cs_ale.h

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#ifndef __CS_ALE_H__
#define __CS_ALE_H__
 
/*============================================================================
 * Functions associated to ALE formulation
 *============================================================================*/
 
/*
  This file is part of code_saturne, a general-purpose CFD tool.
 
  Copyright (C) 1998-2025 EDF S.A.
 
  This program is free software; you can redistribute it and/or modify it under
  the terms of the GNU General Public License as published by the Free Software
  Foundation; either version 2 of the License, or (at your option) any later
  version.
 
  This program is distributed in the hope that it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  details.
 
  You should have received a copy of the GNU General Public License along with
  this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
  Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
 
/*----------------------------------------------------------------------------*/
 
/*----------------------------------------------------------------------------
 * Standard C library headers
 *----------------------------------------------------------------------------*/
 
/*----------------------------------------------------------------------------
 * Local headers
 *----------------------------------------------------------------------------*/
 
#include "base/cs_array.h"
#include "base/cs_base.h"
#include "cdo/cs_domain.h"
#include "base/cs_restart.h"
 
/*----------------------------------------------------------------------------*/
 
BEGIN_C_DECLS
 
/*============================================================================
 * Type definitions
 *============================================================================*/
 
/*----------------------------------------------------------------------------
 * ALE type
 *----------------------------------------------------------------------------*/
 
typedef enum {
 
  CS_ALE_NONE = 0,    
  CS_ALE_LEGACY = 1,  
  CS_ALE_CDO = 2      
} cs_ale_type_t;
 
typedef struct {
 
  int        *impale;                    
  int        *bc_type;                   
  int         ale_iteration;             
  int         implicit_coupling_ite; 
  cs_real_t  *i_mass_flux_ale;           
  cs_real_t  *b_mass_flux_ale;           
  /* For neptune ALE implicit coupling */
  cs_real_33_t  **gradu_pre;        
  cs_real_3_t    *gradp_pre;        
  cs_real_3_t   **gradvolf_pre;     
  cs_real_3_t   **gradhtot_pre;     
  cs_real_63_t  **gradrij_pre;      
  cs_real_t     **i_mass_flux_pre;  
  cs_real_t     **b_mass_flux_pre;  
  cs_real_t     **alprof_pre;       
  cs_real_t     **alprob_pre;       
  cs_real_t     **gamma_pre;        
} cs_ale_data_t;
 
/*=============================================================================
 * Global variables
 *============================================================================*/
 
extern cs_ale_type_t  cs_glob_ale;
 
extern cs_ale_data_t  *cs_glob_ale_data;
 
extern int cs_glob_ale_n_ini_f;  /* Number of sub-iterations for fluid
                                    flow initialization */
 
extern int cs_glob_ale_need_init;  /* Indicate whether an iteration to
                                      initialize ALE is required */
 
/*============================================================================
 * Public function prototypes
 *============================================================================*/
 
/*----------------------------------------------------------------------------*/
/*
 * \brief Compute of ALE volumic flux from displacement and deduced volume
 *        at time n+1.
 *
 * \param[in, out] domain  pointer to a cs_domain_t structure
 */
/*----------------------------------------------------------------------------*/
 
void
cs_ale_compute_volume_from_displacement(cs_domain_t *domain);
 
/*----------------------------------------------------------------------------*/
/*
 * \brief In the ALE framework, update mass flux by adding mesh velocity.
 *
 * \param[in]      m       pointer to associated mesh structure
 * \param[in]      mq      pointer to associated mesh quantities structure
 * \param[in]      dt      time step at cells
 * \param[in]      crom    density at cells
 * \param[in]      brom    density at boundary faces
 * \param[in, out] imasfl  interior face mass flux
 * \param[in, out] bmasfl  boundary face mass flux
 */
/*----------------------------------------------------------------------------*/
 
void
cs_mesh_velocity_mass_flux(const cs_mesh_t             *m,
                           const cs_mesh_quantities_t  *mq,
                           const cs_real_t              dt[],
                           const cs_real_t              crom[],
                           const cs_real_t              brom[],
                           cs_real_t                    imasfl[],
                           cs_real_t                    bmasfl[]);
 
/*----------------------------------------------------------------------------*/
/*
 * Compute boundary condition code for ALE
 *----------------------------------------------------------------------------*/
 
void
cs_boundary_condition_ale_type(const cs_mesh_t            *m,
                               const cs_mesh_quantities_t *mq,
                               const bool                  init,
                               const cs_real_t             dt[],
                               const int                   bc_type[],
                               cs_real_t                  *rcodcl1_vel);
 
/*----------------------------------------------------------------------------*/
/*
 * Compute boundary condition code for ALE
 *----------------------------------------------------------------------------*/
 
void
cs_boundary_condition_ale_type_nep(const cs_mesh_t            *m,
                                   const cs_mesh_quantities_t *mq,
                                   const bool                  init,
                                   const cs_real_t             dt[],
                                   const int                   bc_type[],
                                   cs_real_t                  *rcodcl1_vel);
 
/*----------------------------------------------------------------------------*/
/*
 * \brief  Allocation of ialtyb and impale for the ALE structure.
 */
/*----------------------------------------------------------------------------*/
 
void cs_ale_allocate(void);
 
/*----------------------------------------------------------------------------*/
/*
 * \brief  Compute cell and face centers of gravity, cell volumes
 *         and update bad cells.
 *
 * \param[out]       min_vol        Minimum cell volume
 * \param[out]       max_vol        Maximum cell volume
 * \param[out]       tot_vol        Total cell volume
 */
/*----------------------------------------------------------------------------*/
 
void
cs_ale_update_mesh_quantities(cs_real_t  *min_vol,
                              cs_real_t  *max_vol,
                              cs_real_t  *tot_vol);
 
