Command manual

Command list

SPH_FLUID

SPH
*SPH_FLUID
entype, enid, form, $v_{max}$, gid${}_{\mathrm{del}}$, $\Delta t_c$
pid${}_{\mathrm{1}}$, gid${}_{\mathrm{1}}$, $dx_1$, $dy_1$, $dz_1$, $\alpha_1$, $\beta_1$
.
pid${}_n$, gid${}_n$, $dx_n$, $dy_n$, $dz_n$, $\alpha_n$, $\beta_n$

Parameter definition

VariableDescription
entype Structure entity type for SPH-structure interaction
options: P, PS
enid Structure entity ID
form Formulation type
options:
1 $\rightarrow$ fluid (default)
2 $\rightarrow$ gas and fluid
3 $\rightarrow$ Godunov (no artificial viscosity)
4 $\rightarrow$ renormalized
101 $\rightarrow$ symplectic fluid
$v_{max}$ Maximum SPH node velocity
gid${}_{\mathrm{del}}$ Geometry defining a bounding box for SPH node deletion
$\Delta t_c$ SPH contact time step size
pid${}_{\mathrm{1}}$ Part ID
gid${}_{\mathrm{1}}$ Geometry ID that defines a region in space that will be filled with SPH nodes
$dx_1$ Node spacing in x-direction
$dy_1$ Node spacing in y-direction
default: dy${}_{\mathrm{1}}$ = dx${}_{\mathrm{1}}$
$dz_1$ Node spacing in z-direction
default: dz${}_{\mathrm{1}}$ = dx${}_{\mathrm{1}}$
$\alpha_1$ Linear artificial viscosity term
default: 0.1
$\beta_1$ Quadratic artificial viscosity term
default: 0.5
pid${}_n$ Part ID
gid${}_n$ Geometry ID that defines a region is space that will be filled with SPH nodes
$dx_n$ Node spacing in x-direction
$dy_n$ Node spacing in y-direction
default: dy${}_{\mathrm{n}}$ = dx${}_{\mathrm{n}}$
$dz_n$ Node spacing in z-direction
default: dz${}_{\mathrm{n}}$ = dx${}_{\mathrm{n}}$
$\alpha_n$ Linear artificial viscosity term
default: 0.1
$\beta_n$ Quadratic artificial viscosity term
default: 0.5

Description

Defines SPH fluid geometries/grids and interaction between SPH nodes and structure.