Grid Project:   GOLEVKA

Grid Team Member: Carl Gable
Grid Versions: 6 meter resolution
Data Source: Ali Safaeinili, JPL, NASA
Delivered To: Ali Safaeinili, JPL, NASA
Date Completed: April 1 2004



Purpose of Project

Efficient modeling of radar echoes reflected from an asteroid or comet. Volume mesh, 6 meter resolution, representing Golevka asteroid. Smooth exterior surface so that low resolution facets on outside surface are not maintained.





Golevka
Golevka mesh
m06_exterior_cut_01


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Grid Statistics

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Design Criteria

Project Summary

Dimension:

Min
 Max
 Diff
X
 -2.72718E-01
 2.14441E-01
 4.87159E-01
Y
 -3.08998E-01
 3.74943E-01
 6.83942E-01
Z
 -2.73664E-01
 2.96281E-01
 5.69945E-01

Grid Element Type: Tetrahedra
Grid Software Used: LaGriT 

elements with aspect ratio < .01:                  107                          
elements with aspect ratio b/w .01 and .02:         25                          
elements with aspect ratio b/w .02 and .05:         12                          
elements with aspect ratio b/w .05 and .1 :          3                          
elements with aspect ratio b/w .1  and .2 :          1                          
elements with aspect ratio b/w .2  and .5 :       4112                          
elements with aspect ratio b/w .5  and 1. :    4526664                          
min aspect ratio =  0.5440E-05  max aspect ratio =  0.9998E+00                  
 
epsilonvol:   4.2166045E-14                                                     
---------------------------------------                                         
element volumes b/w  0.1511E-10 and  0.1211E-09:        34                      
element volumes b/w  0.1211E-09 and  0.9704E-09:      1423                      
element volumes b/w  0.9704E-09 and  0.7776E-08:   1693462                      
element volumes b/w  0.7776E-08 and  0.6231E-07:   2826431                      
element volumes b/w  0.6231E-07 and  0.4993E-06:      9574                      

min volume =   1.5112207E-11  max volume =   4.9928810E-07                      
-----------------------------------------------------------                     
   4530924 total elements evaluated.

The Grid Method successfully follows the design criteria.

Project Archive Location


FEHMN files for enter grid name:

/grid_gen/golevka/safaeinili_ali/refine_surface_shoot_pts_06m

Data files:

/grid_gen/golevka/safaeinili_ali/golevka_edit2.inp

Work Directory:

/grid_gen/golevka/safaeinili_ali/refine_surface_shoot_pts_06m
 

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Grid Statistics

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Grid Team Contacts

Carl Gable gable -at- lanl -dot- gov 505-665-3533
Terry Miller tamiller -at- lanl -dot- gov 505-667-8009