumentum-elérés |