diff --git a/src/Mod/Fem/FemInputWriterCcx.py b/src/Mod/Fem/FemInputWriterCcx.py
index 9dc1bdcff4..a6ea3231de 100644
--- a/src/Mod/Fem/FemInputWriterCcx.py
+++ b/src/Mod/Fem/FemInputWriterCcx.py
@@ -63,6 +63,7 @@ class FemInputWriterCcx(FemInputWriter.FemInputWriter):
         self.main_file_name = self.mesh_object.Name + '.inp'
         self.file_name = self.dir_name + self.main_file_name
         self.FluidInletoutlet_ele = []
+        self.fluid_inout_nodes_file = self.dir_name + self.mesh_object.Name + '_inout_nodes.txt'
         print('FemInputWriterCcx --> self.dir_name  -->  ' + self.dir_name)
         print('FemInputWriterCcx --> self.main_file_name  -->  ' + self.main_file_name)
         print('FemInputWriterCcx --> self.file_name  -->  ' + self.file_name)
@@ -111,7 +112,7 @@ class FemInputWriterCcx(FemInputWriter.FemInputWriter):
         if self.fluidsection_objects:
             if is_fluid_section_inlet_outlet(self.ccx_elsets) is True:
                 inpfile.close()
-                FemMeshTools.use_correct_fluidinout_ele_def(self.FluidInletoutlet_ele, self.file_name)
+                FemMeshTools.use_correct_fluidinout_ele_def(self.FluidInletoutlet_ele, self.file_name, self.fluid_inout_nodes_file)
                 inpfile = open(self.file_name, 'a')
 
         # constraints independent from steps
@@ -262,7 +263,7 @@ class FemInputWriterCcx(FemInputWriter.FemInputWriter):
         # Fluid section: Inlet and Outlet requires special element definition
         if self.fluidsection_objects:
             if is_fluid_section_inlet_outlet(self.ccx_elsets) is True:
-                FemMeshTools.use_correct_fluidinout_ele_def(self.FluidInletoutlet_ele, name + "_Node_Elem_sets.inp")
+                FemMeshTools.use_correct_fluidinout_ele_def(self.FluidInletoutlet_ele, name + "_Node_Elem_sets.inp", self.fluid_inout_nodes_file)
 
         # constraints independent from steps
         if self.planerotation_objects:
@@ -968,10 +969,12 @@ class FemInputWriterCcx(FemInputWriter.FemInputWriter):
         f.write('\n***********************************************************\n')
         f.write('** FluidSection constraints\n')
         f.write('** written by {} function\n'.format(sys._getframe().f_code.co_name))
-        if os.path.exists("inout_nodes.txt"):
-            inout_nodes_file = open("inout_nodes.txt", "r")
+        if os.path.exists(self.fluid_inout_nodes_file):
+            inout_nodes_file = open(self.fluid_inout_nodes_file, "r")
             lines = inout_nodes_file.readlines()
             inout_nodes_file.close()
+        else:
+            print("1DFlow inout nodes file not found: " + self.fluid_inout_nodes_file)
         # get nodes
         self.get_constraints_fluidsection_nodes()
         for femobj in self.fluidsection_objects:  # femobj --> dict, FreeCAD document object is femobj['Object']
diff --git a/src/Mod/Fem/FemMeshTools.py b/src/Mod/Fem/FemMeshTools.py
index 7facda1b2f..f030cbaaad 100644
--- a/src/Mod/Fem/FemMeshTools.py
+++ b/src/Mod/Fem/FemMeshTools.py
@@ -1494,7 +1494,7 @@ def write_D_network_element_to_inputfile(fileName):
     f.close()
 
 
-def use_correct_fluidinout_ele_def(FluidInletoutlet_ele, fileName):
+def use_correct_fluidinout_ele_def(FluidInletoutlet_ele, fileName, fluid_inout_nodes_file):
     f = open(fileName, 'r')
     cnt = 0
     line = f.readline()
@@ -1523,7 +1523,8 @@ def use_correct_fluidinout_ele_def(FluidInletoutlet_ele, fileName):
     f.seek(0)
     cnt = 0
     elem_counter = 0
-    inout_nodes_file = open("inout_nodes.txt", "w")
+    print('1DFlow inout nodes file: ' + fluid_inout_nodes_file + '\n')
+    inout_nodes_file = open(fluid_inout_nodes_file, "w")
     for line in lines:
         new_line = ''
         for i in range(len(FluidInletoutlet_ele)):
diff --git a/src/Mod/Fem/importCcxFrdResults.py b/src/Mod/Fem/importCcxFrdResults.py
index 909ca0e232..49c370fc2b 100644
--- a/src/Mod/Fem/importCcxFrdResults.py
+++ b/src/Mod/Fem/importCcxFrdResults.py
@@ -124,15 +124,16 @@ def importFrd(filename, analysis=None, result_name_prefix=None):
 def readResult(frd_input):
     print('Read results from: ' + frd_input)
     inout_nodes = []
-    if os.path.exists("inout_nodes.txt"):
-        print('We have found a inout_nodes.txt file. We gone read it and delete it afterwards')
-        f = pyopen("inout_nodes.txt", "r")
+    inout_nodes_file = frd_input.rsplit('.', 1)[0] + '_inout_nodes.txt'
+    if os.path.exists(inout_nodes_file):
+        print('Read special 1DFlow nodes data form: ' + inout_nodes_file)
+        f = pyopen(inout_nodes_file, "r")
         lines = f.readlines()
         for line in lines:
             a = line.split(',')
             inout_nodes.append(a)
         f.close()
-        os.remove("inout_nodes.txt")
+        print(inout_nodes)
     frd_file = pyopen(frd_input, "r")
     nodes = {}
     elements_hexa8 = {}