Grid Project: Barrow Ice Wedge Polygon

Grid Team Member:	Lucia Short
Grid Versions:	Version 01: Prototype of a single polygon
Data Source:	LiDAR
Delivered To:	Scott Painter
Date Completed:	V01 - 05/01/2013

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.

This is prototype 3D mesh of a wedge polygon based on polygon #40 generated using LiDAR data set. Two Exodus II mesh files are written, one multi-material, and one single material.

Click here for Selected IMAGES and Mesh Notes

Click here for Gallery of all IMAGES

Mesh Input Parameters

General Description

This is prototype 3D mesh of an ice wedge with total number of cells under 1 million. The mesh shape uses Polygon #40 generated using the LiDAR data set. The mesh has 5 layer materials plus ice wedge material. The mesh directory includes a single material version of the mesh. Exodus side sets are defined for bottom, top, and sides of the mesh.
Dimension and Size

3D Stacked Mesh
Target under 1 million cells.
Polygon and Top Surface

Polygon # 40
Triangulation Edge Lengths near .3
Elevation for Polygon Surface from LIDAR Data (Quan's space)

Surfaces for Stacked Mesh

Start with the polygon surface and construct additional surfaces to represent layers in the stacked mesh. Surfaces represent top and bottom of each material and divisions within the materials.

Surface order	Surface Definition		Divisions
6	Starting surface (top)
5	minus .2	from 6	0
4	minus .3	from Layer 5	0
3	minus .1	from Layer 4	0
2	minus .05	from Layer 3	0
1	minus 3.8	from Top	10

Material Ice Wedge

Top of wedge starts under Layer 2
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).
1 = bottom
2 = top
3 = east facing
4 = north facing
5 = south facing

Output Mesh Description

Output is a stacked prism mesh written as two Exodus files; a single material mesh and a multi-material Mesh with 6 materials (5 layers plus the Ice Wedge).

number of dimension:               3
number of nodes:               51344
number of elements:            94080

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

Mesh Extents (Meters):
        MIN               MAX      DIFFERENCE   
 x   46.34709930    71.83999634   25.49289703
 y   106.2200012    132.6065216   26.38652039
 z   .0054300118    4.992260933   4.937960815

...........................................................                     
  SUMMARY VOLUME/AREA of ELEMENTS 
...........................................................                     
Material  Num. Elements     Volume          Fractional Volume                    
 1         60864          0.1308482E+04     0.740990154                        
 2          6272          0.1984116E+02     0.011235998                        
 3          6272          0.3968212E+02     0.022471889                        
 4          6272          0.1190466E+03     0.067415773                        
 5          6272          0.7936425E+02     0.044943777                        
30          8128          0.1994401E+03     0.112942409                        

Total Mesh elements:  94080  Total Mesh Volume:  0.1765856E+04

* Materials and Cell Layers *

ID	Name	Cell Thick	Num Cells	Mat Thick
5	moss active layer 4	.2	1	0.20
4	upper organic layer 3	.3	1	0.30
3	lower organic layer 2	.1	1	0.10
2	layer 1 (organic or mineral)	.05	1	0.05
1	frozen mineral soil	.34545	2 - 11	0.69 - 3.799
30	ice	.34545	0 - 9	0.00 - 3.730

* Boundary Side Sets *
Top and Bottom: neon-pink top (num_side_ss2) has 6272 faces neon-green bottom (num_side_ss1) has 6272 faces	Sides: yellow north back (num_side_ss4) has 480 faces green west left (num_side_ss5) has 240 faces blue south front (num_side_ss6) has 480 faces

* Boundary Side Sets *

Top and Bottom:
neon-pink  top     (num_side_ss2) has  6272 faces
neon-green bottom  (num_side_ss1) has  6272 faces

Sides:
yellow  north back   (num_side_ss4) has  480 faces
green   west left    (num_side_ss5) has  240 faces
blue    south front  (num_side_ss6) has  480 faces

Output Mesh Files for Version 01(b)

These files were on re-run on May 7 (version b of V01) for sorted element order (only matters in the exo file).

LaGriT faceset files created from LaGriT mesh surface.

