NUMERICAL SIMULATION OF RAYLEIGH-TAYLOR INSTABILITY
Rayleigh-Taylor (RT) instability has a growing importance in many fields including aircraft industry and astrophysics. The development and the growth of RT instability were investigated using sinusoidal disturbances with different wavelength at the interface of two fluids. Numerical simulations were...
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| Format: | Article |
| Language: | English |
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Islamic Azad University-Isfahan (Khorasgan) Branch
2013-03-01
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| Series: | International Journal of Advanced Design and Manufacturing Technology |
| Online Access: | https://admt.isfahan.iau.ir/article_534825_0471094162ef7f06c36491f6e39f0463.pdf |
| _version_ | 1797657200277061632 |
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| author | Ahmad Sedaghat S Mokhtarian |
| author_facet | Ahmad Sedaghat S Mokhtarian |
| author_sort | Ahmad Sedaghat |
| collection | DOAJ |
| description | Rayleigh-Taylor (RT) instability has a growing importance in many fields including aircraft industry and astrophysics. The development and the growth of RT instability were investigated using sinusoidal disturbances with different wavelength at the interface of two fluids. Numerical simulations were performed by solving Navier-Stokes unsteady equations with the VOF formulation. Results of the 2D simulation are compared with experimental results. It is shown that beyond a critical time, not captured experimentally, the mushroom shape of RT instability turns into a helical path or breaks down into a patchy shape depending on the shape of disturbance. Nonlinear instabilities responsible for such behaviour are apparent when the wavelength exceeds 10 times a length scale introduced here. |
| first_indexed | 2024-03-11T17:42:07Z |
| format | Article |
| id | doaj.art-9ef556c7c3b24a27a1f64c8bd48fa152 |
| institution | Directory Open Access Journal |
| issn | 2252-0406 2383-4447 |
| language | English |
| last_indexed | 2024-03-11T17:42:07Z |
| publishDate | 2013-03-01 |
| publisher | Islamic Azad University-Isfahan (Khorasgan) Branch |
| record_format | Article |
| series | International Journal of Advanced Design and Manufacturing Technology |
| spelling | doaj.art-9ef556c7c3b24a27a1f64c8bd48fa1522023-10-18T09:43:43ZengIslamic Azad University-Isfahan (Khorasgan) BranchInternational Journal of Advanced Design and Manufacturing Technology2252-04062383-44472013-03-0161534825NUMERICAL SIMULATION OF RAYLEIGH-TAYLOR INSTABILITYAhmad Sedaghat0S MokhtarianDr Ahmad Sedaghat, Ph.D.Assistant ProfessorDepartment of Mechanical EngineeringIsfahan University of TechnologyIsfahan 84156-83111, I.R. of IranTel: +98-311-3912667Fax:+98-311-3912628URL:Rayleigh-Taylor (RT) instability has a growing importance in many fields including aircraft industry and astrophysics. The development and the growth of RT instability were investigated using sinusoidal disturbances with different wavelength at the interface of two fluids. Numerical simulations were performed by solving Navier-Stokes unsteady equations with the VOF formulation. Results of the 2D simulation are compared with experimental results. It is shown that beyond a critical time, not captured experimentally, the mushroom shape of RT instability turns into a helical path or breaks down into a patchy shape depending on the shape of disturbance. Nonlinear instabilities responsible for such behaviour are apparent when the wavelength exceeds 10 times a length scale introduced here.https://admt.isfahan.iau.ir/article_534825_0471094162ef7f06c36491f6e39f0463.pdf |
| spellingShingle | Ahmad Sedaghat S Mokhtarian NUMERICAL SIMULATION OF RAYLEIGH-TAYLOR INSTABILITY International Journal of Advanced Design and Manufacturing Technology |
| title | NUMERICAL SIMULATION OF RAYLEIGH-TAYLOR INSTABILITY |
| title_full | NUMERICAL SIMULATION OF RAYLEIGH-TAYLOR INSTABILITY |
| title_fullStr | NUMERICAL SIMULATION OF RAYLEIGH-TAYLOR INSTABILITY |
| title_full_unstemmed | NUMERICAL SIMULATION OF RAYLEIGH-TAYLOR INSTABILITY |
| title_short | NUMERICAL SIMULATION OF RAYLEIGH-TAYLOR INSTABILITY |
| title_sort | numerical simulation of rayleigh taylor instability |
| url | https://admt.isfahan.iau.ir/article_534825_0471094162ef7f06c36491f6e39f0463.pdf |
| work_keys_str_mv | AT ahmadsedaghat numericalsimulationofrayleightaylorinstability AT smokhtarian numericalsimulationofrayleightaylorinstability |