no mesh display with no_gui mode

[millerj97]

🔍 Before submitting the issue

• I have searched among the existing issues
• I am using a Python virtual environment

🐞 Description of the bug

according to;

pyfluent/src/ansys/fluent/core/launcher/launch_options.py

Line 174 in b75d824

self.NO_GUI: ("gu",),

the ui_mode NO_GUI should represent fluent -gu mode

With the below commands in fluent pyconsole session in -gu mode, the mesh is displayed in a new window. However when running the same script in pyfluent standalone, no mesh is displayed;

graphics = solver.settings.results.graphics

solver.settings.results.graphics.mesh.create()
mesh_object = solver.settings.results.graphics.mesh.create(name="hot-inlet")

mesh_object.surfaces_list = ['hot-inlet']
mesh_object.options.nodes = True
mesh_object.options.edges = True
graphics.views.auto_scale()
graphics.views.restore_view(view_name="top")

mesh_object.display()

📝 Steps to reproduce

run the below in a script in pyfluent standalone, then fluent -gu mode

import ansys.fluent.core as pyfluent
import os
from ansys.fluent.core import UIMode

filename = "lightweight_case"
if not os.getenv("FLUENT_PROD_DIR"):
    solver = pyfluent.launch_fluent(
        mode="solver",
        dimension=3,
        precision="double",
        processor_count=1,
        ui_mode=UIMode.NO_GUI
    )

from ansys.fluent.core import examples

import_file_name = examples.download_file(
    "mixing_elbow.msh.h5",
    "pyfluent/mixing_elbow",
    save_path=os.getcwd(),
)
solver.settings.file.read_case_lightweight(file_name="mixing_elbow.msh.h5")

graphics = solver.settings.results.graphics

solver.settings.results.graphics.mesh.create()
mesh_object = solver.settings.results.graphics.mesh.create(name="hot-inlet")

mesh_object.surfaces_list = ['hot-inlet']
mesh_object.options.nodes = True
mesh_object.options.edges = True
graphics.views.auto_scale()
graphics.views.restore_view(view_name="top")

mesh_object.display()

💻 Which operating system are you using?

Linux

📀 Which ANSYS version are you using?

No response

🐍 Which Python version are you using?

3.10

📦 Installed packages

ansys-api-fluent==0.3.36
ansys-api-platform-instancemanagement==1.1.3
ansys-api-tools-filetransfer==0.1.2
ansys-fluent-core==0.38.dev4
ansys-platform-instancemanagement==1.1.2
ansys-tools-common==0.4.1
ansys-tools-filetransfer==0.2.1
ansys-units==0.10.1
certifi==2026.1.4
charset-normalizer==3.4.4
click==8.3.1
defusedxml==0.7.1
Deprecated==1.3.1
docker==7.1.0
googleapis-common-protos==1.72.0
grpcio==1.76.0
grpcio-health-checking==1.62.3
grpcio-status==1.62.3
idna==3.11
importlib_metadata==8.7.1
joblib==1.5.3
nltk==3.9.2
numpy==2.2.6
pandas==2.3.3
platformdirs==4.5.1
protobuf==4.25.8
python-dateutil==2.9.0.post0
pytz==2025.2
PyYAML==6.0.3
regex==2026.1.15
requests==2.32.5
scooby==0.11.0
six==1.17.0
tqdm==4.67.1
typing_extensions==4.15.0
tzdata==2025.3
urllib3==2.6.3
wrapt==2.0.1
zipp==3.23.0

[millerj97]

@prmukherj with this gui mode, would it be expected that the mesh should be displayed? Thanks