Altair nanoFluidX 2021 Release Notes
Highlights
- Tartakovsky single phase surface tension model
- The Tartakovsky model allows for easier definition of the surface tension coefficient as it is designed so that the numerical value exactly corresponds to the physical value. This should, in principle, remove iterative tuning of the single phase surface tension parameters, provided sufficient resolution and adequate speed of sound/compressibility.
New Features
- Tartakovsky single phase surface tension model
- The Tartakovsky model allows for easier definition of the surface tension coefficient as it is designed so that the numerical value exactly corresponds to the physical value. This should, in principle, remove iterative tuning of the single phase surface tension parameters, provided sufficient resolution and adequate speed of sound/compressibility.
Enhancements
- Self-generated point cloud
- Ability to export a self-generated point cloud (hex-mesh based) with interpolated variable values on the points.
- Restart/continue files
- Restart/continue files are no longer stored in the same folder as the main output, but have their own RECON folder.
- Section average velocity
- Added section average velocity to surface and flow rate probes, which allows for better understanding of the measured mass flow at a given location.
- Walltime measurement interface
- Revised walltime measurement interface
- Source_nFX_environment.sh file
- Enhancement of the source_nFX_environment.sh file to improve diagnostics in case of trouble.
Known Issues
- Adhesion coefficient
- Adhesion coefficient needs to be calibrated against experimental results or visually estimated.
- Large negative pressures
- Large negative pressures cannot be accurately handled by the current weakly compressible formulation without total particle volume preservation.
Resolved Issues
- Improvements to the time step calculation when thermal transport is enabled.