From 81cfc8f1f4c1914728efc135005a38cb9b8ec338 Mon Sep 17 00:00:00 2001
From: Corey Adams <6619961+coreyjadams@users.noreply.github.com>
Date: Tue, 17 Feb 2026 22:47:46 +0000
Subject: [PATCH] Ensure default values for volume field non-dimensionalization

---
 .../external_aero_volume_data_processors.py                   | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/examples/external_aerodynamics/external_aero_volume_data_processors.py b/examples/external_aerodynamics/external_aero_volume_data_processors.py
index 9c71aa7..f2854a7 100644
--- a/examples/external_aerodynamics/external_aero_volume_data_processors.py
+++ b/examples/external_aerodynamics/external_aero_volume_data_processors.py
@@ -122,8 +122,8 @@ def filter_volume_invalid_cells(
 
 def non_dimensionalize_volume_fields(
     data: ExternalAerodynamicsExtractedDataInMemory,
-    air_density: PhysicsConstantsCarAerodynamics.AIR_DENSITY,
-    stream_velocity: PhysicsConstantsCarAerodynamics.STREAM_VELOCITY,
+    air_density: float = PhysicsConstantsCarAerodynamics.AIR_DENSITY,
+    stream_velocity: float = PhysicsConstantsCarAerodynamics.STREAM_VELOCITY,
 ) -> ExternalAerodynamicsExtractedDataInMemory:
     """Non-dimensionalize volume fields."""