/*----------------------------------------------------------------------------*/
/*
 * \brief  Project the displacement on mesh vertices (solved on cell center).
 *
 * \param[in]       ale_bc_type   Type of boundary for ALE
 * \param[in]       meshv         Mesh velocity
 * \param[in]       gradm         Mesh velocity gradient
 *                                (du_i/dx_j : gradv[][i][j])
 * \param[in]       claale        Boundary conditions A
 * \param[in]       clbale        Boundary conditions B
 * \param[in]       dt            Time step
 * \param[out]      disp_proj     Displacement projected on vertices
 */
/*----------------------------------------------------------------------------*/
 
void
cs_ale_project_displacement(const int           ale_bc_type[],
                            const cs_real_3_t  *meshv,
                            const cs_real_33_t  gradm[],
                            const cs_real_3_t  *claale,
                            const cs_real_33_t *clbale,
                            const cs_real_t    *dt,
                            cs_real_3_t        *disp_proj);
 
/*----------------------------------------------------------------------------*/
/*
 * \brief  Update mesh in the ALE framework.
 *
 * \param[in]       itrale        number of the current ALE iteration
 */
/*----------------------------------------------------------------------------*/
 
void
cs_ale_update_mesh(int  itrale);
 
/*----------------------------------------------------------------------------*/
/*
 * \brief Update ALE BCs for required for the fluid
 *
 * \param[out]      ale_bc_type   type of ALE bcs
 * \param[out]      b_fluid_vel   Fluid velocity at boundary faces
 */
/*----------------------------------------------------------------------------*/
 
void
cs_ale_update_bcs(int         *ale_bc_type,
                  cs_real_3_t *b_fluid_vel);
 
/*----------------------------------------------------------------------------*/
/*
 * \brief Solve a Poisson equation on the mesh velocity in ALE framework.
 *
 * It also updates the mesh displacement
 * so that it can be used to update mass fluxes (due to mesh displacement).
 *
 * \param[in]  iterns  Navier-Stokes iteration number
 */
/*----------------------------------------------------------------------------*/
 
void
cs_ale_solve_mesh_velocity(const int        iterns,
                           const cs_real_t  b_rho[],
                           const cs_real_t  i_mass_flux[],
                           const cs_real_t  b_mass_flux[]);
 
/*----------------------------------------------------------------------------*/
/*
 * \brief  Activate the mesh velocity solving with CDO
 */
/*----------------------------------------------------------------------------*/
 
void
cs_ale_activate(void);
 
/*----------------------------------------------------------------------------*/
/*
 * \brief  Test if mesh velocity solving with CDO is activated
 *
 * \return true ifmesh velocity solving with CDO is requested, false otherwise
 */
/*----------------------------------------------------------------------------*/
 
bool
cs_ale_is_activated(void);
 
/*----------------------------------------------------------------------------*/
/*
 * \brief Add "property" fields dedicated to the ALE model.
 */
/*----------------------------------------------------------------------------*/
 
void
cs_ale_add_property_fields(void);
 
/*----------------------------------------------------------------------------*/
/*
 * \brief Initialize fields volume dedicated to the ALE model.
 */
/*----------------------------------------------------------------------------*/
 
void
cs_ale_initialize_volume_fields(void);
 
/*----------------------------------------------------------------------------*/
/*
 * \brief Setup the equations solving the mesh velocity when CDO is activated
 *
 * \param[in, out] domain  pointer to a cs_domain_t structure
 */
/*----------------------------------------------------------------------------*/
 
void
cs_ale_init_setup(cs_domain_t *domain);
 
/*----------------------------------------------------------------------------
 *
 * \brief Print the ALE options to setup.log.
 *
 *----------------------------------------------------------------------------*/
 
void
cs_ale_log_setup(void);
 
/*----------------------------------------------------------------------------*/
/*
 * \brief Setup the equations solving the mesh velocity
 *
 * \param[in]   domain       pointer to a cs_domain_t structure
 */
/*----------------------------------------------------------------------------*/
 
void
cs_ale_setup_boundaries(const cs_domain_t   *domain);
 
/*----------------------------------------------------------------------------*/
/*
 * \brief  Finalize the setup stage for the equation of the mesh velocity
 *
 * \param[in, out]  domain       pointer to a cs_domain_t structure
 */
/*----------------------------------------------------------------------------*/
 
void
cs_ale_finalize_setup(cs_domain_t   *domain);
 
/*----------------------------------------------------------------------------*/
/*
 * \brief  Free the main structure related to the ALE mesh velocity solving
 */
/*----------------------------------------------------------------------------*/
 
void
cs_ale_destroy_all(void);
 
/*----------------------------------------------------------------------------*/
/*
 * \brief Read ALE data from restart file.
 *
 * \param[in, out]  r  associated restart file pointer
 */
/*----------------------------------------------------------------------------*/
 
void
cs_ale_restart_read(cs_restart_t  *r);
 
/*----------------------------------------------------------------------------*/
/*
 * \brief Write ALE data from restart file.
 *
 * \param[in, out]  r  associated restart file pointer
 */
/*----------------------------------------------------------------------------*/
 
void
cs_ale_restart_write(cs_restart_t  *r);
 
/*----------------------------------------------------------------------------*/
 
END_C_DECLS
 
#endif /* __CS_ALE_H__ */