Matches in SemOpenAlex for { <https://semopenalex.org/work/W3159392951> ?p ?o ?g. }
Showing items 1 to 74 of
74
with 100 items per page.
- W3159392951 abstract "This thesis is concerned with the development of experimental diagnostic techniques for the study of nonlinear instabilities in annular liquid sheets. An axisymmetric annular sheet of varying thickness with no swirl and parallel injection of gas and liquid phases (i.e. no impingement) is considered. In this flow, break-up of the sheet is due to aerodynamic shear forces at the interfaces. Highly resolved velocity measurements of the phase interface from high speed digital images are achieved via a specialised sub-pixel image correlation algorithm. Metrics for image quality based on defocus and image noise are defined, and the effect on the uncertainty in the measured velocity is investigated. The image correlation approach is benchmarked against a number of alternative algorithms with regard to error sensitivity.Decomposition of spatial instability modes is achieved via a novel application of Koopman Mode analysis via the Dynamic Mode Decomposition (DMD). A synthetic error analysis is applied to the DMD to estimate the propagation of uncertainty as a function of data quantity and quality. DMD provides a spatially resolved amplification profile which yields a novel characterisation of the evolution of the non-linear instability.With these techniques, some new insight is obtained into the behaviour of the instability. An unexpectedly rapid onset of nonlinearity in the near-field is observed. In concert with DMD, a novel application of Hilbert-Huang decomposition allows a new theory of modulated nonlinear instability in the far-field of the spray to be proposed.A parametric analysis over an order of magnitude variation in Reynolds number, Weber number and gas momentum is undertaken. From this, a temporal scaling behaviour is observed which shows reasonable agreement with other studies. Using the DMD results, a new scaling behaviour for the effects of the sheet thickness on the convective nonlinear instability is proposed." @default.
- W3159392951 created "2021-05-10" @default.
- W3159392951 creator A5017185760 @default.
- W3159392951 date "2017-02-14" @default.
- W3159392951 modified "2023-09-26" @default.
- W3159392951 title "Development of diagnostic techniques for the investigation of instabilities in annular liquid sheets" @default.
- W3159392951 doi "https://doi.org/10.4225/03/58a26a41188d9" @default.
- W3159392951 hasPublicationYear "2017" @default.
- W3159392951 type Work @default.
- W3159392951 sameAs 3159392951 @default.
- W3159392951 citedByCount "0" @default.
- W3159392951 crossrefType "dissertation" @default.
- W3159392951 hasAuthorship W3159392951A5017185760 @default.
- W3159392951 hasConcept C105795698 @default.
- W3159392951 hasConcept C115961682 @default.
- W3159392951 hasConcept C117251300 @default.
- W3159392951 hasConcept C120665830 @default.
- W3159392951 hasConcept C121332964 @default.
- W3159392951 hasConcept C13393347 @default.
- W3159392951 hasConcept C154945302 @default.
- W3159392951 hasConcept C158622935 @default.
- W3159392951 hasConcept C182748727 @default.
- W3159392951 hasConcept C196558001 @default.
- W3159392951 hasConcept C207821765 @default.
- W3159392951 hasConcept C2777032711 @default.
- W3159392951 hasConcept C33923547 @default.
- W3159392951 hasConcept C41008148 @default.
- W3159392951 hasConcept C57879066 @default.
- W3159392951 hasConcept C62520636 @default.
- W3159392951 hasConcept C99498987 @default.
- W3159392951 hasConceptScore W3159392951C105795698 @default.
- W3159392951 hasConceptScore W3159392951C115961682 @default.
- W3159392951 hasConceptScore W3159392951C117251300 @default.
- W3159392951 hasConceptScore W3159392951C120665830 @default.
- W3159392951 hasConceptScore W3159392951C121332964 @default.
- W3159392951 hasConceptScore W3159392951C13393347 @default.
- W3159392951 hasConceptScore W3159392951C154945302 @default.
- W3159392951 hasConceptScore W3159392951C158622935 @default.
- W3159392951 hasConceptScore W3159392951C182748727 @default.
- W3159392951 hasConceptScore W3159392951C196558001 @default.
- W3159392951 hasConceptScore W3159392951C207821765 @default.
- W3159392951 hasConceptScore W3159392951C2777032711 @default.
- W3159392951 hasConceptScore W3159392951C33923547 @default.
- W3159392951 hasConceptScore W3159392951C41008148 @default.
- W3159392951 hasConceptScore W3159392951C57879066 @default.
- W3159392951 hasConceptScore W3159392951C62520636 @default.
- W3159392951 hasConceptScore W3159392951C99498987 @default.
- W3159392951 hasLocation W31593929511 @default.
- W3159392951 hasOpenAccess W3159392951 @default.
- W3159392951 hasPrimaryLocation W31593929511 @default.
- W3159392951 hasRelatedWork W1517465211 @default.
- W3159392951 hasRelatedWork W1984196222 @default.
- W3159392951 hasRelatedWork W1997394435 @default.
- W3159392951 hasRelatedWork W2028123762 @default.
- W3159392951 hasRelatedWork W2042724122 @default.
- W3159392951 hasRelatedWork W2100238376 @default.
- W3159392951 hasRelatedWork W2120029637 @default.
- W3159392951 hasRelatedWork W2168222921 @default.
- W3159392951 hasRelatedWork W2521029591 @default.
- W3159392951 hasRelatedWork W2549774780 @default.
- W3159392951 hasRelatedWork W2675815678 @default.
- W3159392951 hasRelatedWork W2737114520 @default.
- W3159392951 hasRelatedWork W2768447697 @default.
- W3159392951 hasRelatedWork W2780227018 @default.
- W3159392951 hasRelatedWork W2971794974 @default.
- W3159392951 hasRelatedWork W3000193145 @default.
- W3159392951 hasRelatedWork W3020649358 @default.
- W3159392951 hasRelatedWork W3024955560 @default.
- W3159392951 hasRelatedWork W3143949740 @default.
- W3159392951 hasRelatedWork W3197573315 @default.
- W3159392951 isParatext "false" @default.
- W3159392951 isRetracted "false" @default.
- W3159392951 magId "3159392951" @default.
- W3159392951 workType "dissertation" @default.