Quick 4.32 (steady-state rectangular grid solver)
GPU Quick 5.1 solver
Dyn 4.445 (dynamic solver, major bug fix included)
||September 2010 (updated June 11th, 2017)
New advanced feature were added to the new CMLAir
interface (version 8.1), there is a third mode called "DLUL
Mode" now available for engineers who need to simulate
Load/Unload/Shock cases, also, you can view post processing
output results just like Static and Dynamic modes, reading
the help section regarding the new mode is highly
- Dlulshock ver6 solver were added to the new interface.
- 3 example files were added (Load, Unload and Shock
- Help file were updated and new sections were added.
- CMLAir 8.1 is fully compatible with old cases (.cml
- Few bugs were removed in the DLUL mode, also, new
input parameters added to the Run Setup/Configuration
- Also, there is two DLUL solver versions, IA32 (for 32
bit processors) and x64 bit (64 bit processors) with speed
improvement inside the setup package.
- DLUL Run Setup/Actuator page added in this updated version.
- GPU Quick solver version 5.1 added along with supporting dll
- Dynamic code bug fixed with regards to disk waviness output
- Quick 4.32 has new function to check and stop at first encountered NaN error
||July 15, 2010
(major bug fix for the Quick Mode in the interface when you use
(major bug fix for the Dynamic
Solver when calculating contact forces)
This release is the same as the older CMLAir Version
7.0.5 with slight modifications, a newer Quick solver
(Quick 432) to replace the old solver, new Dynamic
solver (Dyn 444) and few additions to the help file
(Quick output files section) have been added to the
CMLAir Interface, all the other cool features from
CMLAir ver. 7.0.5 (as shown below) remained the same.
New features in this version:
- New paragraph added and small correction
implemented to the help file.
- New Quick solver included, this new solver capable
of producing Slider-Disk (in nm) spacing matrix
automatically for all the x-y points in the mesh, for every radii of the
- New Dynamic solver added to replace the old
solver, this solver have a bug fix for minimum spacing
||August 14, 2008
This release incorporates the new CML Finite Element Solver version 0.95 into
the interface. The speed of the Finite Element solver has been improved since
the release of version 0.92. Most features supported by Quick 4 are not fully
implemented in the Finite Element Solver.
Features not implemented in the Finite Element Solver and CMLAir:
- Elastic-Plastic contact model
- User defined slip model
- Ramp rails
- Rails that lie below the base recess of the slider.
- Slider geometry works but it's a bit different than CMLAir/Quick 4. In CMLAir,
if a rail with a deeper recess, overlaps a rail with a shallower recess. The
recess for the overlapped region will be determined by which rail has a larger
rail index value. In the finite element solver, the overlapped region will
automatically be at the shallower recess.
- User defined geometry and regional height adjustments
- Use existing grid input option (ioldg)
- Humidity simulations
- Massflow Analysis
- Shear Analysis
- Pressure Analysis
- Lube Depletion
- Massflow plot
||May 23, 2008 (updated 7/01/08)
This release is a small update to CMLAir, Quick 4 and Dyn
CMLAir 7.04 features and changes
- Modified the air parameters and altitudes. A PowerPoint presentation describing
the changes can be found here.
- Small changes to dynamic solver and interface to better reflect irrelevant
parameters for Finite Element simulations.
- Minor bug fixes and improvements (fixed humidity edit box 6/23/08).
||May 2, 2008
Element Solver (version 0.92)
This is a development release of CML's finite element air bearing solver. The
solver is still in heavy development but we wanted to give our members a peek
at the work we're doing to improve our solvers. The solver can solve many of
the air bearing designs that Quick 4 has trouble with. It's still a bit rough
around the edges but getting better every day.
Changes in this release:
- Adaptive meshing has been reworked and should be more robust and easier to
- Meshing.dat has been modified
- The solver will attempt to describe lines that define the rail and outer
wall boundaries for the mesher. This results in more accurate
representations of the slider.
- Output files have been modified. The intermediate sliderx files are now
deleted at the end of the simulation. The new output files are described
in the readme file.
- The y coordinate of the slider nodes has been corrected. Previously the
nodes output by the solver were a mirror image of the slider in the y
||November 3, 2005 (updated 7/06/2010)
CMLAir 6.57 New Features and Changes:
- Quick 4 is significantly faster and more stable for almost all cases. The speed
improvements have been achieved by modifying the grid generation and multigrid
portions of the solver.
- The static results table has been improved.
- The ability to view real-time simulation results while a simulation is running
has been added. This feature is available from the options menu in the solver
- It is now possible to zoom in and out in the rail design window.
- New User Defined Geometry allows multiple regions to be specified.
- BUG FIX: A bug in the interface affecting the importing the xf0 (pitch offset)
parameter of dynamics.def has been fixed. Things should be importing correctly
- BUG FIX: (12/6/05) User defined geometry is now generated correctly in the
dynamic solver. Also, Dyn439.exe now outputs geom.dat which can be used to
cHeck the slider geometry.
- BUG FIX: (7/17/06) Interface should now support an unlimited number of rails
and rail points.
||If you plan to run simulations on a Windows95/98/NT computer, the above file is
the only one you need. Download the self-extracting archive and run it.
If you plan to use the remote run feature with a UNIX machine, or you wish to
use a solver that has been optimized for a specific processor, you will need to
use one or more of the following solvers.
- A more complete description of the CML Air Bearing Dynamic
Solver exists, including information regarding the L/UL solver.
- NOTE: CMLAir is not compatible with the CML Dynamic L/UL Solver.
||The updated manual is distributed as on-line help with CMLAir. An older version
is also available as an Adobe Acrobat document.