Merge branch 'ConvectedHelmholtz' into 'master'

CMakeLists.txt

demos/hierarchical/helmholtzDuctHeteroX/CMakeLists.txt

demos/hierarchical/helmholtzDuctHeteroX/main.cpp

demos/hierarchical/helmholtzDuctHeteroX/main_loop_length.cpp

demos/hierarchical/helmholtzDuctHeteroX/main_loop_omega.cpp

demos/hierarchical/helmholtzDuctHeteroY/CMakeLists.txt

demos/hierarchical/helmholtzDuctHeteroY/main.cpp

demos/hierarchical/helmholtzDuctHeteroY/main_loop_length.cpp

demos/hierarchical/helmholtzDuctHeteroY/main_loop_omega.cpp

demos/hierarchical/helmholtzflow/Duct_ABCs/main_omega.cpp

demos/hierarchical/helmholtzflow/Duct_HeteroX/CMakeLists.txt

demos/hierarchical/helmholtzflow/Duct_HeteroX/main.cpp

...erarchical/helmholtzflow/Duct_HeteroX/main_loop_omega.cpp

...ierarchical/helmholtzflow/FlowPastCylinder/CMakeLists.txt

demos/hierarchical/helmholtzflow/FlowPastCylinder/main.cpp

...s/hierarchical/helmholtzflow/FreeField/runTests_circle.sh

...s/hierarchical/helmholtzflow/FreeField/runTests_square.sh

examples/helmholtzFlow/Duct_ABCs/main.cpp

examples/helmholtzFlow/FreeField/main.cpp

src/analytics/Helmholtz2D.cpp