Grid Project:   Barrow Ice Wedge Polygon 06 V3.0.1 (fine scale)

Purpose of Project

These meshes were developed in support of the Arctic Next Generation Ecosystem Experiment (NGEE-Arctic) Project and LANL Laboratory Directed project LDRD20120068DR. These two projects share a need for high quality computational meshes for use in fine-scale modeling of thermal hydrology in ice-wedge polygon landscapes.

Version 3.0.1 is a modification of the Version 3.0 mesh which adds corner faces to the exodus file.

This version has a correction to file write_exo.lgi and now has two additional layers for corner and top faces.

The following are additional faces that were added to the V3.0.0:

  -----------------
  layer 7 -> corner side faces
  layer 8 -> corner top faces
  -----------------

Full Stacked Mesh with Ice Wedge 6 material layers plus ice material	Full Stacked Mesh with Ice Wedge Cut to show internal materials
Mesh and Ice Wedge with moss and organic layers removed	Ice Wedge

Mesh Input Parameters V3.0.2

General Description

Same as V03.0.1 using Polygon #06.

Material Ice Wedge

We want the top of the ice wedge to be at 50 cm depth (corresponds to the top of the inorganic layer).

Top of wedge starts at top of mineral layer (replaces cells only in materials 5 and 6)

Top wedge width (distance from polygon) is aprox 1.2

Depth from top of ice to tip is aprox 2.8

Outside Boundaries (Exodus side sets)

The side sets defined are top, bottom, and sides (corresponding to the 4 sectors within 45 degrees of each direction). The exodus file contains following surface facesets:

• 1 = bottom
• 2 = top
• 3 = East     right
• 4 = North   back
• 5 = West    left
• 6 = South   front
• 7 = Corner side
• 8 = Corner top

Faces 7 and 8 were introduced to V3.0.1

Output Mesh Description

Output is a stacked prism mesh written as two Exodus files; a single material mesh and a multi-material Mesh with 7 materials (6 layers plus the Ice Wedge). Files are written in formats; Exodus II (.exo), AVS (.inp), and GMV (.gmv)
Final Mesh files: mesh_fsets.exo, mesh_fsets.gmv, mesh_fsets.inp
Final Mesh with single material: mesh_fsets_1mat.exo, mesh_fsets_1mat.gmv, mesh_fsets_1mat.inp

Mesh Element Type:             prism
Mesh Software Used: LaGriT, ExodusII

Total nodes:       168489       
Total elements:    319488     
Total Volume:      0.1196474E+04      

from file write_exo.out.txt:
Mesh Extents (Meters):
        MIN              MAX             DIFFERENCE    
 x    1.178399963E+02  1.355899963E+02 1.775000000E+01     
 y    4.647000122E+01  6.374094009E+01 1.727093887E+01     
 z   -1.000000000E+00  4.837420940E+00 5.837420940E+00     

from file write_exo.out.txt:
SUMMARY VOLUME/AREA METERS of ELEMENT COLORS (BLOCKS) 
Color    Num. Elements   Volume          Fractional Volume                    
    1        6656          0.4250232E+01     0.003552299
    2       29952          0.3825209E+02     0.031970687
    3       29952          0.3825219E+02     0.031970772
    4       19968          0.2550139E+02     0.021313791
    5       43224          0.6874194E+02     0.057453786
    6      149993          0.8890656E+03     0.743071576
 7/30       39743          0.1324103E+03     0.110667090       

from file stack_full_poly.out.txt:
SUMMARY ELEVATIONS at LAYER TOPS (METERS)
        MIN          MAX       DIFF MAX below (thickness)   
    1 4.429399967  4.837420940   .02
    2 4.409399967  4.817420940   .18
    3 4.229399967  4.637420940   .18
    4 4.049399967  4.457420940   .12
    5 3.929399967  4.337420940   .50
    6 3.429399967  3.837420940  4.99 
      (Bottom is flat at -1.0)

Mesh Layer Definitions (meters)

ID Layer Name Layer Thick Layer Vertical Cells Layer Volume Min Top Elevation Max Top Elevation 1 moss(top) 0.02 2 x .01 7.936425 4.50 4.99 2 upper organic 0.18 9 x .02 79.36425 4.48 4.97 3 upper mineral 0.18 9 x .02 71.42801 4.30 4.79 4 lower organic 0.12 6 x .02 47.61855 4.12 4.61 5 lower mineral 0.50 20 x .025 146.4469 4.00 4.49 6 deep mineral 2.2 - 4.8 50 x .09 1745.817 3.50 3.99 7/30 ice 0.00 - 2.3 variable 182.7924 4.49 4.00

Boundary Side Sets
Corners: purple side (ss_c_side) has 7 faces black  top  (ss_c_top)  has 8 faces
Top and Bottom: neon-pink top (num_side_ss2) has 3328 faces neon-green bottom (num_side_ss1) has 3328 faces	Sides: red east right (num_side_ss3) has 3072 faces yellow north back (num_side_ss4) has 3072 faces green west left (num_side_ss5) has 3072 faces blue south front (num_side_ss6) has 4608 faces

