Merge branch 'TTFeedback' into 'master'

Tom feedback

Adds a new task, which depends on kick, to perform feedback. Currently, increases the thermal energy of the particle nearest a specified SN location by a specified amount.

See merge request !232

examples/DiscPatch/HydroStatic/dynamic.pro

@@ -8,7 +8,8 @@ iplot = 1 ; if iplot = 1, make plot of E/Lz conservation, else, simply compare f
 @physunits
 
 indir    = './'
-basefile = 'Disk-Patch-dynamic_'
+;basefile = 'Disc-Patch-dynamic_'
+basefile = 'Disc-Patch_'
 
 ; set properties of potential
 uL   = phys.pc                  ; unit of length
@@ -16,18 +17,27 @@ uM   = phys.msun                ; unit of mass
 uV   = 1d5                      ; unit of velocity
 
 ; properties of patch
-surface_density = 10.
+surface_density = 100.          ; surface density of all mass, which generates the gravitational potential
 scale_height    = 100.
-z_disk          = 200.;
+z_disk          = 200.          ;
+fgas            = 0.1           ; gas fraction
 gamma           = 5./3.
 
 ; derived units
 constG   = 10.^(alog10(phys.g)+alog10(uM)-2d0*alog10(uV)-alog10(uL)) ;
 pcentre  = [0.,0.,z_disk] * pc / uL
 utherm     = !pi * constG * surface_density * scale_height / (gamma-1.)
+temp       = (utherm*uV^2)*phys.m_h/phys.kb
 soundspeed = sqrt(gamma * (gamma-1.) * utherm)
 t_dyn      = sqrt(scale_height / (constG * surface_density))
-
+rho0       = fgas*(surface_density)/(2.*scale_height)
+print,' dynamical time = ',t_dyn,' = ',t_dyn*UL/uV/(1d6*phys.yr),' Myr'
+print,' thermal energy per unit mass = ',utherm
+print,' central density = ',rho0,' = ',rho0*uM/uL^3/m_h,' particles/cm^3'
+print,' central temperature = ',temp
+lambda = 2 * !pi * phys.G^1.5 * (scale_height*uL)^1.5 * (surface_density * uM/uL^2)^0.5 * phys.m_h^2 / (gamma-1) / fgas
+print,' lambda = ',lambda
+stop
 ;
 infile = indir + basefile + '*'
 spawn,'ls -1 '+infile,res

examples/DiscPatch/HydroStatic/makeIC.py

@@ -56,9 +56,10 @@ print "UnitVelocity_in_cgs: ", const_unit_velocity_in_cgs
 
 
 # parameters of potential
-surface_density = 10.
+surface_density = 100. # surface density of all mass, which generates the gravitational potential
 scale_height    = 100.
 gamma           = 5./3.
+fgas            = 0.1  # gas fraction
 
 # derived units
 const_unit_time_in_cgs = (const_unit_length_in_cgs / const_unit_velocity_in_cgs)
@@ -131,7 +132,7 @@ h      = glass_h[0:numGas]
 numGas = numpy.shape(pos)[0]
 
 # compute furthe properties of ICs
-column_density = surface_density * numpy.tanh(boxSize/2./scale_height)
+column_density = fgas * surface_density * numpy.tanh(boxSize/2./scale_height)
 enclosed_mass  = column_density * boxSize * boxSize
 pmass          = enclosed_mass / numGas
 meanrho        = enclosed_mass / boxSize**3

examples/Feedback/feedback.pro

+base = 'Feedback'
+inf  = 'Feedback_005.hdf5'
+
+blast  = [5.650488e-01, 5.004371e-01, 5.010494e-01] ; location of blast
+pos    = h5rd(inf,'PartType0/Coordinates')
+vel    = h5rd(inf,'PartType0/Velocities')
+rho    = h5rd(inf,'PartType0/Density')
+utherm = h5rd(inf,'PartType0/InternalEnergy')
+
+; shift to centre
+for ic=0,2 do pos[ic,*] = pos[ic,*] - blast[ic]
+
+;; distance from centre
+dist = fltarr(n_elements(rho))
+for ic=0,2 do dist = dist + pos[ic,*]^2
+dist = sqrt(dist)
+
+; radial velocity
+vr = fltarr(n_elements(rho))
+for ic=0,2 do vr = vr + pos[ic,*]*vel[ic,*]
+vr = vr / dist
+
+; 
+end

