Three-dimensional capillary waves due to a submerged source with small surface tension
Steady and unsteady linearised flow past a submerged source are studied in the small-surface-tension limit, in the absence of gravitational effects. The free-surface capillary waves generated are exponentially small in the surface tension, and are determined using the theory of exponential asymptoti...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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Cambridge University Press
2019
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| _version_ | 1826268368909369344 |
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| author | Lustri, C Pethiyagoda, R Chapman, S |
| author_facet | Lustri, C Pethiyagoda, R Chapman, S |
| author_sort | Lustri, C |
| collection | OXFORD |
| description | Steady and unsteady linearised flow past a submerged source are studied in the small-surface-tension limit, in the absence of gravitational effects. The free-surface capillary waves generated are exponentially small in the surface tension, and are determined using the theory of exponential asymptotics. In the steady problem, capillary waves are found to extend upstream from the source, switching on across curves on the free surface known as Stokes lines. Asymptotic predictions are compared with computational solutions for the position of the free surface. In the unsteady problem, transient effects cause the solution to display more complicated asymptotic behaviour, such as higher-order Stokes lines. The theory of exponential asymptotics is applied to show how the capillary waves evolve over time, and eventually tend to the steady solution. |
| first_indexed | 2024-03-06T21:08:38Z |
| format | Journal article |
| id | oxford-uuid:3d5d33d2-5df1-4405-bdaf-e47c845ac755 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:08:38Z |
| publishDate | 2019 |
| publisher | Cambridge University Press |
| record_format | dspace |
| spelling | oxford-uuid:3d5d33d2-5df1-4405-bdaf-e47c845ac7552022-03-26T14:18:54ZThree-dimensional capillary waves due to a submerged source with small surface tensionJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:3d5d33d2-5df1-4405-bdaf-e47c845ac755EnglishSymplectic Elements at OxfordCambridge University Press2019Lustri, CPethiyagoda, RChapman, SSteady and unsteady linearised flow past a submerged source are studied in the small-surface-tension limit, in the absence of gravitational effects. The free-surface capillary waves generated are exponentially small in the surface tension, and are determined using the theory of exponential asymptotics. In the steady problem, capillary waves are found to extend upstream from the source, switching on across curves on the free surface known as Stokes lines. Asymptotic predictions are compared with computational solutions for the position of the free surface. In the unsteady problem, transient effects cause the solution to display more complicated asymptotic behaviour, such as higher-order Stokes lines. The theory of exponential asymptotics is applied to show how the capillary waves evolve over time, and eventually tend to the steady solution. |
| spellingShingle | Lustri, C Pethiyagoda, R Chapman, S Three-dimensional capillary waves due to a submerged source with small surface tension |
| title | Three-dimensional capillary waves due to a submerged source with small surface tension |
| title_full | Three-dimensional capillary waves due to a submerged source with small surface tension |
| title_fullStr | Three-dimensional capillary waves due to a submerged source with small surface tension |
| title_full_unstemmed | Three-dimensional capillary waves due to a submerged source with small surface tension |
| title_short | Three-dimensional capillary waves due to a submerged source with small surface tension |
| title_sort | three dimensional capillary waves due to a submerged source with small surface tension |
| work_keys_str_mv | AT lustric threedimensionalcapillarywavesduetoasubmergedsourcewithsmallsurfacetension AT pethiyagodar threedimensionalcapillarywavesduetoasubmergedsourcewithsmallsurfacetension AT chapmans threedimensionalcapillarywavesduetoasubmergedsourcewithsmallsurfacetension |