Numerical Simulation of a Lee Wave Case over Three-Dimensional Mountainous Terrain under Strong Wind Condition
Joint Authors
Chan, Pak-Wai
Zhang, Lijie
Hu, Fei
Li, Lei
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-05-08
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
This study of a lee wave event over three-dimensional (3D) mountainous terrain in Lantau Island, Hong Kong, using a simulation combining mesoscale model and computational fluid dynamics (CFD) model has shown that (1) 3D steep mountainous terrain can trigger small scale lee waves under strong wind condition, and the horizontal extent of the wave structure is in a dimension of few kilometers and corresponds to the dimension of the horizontal cross-section of the mountain; (2) the life cycle of the lee wave is short, and the wave structures will continuously form roughly in the same location, then gradually move downstream, and dissipate over time; (3) the lee wave triggered by the mountainous terrain in this case can be categorized into “nonsymmetric vortex shedding” or “turbulent wake,” as defined before based on water tank experiments; (4) the magnitude of the wave is related to strength of wind shear.
This study also shows that a simulation combining mesoscale model and CFD can capture complex wave structure in the boundary layer over realistic 3D steep terrain, and have a potential value for operational jobs on air traffic warning, wind energy utilization, and atmospheric environmental assessment.
American Psychological Association (APA)
Li, Lei& Chan, Pak-Wai& Zhang, Lijie& Hu, Fei. 2013. Numerical Simulation of a Lee Wave Case over Three-Dimensional Mountainous Terrain under Strong Wind Condition. Advances in Meteorology،Vol. 2013, no. 2013, pp.1-13.
https://search.emarefa.net/detail/BIM-461857
Modern Language Association (MLA)
Li, Lei…[et al.]. Numerical Simulation of a Lee Wave Case over Three-Dimensional Mountainous Terrain under Strong Wind Condition. Advances in Meteorology No. 2013 (2013), pp.1-13.
https://search.emarefa.net/detail/BIM-461857
American Medical Association (AMA)
Li, Lei& Chan, Pak-Wai& Zhang, Lijie& Hu, Fei. Numerical Simulation of a Lee Wave Case over Three-Dimensional Mountainous Terrain under Strong Wind Condition. Advances in Meteorology. 2013. Vol. 2013, no. 2013, pp.1-13.
https://search.emarefa.net/detail/BIM-461857
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-461857