   -rw-r--r-- 1 tam sft      75367 May  7 08:34 fs_1_bot.faceset
   -rw-r--r-- 1 tam sft      75367 May  7 08:34 fs_2_top.faceset
   -rw-r--r-- 1 tam sft      12583 May  7 08:34 fs_3_rig.faceset
   -rw-r--r-- 1 tam sft       6343 May  7 08:34 fs_4_bac.faceset
   -rw-r--r-- 1 tam sft       3223 May  7 08:34 fs_5_lef.faceset

Mesh and faceset files for 6 Materials:
   -rw-r--r-- 1 tam sft   15663881 May  7 08:35 mesh_fsets.inp
   -rw-r--r-- 1 tam sft    9766208 May  7 08:35 mesh_fsets.gmv
   -rw-r--r-- 1 tam sft    4364616 May  7 08:34 mesh_fsets.exo
   -rw-r--r-- 1 tam sft    7313466 May  7 10:06 mesh_fsets_ascii.exo

Mesh and faceset files for 1 Material:
   -rw-r--r-- 1 tam sft   15612537 May  7 08:35 mesh_fsets_1mat.inp
   -rw-r--r-- 1 tam sft    7242792 May  7 08:35 mesh_fsets_1mat.gmv
   -rw-r--r-- 1 tam sft    4362972 May  7 08:35 mesh_fsets_1mat.exo
   -rw-r--r-- 1 tam sft    7311875 May  7 10:06 mesh_fsets_1mat_ascii.exo

LaGriT output file contains information reported during the run.
   -rw-r--r-- 1 tam sft      13446 May  7 08:35 logx3dgen
   -rw-r--r-- 1 tam sft      77436 May  7 08:35 outx3dgen
   -rw-r--r-- 1 tam sft      13446 May  7 10:07 write_exo.log
   -rw-r--r-- 1 tam sft      77436 May  7 10:07 write_exo.out

Project Archive Location

Full Set of files (v01b replaces v01):

v01b: /scratch/sft/tam/grid_gen/arctic/3D_poly40_v01b/ 

tar file sent:
/scratch/sft/tam/grid_gen/arctic/tar_files
-rw-r--r-- 1 tam sft 33243615 May  8 10:21 mesh_3D_poly40_v01b.tgz

 -rw-r--r-- 1 tam sft    75367 May  7 08:34 fs_1_bot.faceset
 -rw-r--r-- 1 tam sft    75367 May  7 08:34 fs_2_top.faceset
 -rw-r--r-- 1 tam sft    12583 May  7 08:34 fs_3_rig.faceset
 -rw-r--r-- 1 tam sft     6343 May  7 08:34 fs_4_bac.faceset
 -rw-r--r-- 1 tam sft     3223 May  7 08:34 fs_5_lef.faceset
 -rw-r--r-- 1 tam sft     6343 May  7 08:34 fs_6_fro.faceset
 -rw-r--r-- 1 tam sft      716 May  7 10:01 gmvrc
 -rw-r--r-- 1 tam sft    13446 May  7 08:35 logx3dgen
 -rw-r--r-- 1 tam sft  7311875 May  7 10:06 mesh_fsets_1mat_ascii.exo
 -rw-r--r-- 1 tam sft  4362972 May  7 08:35 mesh_fsets_1mat.exo
 -rw-r--r-- 1 tam sft  7242792 May  7 08:35 mesh_fsets_1mat.gmv
 -rw-r--r-- 1 tam sft 15612537 May  7 08:35 mesh_fsets_1mat.inp
 -rw-r--r-- 1 tam sft  7313466 May  7 10:06 mesh_fsets_ascii.exo
 -rw-r--r-- 1 tam sft  4364616 May  7 08:34 mesh_fsets.exo
 -rw-r--r-- 1 tam sft  9766208 May  7 08:35 mesh_fsets.gmv
 -rw-r--r-- 1 tam sft 15663881 May  7 08:35 mesh_fsets.inp
 -rw-r--r-- 1 tam sft      713 May  8 10:01 output_faceset.mlgi
 -rw-r--r-- 1 tam sft 11271536 May  7 08:34 out_tmp_sort1.gmv
 -rw-r--r-- 1 tam sft    77436 May  7 08:35 outx3dgen
 -rw-r--r-- 1 tam sft  9766208 Apr 30 15:26 proto_full_poly.gmv
 -rw-r--r-- 1 tam sft 20472393 Apr 30 15:26 proto_full_poly.inp
 -rw-r--r-- 1 tam sft  4620300 May  7 08:34 surf_sides.gmv
 -rw-r--r-- 1 tam sft     4370 May  8 10:00 write_exo.lgi
 -rw-r--r-- 1 tam sft    13446 May  7 10:07 write_exo.log
 -rw-r--r-- 1 tam sft    77436 May  7 10:07 write_exo.out


