# /EULER/MAT

Block Format Keyword Compute material flow with EULER framework.

## Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/EULER/MAT/mat_ID

## Definitions

Field Contents SI Unit Example
mat_ID Material identifier.

(Integer, maximum 10 digits)

## Example (Air)

#RADIOSS STARTER
/UNIT/1
unit for mat
kg                   m                   s
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/MAT/HYDRO/4/1
AIR
#              RHO_I               RHO_0
1.22                   0
#                Knu                Pmin
1.5E-5                   0
/EOS/POLYNOMIAL/4/1
AIR
#                 C0                  C1                  C2                  C3
0                   0                   0                   0
#                 C4                  C5                  E0                Pmin               RHO_0
0.4                 0.4              253300                   0                1.22
/EULER/MAT/4
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
#enddata
/END
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|

2. With a collocated scheme (/MAT/LAW151 (MULTIFLUID)) there is by default a slipping wall boundary condition ( ${\upsilon }_{n}\cdot n={\upsilon }_{wall}\cdot n$ ).
3. With a staggered scheme (all material laws, except /MAT/LAW151) velocity must be fixed with /BCS option at boundary nodes. You can define either a solid wall boundary condition ( ${\upsilon }_{f}={\upsilon }_{wall}$ ) or a slipping wall boundary condition ( ${\upsilon }_{f}\cdot n={\upsilon }_{wall}\cdot n$ ).