Numerical simulation of terrain-induced vortex/wave shedding at the Hong Kong International Airport
The present study aims at simulating the shedding of vortex/wave from a mountain nearby the Hong Kong International Airport using a computational fluid dynamics model by employing high resolution terrain data without smoothing. The successful simulation of this shedding would have an important appl...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Borntraeger
2013-07-01
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| Series: | Meteorologische Zeitschrift |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1127/0941-2948/2013/0439 |
| _version_ | 1797321345987510272 |
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| author | Li Lei P.W. Chan Zhang Li-Jie Mao Hui |
| author_facet | Li Lei P.W. Chan Zhang Li-Jie Mao Hui |
| author_sort | Li Lei |
| collection | DOAJ |
| description | The present study aims at simulating the shedding of vortex/wave from a mountain nearby the Hong Kong International Airport using a computational fluid dynamics model by employing high resolution terrain data without smoothing. The successful simulation of this shedding would have an
important application in the short-term forecasting of the chance of occurrence of terrain-induced windshear at an operating airport. Two typical cases of vortex/wave shedding are considered, namely, in neutral atmosphere associated with the passage of a typhoon, and in stably stratified atmosphere
in spring-time easterly flow with continental origin. The model is found to successfully capture the salient features of the shedding. The simulated radial velocity fields of weather radar/LIDAR compare well with actual observations. In particular, the creation and the propagation of the vortex/wave
through shedding from a mountain nearby the airport are captured well in the model simulation. The shedding periods are also reproduced. From the limited number of cases studied in this paper, it appears that the model has the capability of forecasting the occurrence of vortex/wave shedding
by coupling with a mesoscale meteorological model. |
| first_indexed | 2024-03-08T04:56:18Z |
| format | Article |
| id | doaj.art-3a8eca9c9061450d94b09eb86c83cc7b |
| institution | Directory Open Access Journal |
| issn | 0941-2948 |
| language | English |
| last_indexed | 2024-03-08T04:56:18Z |
| publishDate | 2013-07-01 |
| publisher | Borntraeger |
| record_format | Article |
| series | Meteorologische Zeitschrift |
| spelling | doaj.art-3a8eca9c9061450d94b09eb86c83cc7b2024-02-07T15:09:08ZengBorntraegerMeteorologische Zeitschrift0941-29482013-07-0122331732710.1127/0941-2948/2013/043981065Numerical simulation of terrain-induced vortex/wave shedding at the Hong Kong International AirportLi LeiP.W. ChanZhang Li-JieMao HuiThe present study aims at simulating the shedding of vortex/wave from a mountain nearby the Hong Kong International Airport using a computational fluid dynamics model by employing high resolution terrain data without smoothing. The successful simulation of this shedding would have an important application in the short-term forecasting of the chance of occurrence of terrain-induced windshear at an operating airport. Two typical cases of vortex/wave shedding are considered, namely, in neutral atmosphere associated with the passage of a typhoon, and in stably stratified atmosphere in spring-time easterly flow with continental origin. The model is found to successfully capture the salient features of the shedding. The simulated radial velocity fields of weather radar/LIDAR compare well with actual observations. In particular, the creation and the propagation of the vortex/wave through shedding from a mountain nearby the airport are captured well in the model simulation. The shedding periods are also reproduced. From the limited number of cases studied in this paper, it appears that the model has the capability of forecasting the occurrence of vortex/wave shedding by coupling with a mesoscale meteorological model.http://dx.doi.org/10.1127/0941-2948/2013/0439cfdmesoscale modellingvortex shedding |
| spellingShingle | Li Lei P.W. Chan Zhang Li-Jie Mao Hui Numerical simulation of terrain-induced vortex/wave shedding at the Hong Kong International Airport Meteorologische Zeitschrift cfd mesoscale modelling vortex shedding |
| title | Numerical simulation of terrain-induced vortex/wave shedding at the Hong Kong International Airport |
| title_full | Numerical simulation of terrain-induced vortex/wave shedding at the Hong Kong International Airport |
| title_fullStr | Numerical simulation of terrain-induced vortex/wave shedding at the Hong Kong International Airport |
| title_full_unstemmed | Numerical simulation of terrain-induced vortex/wave shedding at the Hong Kong International Airport |
| title_short | Numerical simulation of terrain-induced vortex/wave shedding at the Hong Kong International Airport |
| title_sort | numerical simulation of terrain induced vortex wave shedding at the hong kong international airport |
| topic | cfd mesoscale modelling vortex shedding |
| url | http://dx.doi.org/10.1127/0941-2948/2013/0439 |
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