v01: /scratch/sft/tam/grid_gen/arctic/3D_poly40_v01/

tar file sent:
/scratch/sft/tam/grid_gen/arctic/tar_files
-rw-r--r-- 1 tam sft 31088146 May  8 10:12 mesh_3D_poly40_v01a.tgz

 -rw-r----- 1 tam sftus    69095 May  1 14:47 fs_1_bot.faceset
 -rw-r----- 1 tam sftus    75367 May  1 14:47 fs_2_top.faceset
 -rw-r----- 1 tam sftus    12583 May  1 14:47 fs_3_rig.faceset
 -rw-r----- 1 tam sftus     6343 May  1 14:47 fs_4_bac.faceset
 -rw-r----- 1 tam sftus     3223 May  1 14:47 fs_5_lef.faceset
 -rw-r----- 1 tam sftus     6343 May  1 14:47 fs_6_fro.faceset
 -rw-r----- 1 tam sftus      716 May  1 11:06 gmvrc
 -rw-r----- 1 tam sftus    14175 Apr 30 15:29 id_6_face_sets_general.log
 -rw-r----- 1 tam sftus    45636 Apr 30 15:29 id_6_face_sets_general.out
 -rw-r----- 1 tam sftus    12474 May  1 14:47 logx3dgen
 -rw-r----- 1 tam sftus  7304708 May  1 15:09 mesh_fsets_1mat_ascii.exo
 -rw-r----- 1 tam sftus  4362972 May  1 14:47 mesh_fsets_1mat.exo
 -rw-r----- 1 tam sftus  7242792 May  1 14:47 mesh_fsets_1mat.gmv
 -rw-r----- 1 tam sftus 15612537 May  1 14:47 mesh_fsets_1mat.inp
 -rw-r----- 1 tam sftus  7306299 May  1 15:09 mesh_fsets_ascii.exo
 -rw-r----- 1 tam sftus  4364616 May  1 14:47 mesh_fsets.exo
 -rw-r----- 1 tam sftus  9766208 May  1 14:47 mesh_fsets.gmv
 -rw-r----- 1 tam sftus 15663881 May  1 14:47 mesh_fsets.inp
 -rw-r----- 1 tam sftus      693 May  1 14:26 output_faceset_anorm.mlgi
 -rw-r----- 1 tam sftus      713 May  1 14:39 output_faceset.mlgi
 -rw-r----- 1 tam sftus    73949 May  1 14:47 outx3dgen
 -rw-r----- 1 tam sftus  9766208 Apr 30 15:26 proto_full_poly.gmv
 -rw-r----- 1 tam sftus 20472393 Apr 30 15:26 proto_full_poly.inp
 -rw-r----- 1 tam sftus  4620300 May  1 14:47 surf_sides.gmv
 -rw-r----- 1 tam sftus     3261 May  1 14:47 write_exo.lgi
 -rw-r----- 1 tam sftus    12474 May  1 15:09 write_exo.log 
 -rw-r----- 1 tam sftus    73949 May  1 15:09 write_exo.out

Data files:

/home/lucia/sandbox/barrow_site3/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 Full Method:

v01: /home/lucia/sandbox/barrow_site3/

Images and Project Details

Grid Statistics
Grid Methods
Gallery of All Project Images
Description of Selected Images

Grid Team Contacts

Carl Gable	<gable -at- lanl -dot- gov>	505-665-3533
Terry Miller	<tamiller -at- lanl -dot- gov>	505-667-8009
Lucia Short	<lucia -at- lanl -dot- gov>	505-665-7957