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for incompressible flows. The typical convention of appending the primal field name with 'a' to form the adjoint field is followed for the adjoint turbulent kinetic energy (i.e. 'ka') but since this would produce an ugly variable name for the adjoint to omega (i.e. omegaa), the latter is abbreviated to 'wa'. The work is based on \verbatim Kavvadias, I., Papoutsis-Kiachagias, E., Dimitrakopoulos, G., & Giannakoglou, K. (2014). The continuous adjoint approach to the k–$omega$ SST turbulence model with applications in shape optimization Engineering Optimization, 47(11), 1523-1542. https://doi.org/10.1080/0305215X.2014.979816 \endverbatim with changes in the discretisation of a number of differential operators and the formulation of the adjoint to the wall functions employed by the primal model. Regarding the latter, the code assumes (and differentiates) the default behaviour of nutkWallFunction (i.e. nutWallFunction::ble...
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