/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 | |||||||||
γ | P0 | Psh | A | b |
Definition
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) |
|
γ | Heat capacity ratio
γ=CpCv
. (Real) |
|
P0 | Initial pressure. (Real) |
[Pa] |
Psh | Pressure shift. (Real) |
[Pa] |
A | EOS parameter. (Real) |
[Pa] |
b | EOS parameter. (Real) |
▸Example (Gas)
Comments
- The
Landau-Stanyukovich-Zeldovich-Kompaneets EOS 1 for detonation products is:
(1) P(ρ,e)=(γ−1)ρe+aρbWhere,- ρ
- Density
- e
- Internal energy density by mass
- b
- Material parameters
(2) μ=ρρ0−1=V0V−1This leads to:(3) P(μ,E)=(γ−1)(1+μ)E+A(1+μ)bWhich is the form used by Radioss where,(4) A=aρ0bWhere,- 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)