#include <cs_lagr.h>
Data Fields | |
int | iilagr |
int | isttio |
int | isuila |
int | t_order |
int | extended_t_scheme |
int | interpol_field |
int | ilapoi |
int | iadded_mass |
cs_real_t | added_mass_const |
Time and coupling scheme for the Lagrangian module
cs_real_t added_mass_const |
Added-mass constant ( \( C_A = 1\))
int extended_t_scheme |
Extended exponential scheme taking into account the gradient of T_lag (0 off, 1 on)
int iadded_mass |
activation (=1) or not (=0) of the added-mass term.
\[ \DP{u_p} = - \dfrac{1}{\rho_p} \grad P + \dfrac{u_s-u_p}{\tau_p} + g +1/2 C_A \dfrac{\rho_f}{\rho_p} \left( \dfrac{Du}{Dt}-\DP{u_p} \right) \]
and
\[ \rho_f \dfrac{Du}{Dt} \simeq - \grad P + \rho_f g \]
with \( C_A = 1\). Then
\[ \DP{u_p} = - \dfrac{1}{\rho_p} \dfrac{1+C_A/2} {1+C_A/2\dfrac{\rho_f}{\rho_p}} \grad P + \dfrac{u_s-u_p}{\widetilde{\tau}_p} + g \]
with
\[ \widetilde{\tau_p} = (1 + C_A /2 \dfrac{\rho_f}{\rho_p}) \tau_p \]
int iilagr |
Lagrangian module status.
int ilapoi |
activation (=1) or not (=0) of the solution of a Poisson's equation for the correction of the particle instantaneous velocities (in order to obtain a null divergence). this option is not validated and reserved to the development team. Do not change the default value
int interpol_field |
activation (=1) or not (=0) of P1 interpolation of mean carrier velocity at the location of the particles
int isttio |
int isuila |
activation (=1) or not (=0) of a Lagrangian calculation restart. The calculation restart file read when this option is activated only contains the data related to the particles; the global calculation must also be a restart calculation
int t_order |
trajectory algorithm order in time