Re-writing non uniform v_turb #490

Job	Run time
build+test (macos-arm, gfortran, openmp=yes, release=yes)	13m 6s
build+test (macos-arm, gfortran, openmp=yes, release=no)	11m 18s
build+test (macos-arm, gfortran, openmp=no, release=yes)	25m 38s
build+test (macos-arm, gfortran, openmp=no, release=no)	23m 2s
build+test (macos-intel, gfortran, openmp=yes, release=yes)	30m 17s
build+test (macos-intel, gfortran, openmp=yes, release=no)	16m 43s
build+test (macos-intel, gfortran, openmp=no, release=yes)	49m 37s
build+test (macos-intel, gfortran, openmp=no, release=no)	42m 54s
build+test (linux, gfortran, openmp=yes, release=yes)	13m 42s
build+test (linux, gfortran, openmp=yes, release=no)	12m 52s
build+test (linux, gfortran, openmp=no, release=yes)	30m 9s
build+test (linux, gfortran, openmp=no, release=no)	27m 54s
build+test (linux, ifort, openmp=yes, release=yes)	20m 44s
build+test (linux, ifort, openmp=yes, release=no)	17m 17s
build+test (linux, ifort, openmp=no, release=yes)	33m 20s
build+test (linux, ifort, openmp=no, release=no)	37m 48s
benchmark (gfortran)	4m 43s
release	0s
	6h 51m 4s

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