Project Archive Location

Full Set of files:

/scratch/sft2/lucia/grid_gen/arctic/arctic_fine_v3_1_poly06/ 

tar file was not sent, but was created (*tgz):
-rw-r--r--  1 lucia  sft  108517232 Feb 24 16:03 mesh_fine_poly06_v03_0_2.tgz

Created from clean subdirectory with mesh files:
drwxr-xr-x   3 lucia  sft         8192 Feb 24 15:58 v3_1_p06


LaGriT faceset files with elem number and face (*.faceset):
-rw-r--r--  1 lucia  sft  40039 Feb 20 14:53 fs_1_bot.faceset
-rw-r--r--  1 lucia  sft  36711 Feb 20 14:53 fs_2_top.faceset
-rw-r--r--  1 lucia  sft  43111 Feb 20 14:53 fs_3_rig.faceset
-rw-r--r--  1 lucia  sft  40039 Feb 20 14:53 fs_4_bac.faceset
-rw-r--r--  1 lucia  sft  40039 Feb 20 14:53 fs_5_lef.faceset
-rw-r--r--  1 lucia  sft  64615 Feb 20 14:53 fs_6_fro.faceset
-rw-r--r--  1 lucia  sft    223 Feb 20 14:53 fs_7_Csides.faceset
-rw-r--r--  1 lucia  sft    224 Feb 20 14:53 fs_8_Ctop.faceset

Mesh and faceset files for 6 Materials (mesh_fsets.*):
-rw-r--r--  1 lucia  sft  14436152 Feb 20 14:53 mesh_fsets.exo
-rw-r--r--  1 lucia  sft  25281128 Feb 20 14:53 mesh_fsets.gmv
-rw-r--r--  1 lucia  sft  47828381 Feb 20 14:53 mesh_fsets.inp

Mesh and faceset files for 1 Material (mesh_fsets_1mat.*):
-rw-r--r--  1 lucia  sft  14434180 Feb 20 14:53 mesh_fsets_1mat.exo
-rw-r--r--  1 lucia  sft  23142288 Feb 20 14:53 mesh_fsets_1mat.gmv
-rw-r--r--  1 lucia  sft  47659892 Feb 20 14:53 mesh_fsets_1mat.inp

LaGriT output files contain information reported during the run (*.out.txt):
-rw-r--r--  1 lucia  sftus    4963 Nov  4 15:31 get_boundary_pts.out.txt
-rw-r--r--  1 lucia  sftus    4961 Nov  4 15:31 get_poly_surf.out.txt
-rw-r--r--  1 lucia  sftus   20419 Nov  4 15:32 interpolate_icewedge.out.txt
-rw-r--r--  1 lucia  sftus  105831 Nov  4 15:31 make_poly10006.out.txt
-rw-r--r--  1 lucia  sftus    5943 Nov  4 15:31 merge_ice.out.txt
-rw-r--r--  1 lucia  sftus  269338 Nov  4 15:31 stack_full_poly.out.txt
-rw-r--r--  1 lucia  sftus  105639 Nov  4 15:32 write_exo.out.txt

Mesh images:
/scratch/sft2/lucia/grid_gen/arctic/arctic_fine_v3_1_poly40/images

Input Data files:

 /scratch/sft2/lucia/grid_gen/arctic/arctic_fine_v3_1_poly40/input/

 -rw-r--r--  2 lucia sftus 30928912 Apr 18 13:59 lidar_site3.inp
 -rw-r--r--  1 lucia sftus      123 Apr 18 13:59 poly10001.avs
 -rw-r--r--  1 lucia sftus      178 Apr 18 13:59 poly10002.avs 
						...
 -rw-r--r--  1 lucia sftus      155 Apr 18 13:59 poly10071.avs
 -rw-r--r--  1 lucia sftus      190 Apr 18 13:59 poly10072.avs

Main Work Directory for Polygon Meshing Method:

/scratch/sft2/lucia/grid_gen/arctic/arctic_fine_v3_1_poly06/images

Links to Images and Project Details

Input and Output Files Running LaGriT to create the Mesh

These are LaGriT input (.lgi) and output (outx3dgen) files used in creating this mesh. The output files provide good information about the data and mesh, including min and max values of mesh attributes.
The complete set of scripts and input files are in /scratch/sft2/lucia/grid_gen/arctic/arctic_fine_v3_1_poly06. The output files for various mesh versions are in /scratch/sft2/lucia/grid_gen/arctic/.

Step 1: Create Ice Object from Polygon (make_poly.lgi)     Input       Output

Step 2: Create and stack layers into full mesh (stack_full_poly.lgi)     Input       Output

Step 3: Interpolate Ice Material on to Full Stacked Mesh (interpolate_icewedge.lgi)     Input       Output

Step 4: Create facesets and write final Exodus files (write_exo.lgi)     Input       Output

 

Grid Team Contacts