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Adjoint Navier-Stokes methods for hydrodynamic shape optimisation
Citation Link: https://doi.org/10.15480/882.1061
Other Titles
Adjungierte Navier-Stokes-Methode für hydrodynamische Zielfunktionsableitungen
Publikationstyp
Thesis
Thesis Type
Doctoral Thesis
Publikationsdatum
2012
Sprache
English
Author
Advisor
Title Granting Institution
Technische Universität Hamburg
Place of Title Granting Institution
Hamburg
Examination Date
2011-11-16
To efficiently calculate the sensitivity derivative of hydrodynamic objective functionals with respect to the shape, the adjoint Navier-Stokes equations were derived analytically. Consistent adjoint discretisation schemes were developed term-wise from the primal finite-volume discretisation. The adjoint method, implemented in the framework of a general-purpose pressure-correction based RANS code for unstructured grids, was validated against analytical solutions and verified by means of the direct-differentiation method. The adjoint-based sensitivity derivative was computed to guide a manual re-design of a ship hull to improve the wake field. Moreover, automatic shape-optimisation runs were carried out to reduce the power loss for ducted flows.
Schlagworte
adjungierte Navier-Stokes-Methode
Druckkorrekturverfahren
Finite-Volumen-Methode
inkompressible Strömung
Formoptimierung
Adjoint Navier-Stokes method
sensitivity analysis
pressure-correction method
finite-volume method
incompressible flow
shape optimisation