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cffview

CFF is an abbreviation for Ansys Common Fluids Format.

A command-line tool for viewing Ansys Fluent .cas.h5 / .msh.h5 / .dat.h5 files without opening Fluent.

  • Read solver settings, materials, boundary conditions, discretisation schemes, and more directly from the HDF5 file.
  • Visualise mesh or data with PyVista.

Installation

PyPI

pip install cffview

From source

git clone https://github.com/preamer/cffview.git
cd cffview
pip install .

Usage

[!IMPORTANT] Only tested with Ansys Fluent 25R2!

cffview <file> [options]

Options

Option Description
--version Print the Fluent version of file
--extract Dump raw Scheme settings to general.scm and boundary.scm
--mesh, --showmesh Visualise the mesh interactively with PyVista
--data, --plotdata Plot the data interactively with PyVista (may not work, depending on vtkFLUENTCFFReader)
--solver Solver type, time, dimension, precision, turbulence model, energy, radiation, gravity
--mat, --materials Material properties
--bd, --boundary Boundary condition settings
--interfaces Mesh interfaces settings
--ne, --named-expressions Named expressions
--disc Discretisation schemes and relaxation factors
--rd, --report-definitions Report definitions
--plotsets Plot sets
--monitorsets Monitor sets
--residuals Residual settings
--iter Iteration / time-step settings
--surfaces Surfaces settings
--contours Graphics contours settings
--vectors Graphics vectors settings
--xy-plot Graphics xy-plot settings
--save Save the output to file_name.json (if file_name not specified, it is the same as input file)
--plot plot data file, support --out and --xy, if not specified, infer from file extension
--out plot .out file, used with --plot
--xy plot .xy file, used with --plot
--dat plot .dat.h5 file's residuals data, used with --plot

Multiple flags can be combined freely. Case settings flags (--solver, --mat, etc.) apply to .cas.h5 files only.

Examples

# Show all settings and save to JSON
cffview case.cas.h5 --save

# Show solver configuration and boundary conditions
cffview case.cas.h5 --solver --bd

# Visualise the mesh
cffview case.cas.h5 --mesh
cffview mesh.msh.h5

# Visualise the data
cffview case.cas.h5 --data

# Check the Fluent version of file
cffview case.cas.h5 --version

# Extract raw Scheme strings for manual inspection
cffview case.cas.h5 --extract

Demo

https://github.com/user-attachments/assets/7f97b559-87fa-4822-be9f-4e82b8c5cab6

License

BSD-3-Clause

Release files for cffview 0.4.1

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