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Solver

chtMultiRegion solvers

system/fvSolution file is now mandatory

Input dictionaries

Special treatment for the dictionary include keyword has was removed after being deprecated many versions ago.

Utilities

applyBoundaryLayer

Writing the turbulence viscosity field nut is now optional via the option -write-nut

noise

Power of 2 data samples constraint was removed

Function objects

secondaryWrite option in the system/controlDict superseded by the writeObject function object.