Grid Project:  ASCEM Savannah River Tank II

Version History

Mesh Overview

This project is for ASCEM Savannah River Tank II Modeling.
There are 2 meshes. The geometry mesh represents the material interfaces of the input tank data from Greg. The computational mesh has refinement between interfaces and added resolution along the Fast Flow path inlets and outlets. Grid optimization techniques such as smoothing are used to improve mesh performance.

Tank geometry is defined as 13 layers horizontal and 8 radial. The 14 tank materials are defined by selection of these layer and radial intersections.

Mesh Files are available on local servers or you can download the compressed ".tar.gz" archive. See mesh details and locations below.

V1.3 Recolor Half Prism and Hex Slice

V1 Hex Slice and 2D Quad from Prism Mesh

V1.2 3D Prism Mesh (Half Size) Images

V1.1 3D Prism Mesh (Quarter Size) Images

V1.0 Prototype Octree (Quarter Size) Images

V0 Prototype (Quarter Size) Geometry Images

All Project Images

Local: /scratch/nts/tam/ascem/tank_2014 

The following definitions apply to all the meshes:

The Mesh is built in cm Coordinates and converted to meters. 
3D Mesh has prism elements, slice has hex elements, 2D has quad elements.
 
Mesh has cylinder spacing with center at 0,0
Top boundary is 1992.5 cm (19.925 meters)
Bottom boundary is -1000 cm (10 meters)
Outside side boundary is 2375 cm (23.75 meters)

V1.2 Mesh Materials (Exodus Blocks):
1 -  soil                (green)
2 -  floor               (light gray)
3 -  roof                (light gray)
4 -  wall                (light gray)
5 -  tank grout          (light purple)
6 -  annulus grout       (purple)
7 -  primary liner       (dark gray)
8 -  secondary liner     (dark gray)
9 -  primary sand pad    (gold)
10 - secondary sand pad  (light gold)
11 - tank waste layer    (red)
12 - annulus waste layer (magenta)
13 - fast flow paths     (turqoise)
14 - primary liner, permeable (brown)

V1.3 Changes the following colors:
13 - fast flow concrete (turqoise)
14 - primary liner, permeable (brown)
15 - fast flow annulus (dark blue)
16 - fast flow primary liner (bright green)


Boundary Facesets (Exodus Side Sets) for all grids:
1 - Bottom
2 - Top
3 - Side Right
4 - Side Back
5 - Side Left
6 - Side Front
Note: 2D side sets are 1) Top 2) Bottom 3) Right 4) Left

Mesh information can be found in mesh directory in README.txt, RUNS, *.txt
README.txt is a general overview of the mesh version (cm).
mesh_stats.txt includes stats such as mesh info and material volumes
mesh_meter_stats.txt are the same stats after conversion to meters.

Mesh Files are written in formats: 
  Linux Binary Exodus II (.exo)
  Linux Binary GMV (.gmv)
  ASCII AVS (.inp)

Project Archives

V1.3 Recolor from 14 to 16 Materials

V1.2 Materials 1 - 14	V1.3 Materials 1 - 16
Change Materials from: 13 - fast flow paths (turqoise) 14 - primary liner, permeable (brown)	To the following colors: 13 - fast flow concrete (turqoise) 14 - primary liner, permeable (brown) 15 - fast flow annulus (dark blue) 16 - fast flow primary liner (bright green)
Description of Recolor RegridTank.pdf Gallery of V1.3 Recolored Mesh Images

Date: May 21 2014
Local dir: /scratch/nts/tam/ascem/tank_2014/3D_stack_V1.3_slice

Front Face of Half Size (1 cell wide)
Same mesh as V1.2.1 except materials change from 14 to 16 total.
number of elements =    7426
number of nodes =      15264

V1.3.1 Hex Slice README txt file

Download Archive (meters):  Stank_v1.3.1_slice_m.tar.gz (529K) 

Downlad Archive (cm):  Stank_v1.3.1_slice_cm.tar.gz (512K) 

Date: May 21 2014
Local dir: /scratch/nts/tam/ascem/tank_2014/3D_stack_V1.3_half

Same mesh as V1.2 except materials change from 14 to 16 total.
number of elements =   1851847
number of nodes =       950640 

V1.3 Prism Half Mesh README txt file

Downlad Archive (meters):  Stank_prism_v1.3_half_m.tar.gz (43M) 

Downlad Archive (cm):  Stank_prism_v1.3_half_cm.tar.gz (46M) 

