Flow field detection using acoustic travel time tomography
Acoustic travel time tomography uses the dependence of sound speed on temperature and flow properties along the propagation path to measure these parameters. An algorithm is introduced that is capable of resolving the two-dimensional flow field within a specified measuring area. Different flow field...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Borntraeger
2007-08-01
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| Series: | Meteorologische Zeitschrift |
| Online Access: | http://dx.doi.org/10.1127/0941-2948/2007/0216 |
| _version_ | 1797332587058823168 |
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| author | Manuela Barth Armin Raabe Klaus Arnold Christian Resagk Ronald du Puits |
| author_facet | Manuela Barth Armin Raabe Klaus Arnold Christian Resagk Ronald du Puits |
| author_sort | Manuela Barth |
| collection | DOAJ |
| description | Acoustic travel time tomography uses the dependence of sound speed on temperature and flow properties along the propagation path to measure these parameters. An algorithm is introduced that is capable of resolving the two-dimensional flow field within a specified measuring area. Different flow fields have been simulated to explore the reconstruction properties of the algorithm. Furthermore, an experiment within the Barrel of Ilmenau has been carried out, which demonstrates that the acoustic tomographic method is able to detect flow fields in a closed convection chamber. The simulations reveal that the vector tomographic algorithm can resolve the flow field characteristics speed and direction. Furthermore it is demonstrated that the distribution of sound sources and receivers has to be homogeneous around the measuring site. For the reconstruction of flow distributions, this requirement is even more important compared to temperature reconstructions, since information along inclined sound ray paths within each grid cell are needed to reconstruct the flow vector properly. |
| first_indexed | 2024-03-08T07:51:04Z |
| format | Article |
| id | doaj.art-9fa66c97622b4c8d8bd197299efcdcf4 |
| institution | Directory Open Access Journal |
| issn | 0941-2948 |
| language | English |
| last_indexed | 2024-03-08T07:51:04Z |
| publishDate | 2007-08-01 |
| publisher | Borntraeger |
| record_format | Article |
| series | Meteorologische Zeitschrift |
| spelling | doaj.art-9fa66c97622b4c8d8bd197299efcdcf42024-02-02T14:47:19ZengBorntraegerMeteorologische Zeitschrift0941-29482007-08-0116444345010.1127/0941-2948/2007/021655996Flow field detection using acoustic travel time tomographyManuela BarthArmin RaabeKlaus ArnoldChristian ResagkRonald du PuitsAcoustic travel time tomography uses the dependence of sound speed on temperature and flow properties along the propagation path to measure these parameters. An algorithm is introduced that is capable of resolving the two-dimensional flow field within a specified measuring area. Different flow fields have been simulated to explore the reconstruction properties of the algorithm. Furthermore, an experiment within the Barrel of Ilmenau has been carried out, which demonstrates that the acoustic tomographic method is able to detect flow fields in a closed convection chamber. The simulations reveal that the vector tomographic algorithm can resolve the flow field characteristics speed and direction. Furthermore it is demonstrated that the distribution of sound sources and receivers has to be homogeneous around the measuring site. For the reconstruction of flow distributions, this requirement is even more important compared to temperature reconstructions, since information along inclined sound ray paths within each grid cell are needed to reconstruct the flow vector properly.http://dx.doi.org/10.1127/0941-2948/2007/0216 |
| spellingShingle | Manuela Barth Armin Raabe Klaus Arnold Christian Resagk Ronald du Puits Flow field detection using acoustic travel time tomography Meteorologische Zeitschrift |
| title | Flow field detection using acoustic travel time tomography |
| title_full | Flow field detection using acoustic travel time tomography |
| title_fullStr | Flow field detection using acoustic travel time tomography |
| title_full_unstemmed | Flow field detection using acoustic travel time tomography |
| title_short | Flow field detection using acoustic travel time tomography |
| title_sort | flow field detection using acoustic travel time tomography |
| url | http://dx.doi.org/10.1127/0941-2948/2007/0216 |
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