8.3
general documentation
Data Fields
cs_lagr_time_scheme_t Struct Reference

#include <cs_lagr.h>

+ Collaboration diagram for cs_lagr_time_scheme_t:

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
 

Detailed Description

Time and coupling scheme for the Lagrangian module

Field Documentation

◆ added_mass_const

cs_real_t added_mass_const

Added-mass constant ( $ C_A = 1$)

◆ extended_t_scheme

int extended_t_scheme

Extended exponential scheme taking into account the gradient of T_lag (0 off, 1 on)

◆ iadded_mass

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

\[ \widetilde{\tau_p} = (1 + C_A /2 \dfrac{\rho_f}{\rho_p}) \tau_p \]

◆ iilagr

int iilagr

Lagrangian module status.

  • CS_LAGR_OFF: Lagrangian module off
  • CS_LAGR_ONEWAY_COUPLING: Lagrangian two-phase flow in one-way coupling (no influence of the particles on the continuous phase)
  • CS_LAGR_TWOWAY_COUPLING: Lagrangian two-phase flow with two-way coupling (influence of the particles on the dynamics of the continuous phase). Dynamics, temperature and mass may be coupled independently.
  • CS_LAGR_FROZEN_CONTINUOUS_PHASE: Lagrangian two-phase flow on frozen i continuous phase. This option may only be used in the case of a calculation restart. All the Eulerian fields are frozen (including the scalar fields). This option automatically implies iccvfg = 1

◆ ilapoi

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

◆ interpol_field

int interpol_field

activation (=1) or not (=0) of P1 interpolation of mean carrier velocity at the location of the particles

◆ isttio

int isttio

◆ isuila

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

◆ t_order

int t_order

trajectory algorithm order in time

The documentation for this struct was generated from the following file: