cs_scheme_geometry.h

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#ifndef __CS_CDO_SCHEME_GEOMETRY_H__
#define __CS_CDO_SCHEME_GEOMETRY_H__

/*============================================================================
 * Geometric computations for building discretization operators which is
 * shared by several files
 *============================================================================*/

/*
  This file is part of Code_Saturne, a general-purpose CFD tool.

  Copyright (C) 1998-2019 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 "cs_cdo_local.h"
#include "cs_math.h"

/*----------------------------------------------------------------------------*/

BEGIN_C_DECLS

/*============================================================================
 * Macro definitions
 *============================================================================*/

/*============================================================================
 * Type definitions
 *============================================================================*/

/*=============================================================================
 * Inline static function prototypes
 *============================================================================*/

/*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/

inline static void
cs_compute_grdfc(const short int     f_sgn,
                 const cs_quant_t    pfq,
                 const cs_nvec3_t    deq,
                 cs_real_t          *grd_c)
{
  const double  hfc = cs_math_3_dot_product(pfq.unitv, deq.unitv) * deq.meas;
  const cs_real_t  ohf = -f_sgn/hfc;

  for (int k = 0; k < 3; k++) grd_c[k] = ohf * pfq.unitv[k];
}

/*============================================================================
 * Public function prototypes
 *============================================================================*/

/*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/

void
cs_compute_face_covariance_tensor(const cs_cell_mesh_t   *cm,
                                  short int               f,
                                  const cs_nvec3_t        ax,
                                  const cs_nvec3_t        ay,
                                  const cs_real_t         center[3],
                                  cs_real_t               cov[3]);

/*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/

void
cs_compute_inertia_tensor(const cs_cell_mesh_t   *cm,
                          const cs_real_t         center[3],
                          cs_real_t               inertia[3][3]);

/*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/

void
cs_compute_grd_ve(const short int      v1,
                  const short int      v2,
                  const cs_nvec3_t     deq,
                  const cs_real_3_t    uvc[],
                  const cs_real_t      lvc[],
                  cs_real_t           *grd_v1,
                  cs_real_t           *grd_v2);

/*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/

double
cs_compute_fwbs_q1(short int                 f,
                   const cs_cell_mesh_t     *cm,
                   cs_real_t                *wvf,
                   cs_real_t                *pefc_vol);

/*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/

void
cs_compute_fwbs_q2(short int                 f,
                   const cs_cell_mesh_t     *cm,
                   cs_real_3_t               grd_c,
                   cs_real_t                *wvf,
                   cs_real_t                *pefc_vol);

/*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/

double
cs_compute_fwbs_q3(short int                 f,
                   const cs_cell_mesh_t     *cm,
                   cs_real_3_t               grd_c,
                   cs_real_t                *wvf,
                   cs_real_t                *pefc_vol);

/*----------------------------------------------------------------------------*/

END_C_DECLS

#endif /* __CS_CDO_SCHEME_GEOMETRY_H__ */