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test: hold the vertical coupled-torsion lines taut #13

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SMI-Lab-Inha merged 1 commit into from
Oct 14, 2026
Merged

test: hold the vertical coupled-torsion lines taut #13

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7 changes: 5 additions & 2 deletions tests/test_coupled_torsion.f90
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Original file line number Diff line number Diff line change
Expand Up @@ -76,7 +76,10 @@ END SUBROUTINE require
SUBROUTINE write_deck(path, point_a, vertical, anchor_x)
!! The straight neutral torsion line, End A on point_a, outputs Torq1N1, Torq1N41, Twist1:
!! along +x from (0, 0, -50) to (100, 0, -50), or with vertical from (0, 0, -20) down to
!! (anchor_x, 0, -120) (anchor_x: the farm-global x of the turbine the line hangs under).
!! (anchor_x, 0, -120.5) (anchor_x: the farm-global x of the turbine the line hangs under).
!! The vertical line is held taut at 0.5 % strain: at zero tension its static solve has no
!! catenary seed and its result depends on round-off (it failed with OpenBLAS's Prescott
!! kernels).
CHARACTER(*), INTENT(IN) :: path, point_a
LOGICAL, INTENT(IN), OPTIONAL :: vertical
REAL(wp), INTENT(IN), OPTIONAL :: anchor_x
Expand All @@ -89,7 +92,7 @@ SUBROUTINE write_deck(path, point_a, vertical, anchor_x)
ax = 0.0_wp
IF (PRESENT(anchor_x)) ax = anchor_x
anchor = '2 Fixed 100.0 0.0 -50.0 0 0 0 0'
IF (vert) WRITE (anchor, '(A,F8.1,A)') '2 Fixed ', ax, ' 0.0 -120.0 0 0 0 0'
IF (vert) WRITE (anchor, '(A,F8.1,A)') '2 Fixed ', ax, ' 0.0 -120.5 0 0 0 0'
OPEN (NEWUNIT=u, FILE=path, STATUS='REPLACE', ACTION='WRITE')
WRITE (u, '(A)') 'coupled torsion gate'
WRITE (u, '(A)') '--- LINE TYPES ---'
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