Merge pull request #465 from abhineet-gupta/ViternaFix

Fix Viterna extrapolation bug to avoid repeated data
WISDEM · Oct 13, 2023 · 59fecc1 · 59fecc1
2 parents 0cbb0a6 + 4f43ca6
commit 59fecc1
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/wisdem/ccblade/Polar.py b/wisdem/ccblade/Polar.py
@@ -350,6 +350,8 @@ def extrapolate(self, cdmax, AR=None, cdmin=0.001, nalpha=15):
         # -90 <-> -alpha_high
         alpha5 = np.linspace(-np.pi / 2, alpha5max, nalpha)
         alpha5 = alpha5[1:]
+        if alpha_low == -alpha_high:
+            alpha5 = alpha5[:-1]
         cl5, cd5 = self.__Viterna(-alpha5, -cl_adj)
 
         # -180+alpha_high <-> -90