Inversion Study of Vertical Eddy Viscosity Coefficient Based on an Internal Tidal Model with the Adjoint Method
Joint Authors
Liu, Qiang
Jin, Guangzhen
Lv, Xianqing
Source
Mathematical Problems in Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-03-25
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
Based on an isopycnic-coordinate internal tidal model with the adjoint method, the inversion of spatially varying vertical eddy viscosity coefficient (VEVC) is studied in two groups of numerical experiments.
In Group One, the influences of independent point schemes (IPSs) exerting on parameter inversion are discussed.
Results demonstrate that the VEVCs can be inverted successfully with IPSs and the model has the best performance with the optimal IPSs.
Using the optimal IPSs obtained in Group One, the inversions of VEVCs on two different Gaussian bottom topographies are carried out in Group Two.
In addition, performances of two optimization methods of which one is the limited-memory Broyden-Fletcher-Goldfarb-Shanno (L-BFGS) method and the other is a simplified gradient descent method (GDM-S) are also investigated.
Results of the experiments indicate that this adjoint model is capable to invert the VEVC with spatially distribution, no matter which optimization method is taken.
The L-BFGS method has a better performance in terms of the convergence rate and the inversion results.
In general, the L-BFGS method is a more effective and efficient optimization method than the GDM-S.
American Psychological Association (APA)
Jin, Guangzhen& Liu, Qiang& Lv, Xianqing. 2015. Inversion Study of Vertical Eddy Viscosity Coefficient Based on an Internal Tidal Model with the Adjoint Method. Mathematical Problems in Engineering،Vol. 2015, no. 2015, pp.1-14.
https://search.emarefa.net/detail/BIM-1075044
Modern Language Association (MLA)
Jin, Guangzhen…[et al.]. Inversion Study of Vertical Eddy Viscosity Coefficient Based on an Internal Tidal Model with the Adjoint Method. Mathematical Problems in Engineering No. 2015 (2015), pp.1-14.
https://search.emarefa.net/detail/BIM-1075044
American Medical Association (AMA)
Jin, Guangzhen& Liu, Qiang& Lv, Xianqing. Inversion Study of Vertical Eddy Viscosity Coefficient Based on an Internal Tidal Model with the Adjoint Method. Mathematical Problems in Engineering. 2015. Vol. 2015, no. 2015, pp.1-14.
https://search.emarefa.net/detail/BIM-1075044
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1075044