Numerical simulation of multiphase jet fragmentation using Smoothed Particle Hydrodynamics
This thesis is devoted to the study of multiphase jet fragmentation using Smoothed Particle Hydrodynamics (SPH). The theoretical aspects of three hydrodynamic instabilities, namely the Kelvin-Helmholtz instability (KHI), Rayleigh-Taylor instability (RTI), and Rayleigh Plateau instability (RPI) are r...
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| Format: | Thesis (University of Nottingham only) |
| Language: | English |
| Published: |
2015
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| Online Access: | https://eprints.nottingham.ac.uk/28329/ |
| _version_ | 1848793554680283136 |
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| author | Yue, Thomas Chun Long |
| author_facet | Yue, Thomas Chun Long |
| author_sort | Yue, Thomas Chun Long |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | This thesis is devoted to the study of multiphase jet fragmentation using Smoothed Particle Hydrodynamics (SPH). The theoretical aspects of three hydrodynamic instabilities, namely the Kelvin-Helmholtz instability (KHI), Rayleigh-Taylor instability (RTI), and Rayleigh Plateau instability (RPI) are reviewed. The linear growth rate of the combined KHI and RTI are derived by means of linear perturbation in chapter 2. The linear growth rate of the multiphase RPI is presented in chapter 7.
An overview of the Smoothed Particle Hydrodynamics is given in chapter 3. A pseudo-consistent SPH scheme is presented for the simulation of multiphase flow problems. Additionally, two interface stabilisation models are presented: quasi-buoyancy model and gas-repulsion model. When used in combination with the pseudo-consistent SPH scheme, these models are found to be superior than those presented in the weakly-compressible SPH literature and allows for the simulations for density ratio up to three-magnitudes.
The development of an idealised KHI and a KHI subjected to constant gravitational acceleration (stratified shear instability) is examined in chapter 5. The extracted linear growth rate are compared with the theoretical growth rate presented both in the literature and in chapter 2 for the purpose of validation. The development of a single- and multi-mode RTI are studied by means of SPH in chapter 6. Chapter 7 presents the results for the three-dimensional RPI occurring between two fluids. Based on the knowledge acquired in chapter 5-7, the multiphase jet fragmentation driven by the previously mentioned hydrodynamic instabilities are presented in chapter 8. Finally, the major research findings and recommendations are summarised in chapter 9. |
| first_indexed | 2025-11-14T19:02:09Z |
| format | Thesis (University of Nottingham only) |
| id | nottingham-28329 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T19:02:09Z |
| publishDate | 2015 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-283292025-02-28T11:33:24Z https://eprints.nottingham.ac.uk/28329/ Numerical simulation of multiphase jet fragmentation using Smoothed Particle Hydrodynamics Yue, Thomas Chun Long This thesis is devoted to the study of multiphase jet fragmentation using Smoothed Particle Hydrodynamics (SPH). The theoretical aspects of three hydrodynamic instabilities, namely the Kelvin-Helmholtz instability (KHI), Rayleigh-Taylor instability (RTI), and Rayleigh Plateau instability (RPI) are reviewed. The linear growth rate of the combined KHI and RTI are derived by means of linear perturbation in chapter 2. The linear growth rate of the multiphase RPI is presented in chapter 7. An overview of the Smoothed Particle Hydrodynamics is given in chapter 3. A pseudo-consistent SPH scheme is presented for the simulation of multiphase flow problems. Additionally, two interface stabilisation models are presented: quasi-buoyancy model and gas-repulsion model. When used in combination with the pseudo-consistent SPH scheme, these models are found to be superior than those presented in the weakly-compressible SPH literature and allows for the simulations for density ratio up to three-magnitudes. The development of an idealised KHI and a KHI subjected to constant gravitational acceleration (stratified shear instability) is examined in chapter 5. The extracted linear growth rate are compared with the theoretical growth rate presented both in the literature and in chapter 2 for the purpose of validation. The development of a single- and multi-mode RTI are studied by means of SPH in chapter 6. Chapter 7 presents the results for the three-dimensional RPI occurring between two fluids. Based on the knowledge acquired in chapter 5-7, the multiphase jet fragmentation driven by the previously mentioned hydrodynamic instabilities are presented in chapter 8. Finally, the major research findings and recommendations are summarised in chapter 9. 2015-03-15 Thesis (University of Nottingham only) NonPeerReviewed application/pdf en arr https://eprints.nottingham.ac.uk/28329/9/ThomasYue_Thesis_Final.pdf Yue, Thomas Chun Long (2015) Numerical simulation of multiphase jet fragmentation using Smoothed Particle Hydrodynamics. PhD thesis, University of Nottingham. hydrodynamics jets fluid dynamics jet fragmentation |
| spellingShingle | hydrodynamics jets fluid dynamics jet fragmentation Yue, Thomas Chun Long Numerical simulation of multiphase jet fragmentation using Smoothed Particle Hydrodynamics |
| title | Numerical simulation of multiphase jet fragmentation using Smoothed Particle Hydrodynamics |
| title_full | Numerical simulation of multiphase jet fragmentation using Smoothed Particle Hydrodynamics |
| title_fullStr | Numerical simulation of multiphase jet fragmentation using Smoothed Particle Hydrodynamics |
| title_full_unstemmed | Numerical simulation of multiphase jet fragmentation using Smoothed Particle Hydrodynamics |
| title_short | Numerical simulation of multiphase jet fragmentation using Smoothed Particle Hydrodynamics |
| title_sort | numerical simulation of multiphase jet fragmentation using smoothed particle hydrodynamics |
| topic | hydrodynamics jets fluid dynamics jet fragmentation |
| url | https://eprints.nottingham.ac.uk/28329/ |