const.h 2.49 KB
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/*******************************************************************************
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 * This file is part of SWIFT.
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 * Copyright (c) 2012 Pedro Gonnet (ptcedro.gonnet@durham.ac.uk)
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 *                    Matthieu Schaller (matthieu.schaller@durham.ac.uk)
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 *
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 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
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 *
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 * 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.
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 *
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 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 *
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 ******************************************************************************/
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#ifndef SWIFT_CONST_H
#define SWIFT_CONST_H
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/* SPH Viscosity constants. */
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#define const_viscosity_alpha 0.8f
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#define const_viscosity_alpha_min \
  0.1f /* Values taken from (Price,2004), not used in legacy gadget mode */
#define const_viscosity_alpha_max \
  2.0f /* Values taken from (Price,2004), not used in legacy gadget mode */
#define const_viscosity_length \
  0.1f /* Values taken from (Price,2004), not used in legacy gadget mode */
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/* SPH Thermal conductivity constants. */
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#define const_conductivity_alpha \
  1.f /* Value taken from (Price,2008), not used in legacy gadget mode */
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/* Time integration constants. */
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#define const_max_u_change 0.1f
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/* Thermal energy per unit mass used as a constant for the isothermal EoS */
#define const_isothermal_internal_energy 20.2615290634f

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/* Self gravity stuff. */
#define const_gravity_multipole_order 1
#define const_gravity_a_smooth 1.25f
#define const_gravity_r_cut 4.5f
#define const_gravity_eta 0.025f
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/* Type of gradients to use (GIZMO_SPH only) */
/* If no option is chosen, no gradients are used (first order scheme) */
//#define GRADIENTS_SPH
#define GRADIENTS_GIZMO

/* Types of slope limiter to use (GIZMO_SPH only) */
/* Different slope limiters can be combined */
#define SLOPE_LIMITER_PER_FACE
#define SLOPE_LIMITER_CELL_WIDE
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/* Options to control the movement of particles for GIZMO_SPH. */
/* This option disables particle movement */
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#define GIZMO_FIX_PARTICLES
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/* Source terms */
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#define SOURCETERMS_NONE
//#define SOURCETERMS_SN_FEEDBACK
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#endif /* SWIFT_CONST_H */