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Adjoint-based Calibration of Inlet Boundary Condition for Atmospheric CFD Solvers

 
: Akbarzadeh, Siamak; Kassem, Hassan; Buhr, R.; Steinfeld, G.

:
Fulltext urn:nbn:de:0011-n-5344940 (386 KByte PDF)
MD5 Fingerprint: a7b08c894599fd18ab72f4536ad1b05a
Created on: 19.2.2019


Uppsala Universitet, Earth Sciences Department:
SOWE 2018, 6th Symposium on OpenFOAM in Wind Energy 2018 : June 13-14, 2018, Visby
Visby, 2018
5 pp.
Symposium on OpenFOAM in Wind Energy (SOWE) <6, 2018, Visby>
English
Conference Paper, Electronic Publication
Fraunhofer IWES ()

Abstract
An adjoint solver is developed for optimization of inlet velocity boundary condition for incompressible atmospheric boundary layer (ABL) CFD simulations. Using the wind speed observations in the interior domain, the solver computes the gradient of the calibration objective function with respect to inlet velocity components as design variables. The algorithm is implemented in the open source CFD package OpenFOAM. Further, the DAKOTA optimization package is coupled with OpenFOAM and numerical studies are carried out to determine the inlet velocity profile of a 3D domain with a cosine shaped hill. The CFD simulation with optimized inlet velocty profile shows good agreement with experimental study.

: http://publica.fraunhofer.de/documents/N-534494.html