From 4ece666cade0d084d3662714ad76c299a42e3d3b Mon Sep 17 00:00:00 2001
From: FEA-eng <59876896+FEA-eng@users.noreply.github.com>
Date: Thu, 11 Apr 2024 19:12:44 +0200
Subject: [PATCH] FEM: Update write_constraint_heatflux.py

---
 .../Fem/femsolver/calculix/write_constraint_heatflux.py  | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/Mod/Fem/femsolver/calculix/write_constraint_heatflux.py b/src/Mod/Fem/femsolver/calculix/write_constraint_heatflux.py
index 50b2238bea80..799f9c408d08 100644
--- a/src/Mod/Fem/femsolver/calculix/write_constraint_heatflux.py
+++ b/src/Mod/Fem/femsolver/calculix/write_constraint_heatflux.py
@@ -54,6 +54,15 @@ def write_meshdata_constraint(f, femobj, heatflux_obj, ccxwriter):
             heatflux_obj.AmbientTemp,
             heatflux_obj.FilmCoef * 0.001
         )
+
+    elif heatflux_obj.ConstraintType == "Radiation":
+        heatflux_key_word = "RADIATE"
+        heatflux_facetype = "R"
+        heatflux_values = "{:.13G},{:.13G}".format(
+            heatflux_obj.AmbientTemp,
+            heatflux_obj.Emissivity
+        )
+
     elif heatflux_obj.ConstraintType == "DFlux":
         heatflux_key_word = "DFLUX"
         heatflux_facetype = "S"