/EOS/LSZK
Block Format Keyword Describes the Landau-Stanyukovich-Zeldovich-Kompaneets EOS for detonation products.
Format
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
/EOS/LSZK/mat_ID/unit_ID | |||||||||
eos_title | |||||||||
P0 | Psh | A | b | ||||||
Definitions
Field | Contents | SI Unit Example |
---|---|---|
mat_ID | Material identifier. (Integer, maximum 10 digits) |
|
unit_ID | Unit Identifier. (Integer, maximum 10 digits) |
|
eos_title | EOS title. (Character, maximum 100 characters) |
|
Heat capacity ratio
. (Real) |
||
P0 | Initial pressure. (Real) |
|
Psh | Pressure shift. (Real) |
|
A | EOS parameter. (Real) |
|
b | EOS parameter. (Real) |
|
Reference density. Default = material density (Real) |
Example (Gas)
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/UNIT/1
unit for mat
g mm ms
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/MAT/HYDPLA/7/1
IDEAL-GAS
# RHO_I RHO_0
1.22e-3 1.22e-3
# E nu
0 0
# a b n eps_max sigma_max
1E30 0 0 0 0
# Pmin
0
/EOS/LSZK/7/1
det products
# GAMMA P0 PSH A B
2.71 1.00 0 10 2.5
# RHO0
1.22e-3
/ALE/MAT/7
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
#enddata
Comments
- The
Landau-Stanyukovich-Zeldovich-Kompaneets EOS 1 for detonation products is:
(1) Where,- Density
- e
- Internal energy density by mass
- b
- Material parameters
(2) This leads to:(3) Which is the form used by Radioss where,(4) Where,- E
- Internal energy by initial volume
- A and b
- Material parameters
- Equations of state are used by
Radioss to compute the hydrodynamic pressure and are
compatible with the material laws:
- /MAT/LAW3 (HYDPLA)
- /MAT/LAW4 (HYD_JCOOK)
- /MAT/LAW6 (HYDRO or HYD_VISC)
- /MAT/LAW10 (DPRAG1)
- /MAT/LAW12 (3D_COMP)
- /MAT/LAW49 (STEINB)
- /MAT/LAW102 (DPRAG2)
- /MAT/LAW103 (HENSEL-SPITTEL)