AFLR3 Output Messages
The output messages that AFLR3 generates identify progress and vary
as the program enters different phases. The primary phases are described below.
ANBL3 Library Messages
AFLR3 has the capability to generate boundary-layer (BL),
structured-layer (SL), or specified-normal-spacing (SNS) regions adjacent to
specific surfaces. If BL/SL/SNS grid generation is requested
then the ANBL3 library is used and the different phases include the
following.
ANBL3 BLC: BL BOUNDARY CONDITIONS
CHECK
Check BL/SL/SNS related parameters.
ANBL3
BLG: BL NODE GENERATION
Generate all grid nodes in the BL region.
ANBL3
BLS: BL SURF GRID GENERATION
Re-generate surface grid on planes that intersect the
BL/SL/SNS region, typically symmetry planes, if there are any.
ANBL3
BLM: BL VOLUME GRID MERGE
Create elements and merge BL/SL/SNS region with isotropic
region.
AFLR3 Library Messages
During isotropic grid generation the AFLR3 library is used and the
different phases include the following.
AFLR3 IC :
INPUT SURFACE GRID CHECK
Check the input surface grid and isotropic grid generation
parameters.
AFLR3
IG : INITIAL VOLUME GRID GENERATION
Generate an initial tetrahedral grid
that includes the boundary surface faces and nodes. If BL/SL/SNS grid
generation is selected then the boundary surface includes
the interface surface between the BL/SL/SNS and isotropic regions and
re-generated surfaces if there are planes that intersect the BL/SL/SNS region.
AFLR3 IGb:
If difficulties arise during boundary surface face recovery
for generation of the initial grid then the problem
areas are treated as isolated regions and progressively riskier procedures are
used. An output FAIL file named case_name.SUBGRID.FAIL.surf
is temporarily written and then deleted if the sub-grid procedures are
successful. Entering this phase is not necessarily an indication that there are
problems. However, if a considerable amount of CPU time has elapsed during the
sub-grid procedure then a failure is often the outcome. If the job is killed then the temporary FAIL file can be used to help
diagnosis.
AFLR3
SG : SOURCE NODE GRID GENERATION
If the option to create a source node grid for interpolation
of the local length scales is selected then generate a
triangulation that includes the boundary surface nodes and input source nodes.
AFLR3
GG : ISOTROPIC VOLUME GRID GENERATION
Generate isotropic grid nodes.
AFLR3
GGi:
Create new nodes in clusters of ideally placed nodes at
centroids of large elements that have all edges much longer than the
distribution function.
AFLR3
GGs:
Create new nodes in clusters of ideally placed nodes for
length scale refinement of elements with large length scales.
AFLR3
GGo:
Create new seed nodes in clusters of ideally placed nodes
centered at the oct-tree bin centroids for the source nodes.
AFLR3
GGc:
Generate isotropic grid nodes using centroid point
placement.
AFLR3
GG :
Generate isotropic grid nodes using advancing-front point
placement.
AFLR3
QI : QUALITY IMPROVEMENT
Improve the final isotropic grid quality using smoothing and
local reconnection.
AFLR3
QRG : QUALITY GRID REGENERATION
Re-generate low-quality grid regions.
AFLR4 Library Messages
If BL/SL/SNS grid generation is requested and if there are surfaces that
intersect the BL/SL/SNS region then the AFLR4 library is used to rebuild
those surfaces and the output for generating surface uv
mapping (or determining that the surface is a plane) will appear before BL grid
generation. After that, output will appear (along with that for AFLR2
for surface grid re-generation and is simply the number of nodes and faces
generated on each surface. One line is generated for each rebuild surface. If
the surface is planar then output will only appear for AFLR2.
AFLR4 :
Generate surface uv mapping
and surface grid.
AFLR2 Library Messages
If BL/SL/SNS grid generation is requested and if there are surfaces that
intersect the BL/SL/SNS region then the AFLR2 library is used as part of
the process to rebuild those surfaces and the output is simply the number of
nodes and faces generated on each surface. One line is generated for each
rebuild surface.
AFLR2 :
Generate surface grid in uv
mapped space.