Gejadze, I.Y. and Copeland, G.J.M. (2005) Adjoint sensitivity analysis for fluid flow with free surface. International Journal of Numerical Methods in Fluids, 47 (8-9). pp. 1027-1034. ISSN 0271-2091Full text not available in this repository. (Request a copy from the Strathclyde author)
This paper develops the adjoint sensitivities to the free surface incompressible barotropic Euler equations in order to allow for the assimilation of measurements of currents and free surface elevations into an unsteady flow solution by boundary control. To calculate a variation in a surface variable, a mapping is used in the vertical to shift the problem into a fixed domain. Then a variation is evaluated from the Jacobian matrix of the mapping. After calculating a variation in the surface variable and applying the inverse transformation, the tangent linear model is considered in the original space where the adjoint equations are then derived. The method is demonstrated by application to an unsteady flow in an open channel (a 2D vertical section model). A wider application is to the construction of a fully three-dimensional coastal ocean model that allows assimilation of tidal elevation and current data.
|Keywords:||sensitivity analysis, Euler equations, free surface, adjoint problem, civil engineering, Engineering (General). Civil engineering (General), Mechanics of Materials, Mechanical Engineering, Computational Mechanics, Applied Mathematics, Computer Science Applications|
|Subjects:||Technology > Engineering (General). Civil engineering (General)|
|Department:||Faculty of Engineering > Civil and Environmental Engineering|
|Depositing user:||Strathprints Administrator|
|Date Deposited:||05 Sep 2008|
|Last modified:||22 Mar 2017 09:41|