/EBCS/INLET

Block Format Keyword Define the inlet elementary boundary condition used with /MAT/LAW151.

Format

(1)	(2)	(4)	(5)	(7)	(8)
/EBCS/INLET/`form`/`ebcs_ID`/`unit_ID`
`ebcs_title`
`surf_ID`	`vel_flag`
`fct_ID`_vx	`Fscale`_vx	`fct_ID`_vy	`Fscale`_vy	`fct_ID`_vz	`Fscale`_vz
`fct_ID`_vf1	`Fscale`_vf1	`fct_ID`_rho1	`Fscale`_rho1	`fct_ID`_{p_e1}	`Fscale`_{p_e1}
etc	etc	etc	etc	etc	etc
`fct_ID`_vfN	`Fscale`_vfN	`fct_ID`_rhoN	`Fscale`_rhoN	`fct_ID`_{p_eN}	`Fscale`_{p_eN}

Definition

Field	Contents	SI Unit Example
`form`	Formulation of INLET boundary condition. VE Input density and energy using `fct_ID`_{p_e} and `Fscale`_{p_e} VP Input density and pressure using `fct_ID`_{p_e} and `Fscale`_{p_e}
`ebcs_ID`	Elementary boundary condition identifier. (Integer, maximum 10 digits)
`unit_ID`	Unit Identifier (Integer, maximum 10 digits)
`ebcs_title`	Elementary boundary condition title. (Character, maximum 100 characters)
`surf_ID`	Surface identifier. (Integer)
`vel_flag`	Velocity type of INLET boundary. =0 (Default) Input normal velocity in `fct_ID`_vx and `Fscale`_vx. =1 Input 3 components of the velocity. (Integer)
`fct_ID`_vx	If `vel_flag` =0, function $f_{V X} (t)$ identifier is the normal velocity. If `vel_flag` =1, function $f_{V X} (t)$ identifier for X velocity. =-1 Velocity is interpolated, based other defined inputs. =0 $V_{X} = F s c a l e_{V X}$ . = n $V_{X} = F s c a l e_{V X} \cdot f_{V X} (t)$ . (Integer)
`Fscale`_vx	If `vel_flag` =0, normal velocity scale factor If `vel_flag` =1, X velocity scale factor Default = 0.0 (Real)	$[\frac{m}{s}]$
`fct_ID`_vy	Function $f_{V Y} (t)$ identifier for Y velocity. =-1 Velocity is interpolated, based other defined inputs. =0 $V_{Y} = F s c a l e_{V Y}$ . = n $V_{Y} = F s c a l e_{V Y} \cdot f_{V Y} (t)$ . (Integer)
`Fscale`_vy	Y velocity scale factor. Default = 0 (Real)	$[\frac{m}{s}]$
`fct_ID`_vz	Function $f_{V Z} (t)$ identifier for Z velocity. =-1 Velocity is interpolated, based other defined inputs. =0 $V_{Z} = F s c a l e_{V Z}$ . = n $V_{Z} = F s c a l e_{V Z} \cdot f_{V Z} (t)$ . (Integer)
`Fscale`_vz	Z velocity scale factor. Default = 0 (Real)	$[\frac{m}{s}]$

Repeat the following lines for each /MAT/LAW151 submaterial 1 through N

Field	Contents	SI Unit Example
`fct_ID`_vf1	Function $f_{v f} (t)$ identifier for volume fraction. =-1 Volume fraction is interpolated, based other defined inputs. =0 $V o l u m e F r a c t i o n = F s c a l e_{v f}$ . = n $V o l u m e f r a c t i o n = F s c a l e_{v f} \cdot f_{v f} (t)$ . (Integer)
`Fscale`_vf1	Alpha scale factor. Default = 0 (Real)
`fct_ID`_rho1	Function $f_{r h o} (t)$ identifier for density. =-1 Density is interpolated, based other defined inputs. =0 $ρ = F s c a l e_{r h o}$ . = n $ρ = F s c a l e_{r h o} \cdot f_{r h o} (t)$ . (Integer)
`Fscale`_rho1	Density scale factor. Default = 0 (Real)	$[\frac{kg}{m^{3}}]$
`fct_ID`_{p_e1}	If `form` =VE, function identifier for energy, $f_{p_e} (t)$ . If `form` =VP, function identifier for pressure $f_{p_e} (t)$ . =-1 P or E is interpolated, based other defined inputs. =0 $P or E = F s c a l e_{p_e}$ . = n $P or E = F s c a l e_{p_e} \cdot f_{p_e} (t)$ . (Integer)
`Fscale`_{p_e1}	If `form` =VE, energy scale factor. If `form` =VP, pressure scale factor. Default = 0 (Real)	$[\frac{m}{s}]$

Comments

Input is general, no prior assumptions are enforced! You must verify that the elementary boundaries are consistent with general assumptions of ALE (equation closure).
Density, pressure, energy are imposed according to a scale factor and a time function. If the function number is 0, the scale factor input is used as a contstant imposed density, pressure or energy.
The INLET boundary condition is only compatible with /MAT/LAW151. Inlet functions for volume fraction, density and pressure (or energy depending on the formulation VP or VE) must be provided for every phase present in the /MAT/LAW151 card.
If the function ID that defines the volume fraction, velocity, density, pressure or energy is equal to -1, the corresponding physical quantity is interpolated from the inside of the domain (zeros normal derivative).