examples/Feedback/feedback.yml

+# Define the system of units to use internally. 
+InternalUnitSystem:
+  UnitMass_in_cgs:     1   # Grams
+  UnitLength_in_cgs:   1   # Centimeters
+  UnitVelocity_in_cgs: 1   # Centimeters per second
+  UnitCurrent_in_cgs:  1   # Amperes
+  UnitTemp_in_cgs:     1   # Kelvin
+
+# Parameters governing the time integration
+TimeIntegration:
+  time_begin: 0.    # The starting time of the simulation (in internal units).
+  time_end:   5e-2  # The end time of the simulation (in internal units).
+  dt_min:     1e-7  # The minimal time-step size of the simulation (in internal units).
+  dt_max:     1e-4  # The maximal time-step size of the simulation (in internal units).
+
+# Parameters governing the snapshots
+Snapshots:
+  basename:            Feedback # Common part of the name of output files
+  time_first:          0.       # Time of the first output (in internal units)
+  delta_time:          1e-2     # Time difference between consecutive outputs (in internal units)
+
+# Parameters governing the conserved quantities statistics
+Statistics:
+  delta_time:          1e-3 # Time between statistics output
+
+# Parameters for the hydrodynamics scheme
+SPH:
+  resolution_eta:        1.2348   # Target smoothing length in units of the mean inter-particle separation (1.2348 == 48Ngbs with the cubic spline kernel).
+  delta_neighbours:      0.1      # The tolerance for the targetted number of neighbours.
+  max_smoothing_length:  0.1       # Maximal smoothing length allowed (in internal units).
+  CFL_condition:         0.1      # Courant-Friedrich-Levy condition for time integration.
+
+# Parameters related to the initial conditions
+InitialConditions:
+  file_name:  ./Feedback.hdf5          # The file to read
+
+# Parameters for feedback
+
+SN:
+	time:    0.001 # time the SN explodes (internal units)
+	energy:  1.0   # energy of the explosion (internal units)
+	x:       0.5   # x-position of explostion (internal units)
+	y:       0.5   # y-position of explostion (internal units)
+	z:       0.5   # z-position of explostion (internal units)

examples/Feedback/makeIC.py

+###############################################################################
+ # This file is part of SWIFT.
+ # Copyright (c) 2013 Pedro Gonnet (pedro.gonnet@durham.ac.uk),
+ #                    Matthieu Schaller (matthieu.schaller@durham.ac.uk)
+ #               2016 Tom Theuns (tom.theuns@durham.ac.uk)
+ # 
+ # 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 <http://www.gnu.org/licenses/>.
+ # 
+ ##############################################################################
+
+import h5py
+import sys
+from numpy import *
+
+# Generates a swift IC file containing a cartesian distribution of particles
+# at a constant density and pressure in a cubic box
+
+# Parameters
+periodic= 1           # 1 For periodic box
+boxSize = 1.
+L = int(sys.argv[1])  # Number of particles along one axis
+rho = 1.              # Density
+P = 1.e-6             # Pressure
+gamma = 5./3.         # Gas adiabatic index
+eta = 1.2349          # 48 ngbs with cubic spline kernel
+fileName = "Feedback.hdf5" 
+
+#---------------------------------------------------
+numPart = L**3
+mass = boxSize**3 * rho / numPart
+internalEnergy = P / ((gamma - 1.)*rho)
+
+#--------------------------------------------------
+
+#File
+file = h5py.File(fileName, 'w')
+
+# