.. _rzamr :

**_RZAMR_**

> **RZAMR **uses an octree type refinement applied to an existing hexahedral
mesh to all nodes in a specified region.&nbsp_place_holder; No additional
elements are kept,&nbsp_place_holder; the intention is that the resulting node
distribution will be passed to** **connect to generate a tetrahedra mesh.

>

> FORMAT:

>

>> **rzamr**/region_name/number_of_levels

*&nbsp_place_holder; region_name&nbsp_place_holder;&nbsp_place_holder;&nbsp_place_holder; name of region to refine.&nbsp_place_holder; If blank,&nbsp_place_holder; all regions will be refined.&nbsp_place_holder; An element will be refined if any node of the element is in the specified region.   
*&nbsp_place_holder; number_of_levels&nbsp_place_holder;&nbsp_place_holder;&nbsp_place_holder; is the number of times the refinement will be performed.&nbsp_place_holder; After each level, the code will determine which of the new nodes are in the specified region and will refine the associated elements.&nbsp_place_holder; Default is 1.   
&nbsp_place_holder;

>

> EXAMPLES:

>

>> **rzamr**&nbsp_place_holder;&nbsp_place_holder;&nbsp_place_holder; refine
the entire mesh

**rzamr** /r1/3&nbsp_place_holder;&nbsp_place_holder;&nbsp_place_holder; refine elements with nodes in the region r1 three times
>>

>> examples of use of **rzamr**:

>>

>> *create the hex mesh

cmo/create/cmo///hex

* define geometry   
surface/inside/reflect/box/0,0,0/1,1,1

surface/diag/intrface/plane/0,0,0/1,0,1/1,1,1

region/lin/ le inside and ge diag /

region/rin/ le inside and lt diag /

mregion/mlin/ le inside and gt diag /

mregion/mrin/ le inside and lt diag /

* distribute nodes   
quadxyz/2,2,2/0.,0.,0./1.,0.,0./1.,1.,0./0.,1.,0./ &

0.,0.,1./1.,0.,1./1.,1.,1./0.,1.,1./

* set node types and materials   
setpts

* connect up the hex mesh   
rzbrick/xyz/2,2,2/1,0,0/connect

* refine the hex mesh   
rzamr/lin/1

rzamr/rin/3

* create the tet mesh   
cmo/create/cmot///tet

* define geometry again for tet mesh   
surface/inside/reflect/box/0,0,0/1,1,1

surface/diag/intrface/plane/0,0,0/1,0,1/1,1,1

region/lin/ le inside and ge diag /

region/rin/ le inside and lt diag /

mregion/mlin/ le inside and gt diag /

mregion/mrin/ le inside and lt diag /

* copy in the nodes from the hex mesh to the tet mesh   
copypts/cmot/cmo

cmo/select/cmot

cmo/release/cmo

* reset node types and materials so that setpts will use   
* geometry to figure out the correct values   
cmo/setatt/cmot/itp/1,0,0/0

cmo/setatt/cmot/imt/1,0,0/0

* set node types and materials   
setpts

* connect up the tet mesh   
connect

* set element materials   
* and create parent/child nodes on interfaces   
settets

dump/gmv/gmvtet

finish

&nbsp_place_holder;

&nbsp_place_holder;