/******************************************************************************* * This file is part of SWIFT. * Copyright (c) 2019 Loic Hausammann (loic.hausammann@epfl.ch) * * 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. * * 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 Lesser General Public License * along with this program. If not, see . * ******************************************************************************/ #ifndef SWIFT_GEAR_STAR_PART_H #define SWIFT_GEAR_STAR_PART_H /* Some standard headers. */ #include /* Read additional subgrid models */ #include "chemistry_struct.h" #include "feedback_struct.h" #include "particle_splitting_struct.h" #include "rt_struct.h" #include "star_formation_struct.h" #include "stars_stellar_type.h" #include "tracers_struct.h" /** * @brief Particle fields for the star particles. * * All quantities related to gravity are stored in the associate #gpart. */ struct spart { /*! Particle ID. */ long long id; /*! Pointer to corresponding gravity part. */ struct gpart* gpart; /*! Particle position. */ double x[3]; /* Offset between current position and position at last tree rebuild. */ float x_diff[3]; /* Offset between current position and position at last tree rebuild. */ float x_diff_sort[3]; /*! Particle velocity. */ float v[3]; /*! Star mass */ float mass; /*! Particle smoothing length. */ float h; struct { /* Number of neighbours. */ float wcount; /* Number of neighbours spatial derivative. */ float wcount_dh; } density; /*! Union for the birth time and birth scale factor */ union { /*! Birth time */ float birth_time; /*! Birth scale factor */ float birth_scale_factor; }; enum stellar_type star_type; /*! Star formation struct */ struct star_formation_spart_data sf_data; /*! Feedback structure */ struct feedback_spart_data feedback_data; /*! Tracer structure */ struct tracers_spart_data tracers_data; /*! Chemistry structure */ struct chemistry_spart_data chemistry_data; /*! Splitting structure */ struct particle_splitting_data split_data; #ifdef WITH_CSDS /* Additional data for the particle csds */ struct csds_part_data csds_data; #endif /*! Radiative Transfer data */ struct rt_spart_data rt_data; /*! Particle time bin */ timebin_t time_bin; /*! Tree-depth at which size / 2 <= h * gamma < size */ char depth_h; #ifdef SWIFT_DEBUG_CHECKS /* Time of the last drift */ integertime_t ti_drift; /* Time of the last kick */ integertime_t ti_kick; #endif #ifdef DEBUG_INTERACTIONS_STARS /*! Number of interactions in the density SELF and PAIR */ int num_ngb_density; /*! List of interacting particles in the density SELF and PAIR */ long long ids_ngbs_density[MAX_NUM_OF_NEIGHBOURS_STARS]; /*! Number of interactions in the feedback SELF and PAIR */ int num_ngb_feedback; /*! List of interacting particles in the force SELF and PAIR */ long long ids_ngbs_feedback[MAX_NUM_OF_NEIGHBOURS_STARS]; #endif } SWIFT_STRUCT_ALIGN; /** * @brief Contains all the constants and parameters of the stars scheme */ struct stars_props { /*! Resolution parameter */ float eta_neighbours; /*! Target weighted number of neighbours (for info only)*/ float target_neighbours; /*! Smoothing length tolerance */ float h_tolerance; /*! Tolerance on neighbour number (for info only)*/ float delta_neighbours; /*! Maximal number of iterations to converge h */ int max_smoothing_iterations; /*! Maximal change of h over one time-step */ float log_max_h_change; /*! Maximal time-step length of young stars (internal units) */ double max_time_step_young; /*! Maximal time-step length of old stars (internal units) */ double max_time_step_old; /*! Age threshold for the young/old transition (internal units) */ double age_threshold; /*! Age threshold for the transition to unlimited time-step size (internal * units) */ double age_threshold_unlimited; /*! Are we overwriting the stars' birth time read from the ICs? */ int overwrite_birth_time; /*! Value to set birth time of stars read from ICs */ float spart_first_init_birth_time; }; #endif /* SWIFT_GEAR_STAR_PART_H */