V1.2.2 2D Quad from Slice Mesh

number of elements = 7426 number of nodes = 7632 2D Front Face of Hex Slice V1 Tank with 14 materials Resolution 1.75 and 2.5 cm along flow path and waste layers. V1.2.2 2D Quad Images V1.2.2 2D Quad README txt file

V1.2.1 3D Hex Slice from Prism Mesh

number of elements = 7426 number of nodes = 15264 number of elements each layer = 318 Front Face of Half Size 10 cm wide (1 cell) V1 Tank with 14 materials Resolution 1.75 and 2.5 cm along flow path and waste layers. V1.2.1 Hex Slice Images V1.2.1 Hex Slice README txt file

V1.2 3D Prism Mesh Half Size

number of elements = 1851847 number of nodes = 950640 number of elements each layer = 39401 Half size (180 degrees) Tank embedded in box. Combination of Radial and Layer interfaces define 14 materials Resolution 1.75 and 2.5 cm along flow path and waste layers. V1.2 Half Mesh Images V1.2 Half Mesh README txt file

V1.1 3D Prism Mesh Quarter Size

number of elements = 925007 number of nodes = 476736 number of elements each layer = 19681 Quarter size (90 degrees) Tank embedded in box. This mesh is the basis for half mesh, hex slice, quad 2D. Combination of Radial and Layer interfaces define 14 materials Resolution 1.75 and 2.5 cm along flow path and waste layers. V1.1 Quarter Mesh Images V1.1 Quarter Mesh README txt file

V1 Tank Prototype Octree (quarter size)

number of octree elements = 27125580 number of tet elements = 233000000 number of nodes = 32110546 Quarter size Refined elements defined by intersection of 14 materials. Cell size ranges from 1cm to 2**8 cm. A structured mesh with octree refinement was built based on the quarter mesh geometry. The runs took a couple of days. To get enough resolution to capture the thin cylindrical walls we need to refine at least 8 times. Note this fast prototype is missing some refinement under the wall and annulus. Though the cylinder wall has definition, the spacing is stair-stepped along the curve and thickness across the feature varies along this stair-step interface. For prototype of process only. No model files are available. V1 Prototype Octree Images V1 Prototype Octree Method README txt file

V0 Tank Prototype Geometry (quarter size)

This mesh and the images are good for viewing the geometry and design of each material.
This geometry definition is approved and used for the V1 computational meshes.

number of elements = 22711 number of nodes = 12768 Quarter size Spacing defined by material interfaces of 14 materials. This represents the Tank geometry and materials. Elements fill in and out of tank, otherwise no added resolution. For viewing only. Not for modeling. V0 Prototype Geometry Images

V1 Mesh Method

This is the stack method used to create all the V1 stacked meshes. The quarter size is repeated for half circle 180 degrees. The front face of half mesh is used to extract a 3D slice and a 2D slice.

LaGriT Command Files

LaGriT Workflow

Create the triangulated surface based on cylinder point distributions.
This will be the template for the stacked prism mesh.
      lagrit < tri_surf.lgi to create basic triangulation
      lagrit < smooth_recon.lgi to optimize to targe edge lengths
      lagrit < tri_color_regions.lgi to assign cylinder regions 

Stack surfaces into the 3D mesh
      lagrit < stack.lgi
      cp outx3dgen stack.out.txt

check connectivity in directory /connect
      lagrit < stor.lgi

color the prism mesh
      lagrit < stack_set_materials.lgi
      cp outx3dgen stack_set_materials.out.txt

Write exo files for the prism mesh
      lagrit < write_exo_fs.lgi
      cp outx3dgen write_exo_fs.out.txt

Write exo files in meters instead of cm
      lagrit < write_exo_fs_m.lgi
      cp outx3dgen write_exo_fs_m.out.txt

	Triangulated surface for horizontal spacing. # Define horizontal material boundaries (radial width meters) grout 12.250 primary liner .025 annulus .725 fast-flow path 1 .025 secondary liner .025 fast-flow path 2 .025 wall .675 soil 10.000
	Stacked surfaces for vertical spacing. # Define the layer constants (Z values in meters) define ZTOP 19.925 define Z12 9.925 define Z11 9.025 define Z10 9.000 define Z9 2.475 define Z8 2.450 define Z7 1.025 define Z6 1.000 define Z5 .975 define Z4 .950 define Z3 .925 define Z2 .900 define Z1 0.000 define Z0 -10.000

Grid Team Contacts