ANSYS, Inc. Release Notes
CFX |
ANSYS, Inc. Release Notes
New features and enhancements to ANSYS CFX and CFD-Post introduced in Release 14.0 are highlighted in this section.
Parallel Processing
The HP MPI parallel communications method has been replaced by the Platform MPI method, which is fundamentally the same, and you should not see any change in performance. When loaded into ANSYS CFX, old cases that used HP MPI will automatically be updated to use Platform MPI.
The MPICH2 parallel communications method has been withdrawn from use on Windows. When loaded into ANSYS CFX, old cases that used MPICH2 will automatically be updated to use Platform MPI.
New features and enhancements to the CFX-Solver introduced in Release 14.0 are highlighted in this section.
To improve the efficiency of calculations for turbomachinery applications, the Time Transformation and Fourier Transformation methods for Transient Blade Row cases have been introduced.
The default intersection method at Generalized Grid Interfaces has been changed from the Bitmap method to the Direct method. This should improve the accuracy of intersection and performance.
Prior to this release, the CFX-Solver determined the license it would check out based on a set of internal algorithms. This sometimes was inconsistent with the license preferences, as these were not necessarily respected by the solver.
In Release 14, license checkouts use the license preferences and follow the checkout order you specify (consistent with product capability levels), which enables you to control the license checkout order.
New features and enhancements to CFX-Solver Manager introduced in Release 14.0 are highlighted in this section.
In previous versions of ANSYS CFX, CGNS 2.4 ADF files were written by CFX-Solver Manager and scripts provided with CFX. Starting with Release 14.0, the capability has been extended so that you can also write to CGNS 3.0 files in either ADF or HTF5 format. Noise source strength files written by CFX-Solver are still exported using CGNS 2.4.
In previous versions of ANSYS CFX, CGNS files that were written by CFX-Solver Manager and then loaded into CFD-Post had variable names that were limited to 32 characters. Whenever the name of the variable exceeded 32 characters, the internal name for the variable, which is shorter but more cryptic, was written instead. Starting with Release 14.0, CGNS files written by CFX-Solver Manager may optionally use a new additional data tag that is not subject to the 32-character limit, and that holds the ANSYS CFX Solver Name for each variable. CFD-Post reads the new tag in preference to the old tag, if the new tag exists.
New features and enhancements to CFD-Post introduced in Release 14.0 are highlighted in this section.
Hub-to-Shroud Plots
You can create hub-to-shroud plots based on two streamwise locations (or blade aligned, or blade aligned linear). The plots will show a difference in the circumferentially averaged variable between the two locations.
Vectors of Particle Variables on Particle Tracks
You can plot vectors of particle variables on FLUENT particle tracks.
High-definition Movie Output
You can create high-definition movies ("HD Video 720p" and "HD Video 1080p") that play on all typical players.
Transient Blade Row Post-processing
Solution variables are loaded and are available for plots.
The file behaves like a transient case. Timestep switching, time charts, and animations are supported. In addition, uniform and custom timestep sampling is supported.
FLUENT Internal Combustion (IC) Engine Cases
IC engine cases with changing topology are now supported. Boundaries and domains that are not available at the selected timestep are greyed out in the Outline tree.
CGNS Files
Face based boundary definition (in addition to nodal definition) is now supported.
Files written with CGNS library version 3.0 or below are now supported.
Time Chart Performance
The calculation of time charts has been sped up significantly, in cases where unrelated objects (such as streamlines, planes, and so on) are present in the state.
CFD-Post installation Size
The disk size of the stand-alone CFD-Post installation has been significantly reduced.
No organizational or display mechanism changes have been made to the ANSYS CFX documentation in this release.