Add negatives to coefficients

NREL · Jan 10, 2025 · 2d65c30 · 2d65c30
1 parent e3b1e9a
commit 2d65c30
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Showing 2 changed files with 6 additions and 6 deletions.
diff --git a/moorpy/MoorProps_newCosts.yaml b/moorpy/MoorProps_newCosts.yaml
@@ -56,7 +56,7 @@ lineProps:
     MBL_d2    :  1.21e9    # minimum breaking load per diameter^2 [N/m^2] 
     MBL_d     :  9.11e2    # minimum breaking load per diameter [N/m]   
     dvol_dnom :  1.80      # volume-equivalent diameter per nominal diameter [-] (assumes 7,850 kg/m^3 material density)
-    cost_d    :  1.5363e3  # cost per diameter [$/m^2]
+    cost_d    : -1.5363e3  # cost per diameter [$/m^2]
     cost_d2   :  1.5520e5  # cost per diameter^2 [$/m^3]
     Cd        :  1.333     # drag coefficient based on DNV-OS-E301 adjusted for use with volumetric diameter
     Cd_ax     :  0.639     # axial drag coefficient based on DNV-OS-E301 adjusted for use with volumetric diameter
@@ -70,7 +70,7 @@ lineProps:
     MBL_d2    :  1.21e9    # minimum breaking load per diameter^2 [N/m^2] 
     MBL_d     :  9.11e2    # minimum breaking load per diameter [N/m]   
     dvol_dnom :  1.89      # volume-equivalent diameter per nominal diameter [-] (assumes 7,850 kg/m^3 material density)
-    cost_d    :  1.5363e3  # cost per diameter [$/m^2]
+    cost_d    : -1.5363e3  # cost per diameter [$/m^2]
     cost_d2   :  1.5520e5  # cost per diameter^2 [$/m^3]
     Cd        :  1.376     # drag coefficient based on DNV-OS-E301 adjusted for use with volumetric diameter
     Cd_ax     :  0.741     # axial drag coefficient based on DNV-OS-E301 adjusted for use with volumetric diameter
@@ -124,7 +124,7 @@ lineProps:
     Cd        :  1.988     # drag coefficient based on DNV-OS-E301 adjusted for use with volumetric diameter
     Ca        :  1.1       # added mass coefficient based on Bureau Veritas 493-NR_2021-07
     Ca_ax     :  0.15      # axial added mass coefficient based on Bureau Veritas 493-NR_2021-07
-    cost_d    :  2.2742e3  # cost per diameter [$/m^2]
+    cost_d    : -2.2742e3  # cost per diameter [$/m^2]
     cost_d2   :  1.1004e5  # cost per diameter^2 [$/m^3]
 
 

diff --git a/moorpy/PointProps_default.yaml b/moorpy/PointProps_default.yaml
@@ -42,7 +42,7 @@ ConnectProps:
     # MBL       :     # MBL offset [kN]
     # MBL_m     :     # minimum breaking load per mass [kN/kg]
     cost_MBL  :  9.0499e-2    # cost per MBL [$/kN]
-    cost_MBL2 :  1.1632e-5    # cost per MBL^2 [$/kN^2]
+    cost_MBL2 : -1.1632e-5    # cost per MBL^2 [$/kN^2]
     cost_MBL3 :  3.6484e-9    # cost per MBL^3 [$/kN^3]
 
   connector  :  
@@ -53,7 +53,7 @@ ConnectProps:
     # MBL       :     # MBL offset [kN]
     # MBL_m     :     # minimum breaking load per mass [kN/kg]
     cost_MBL  :  1.3492       # cost per MBL [$/kN]
-    cost_MBL2 :  1.1512e-4    # cost per MBL^2 [$/kN^2]
+    cost_MBL2 : -1.1512e-4    # cost per MBL^2 [$/kN^2]
     cost_MBL3 :  3.3701e-9    # cost per MBL^3 [$/kN^3]
 
   swivel     :  
@@ -86,7 +86,7 @@ ConnectProps:
     # MBL       :     # MBL offset [kN]
     # MBL_m     :     # minimum breaking load per mass [kN/kg]
     cost_MBL  :  6.9072e-1    # cost per MBL [$/kN]
-    cost_MBL2 :  4.4545e-5    # cost per MBL^2 [$/kN^2]
+    cost_MBL2 : -4.4545e-5    # cost per MBL^2 [$/kN^2]
     cost_MBL3 :  1.5231e-9    # cost per MBL^3 [$/kN^3]
 
   buoy       :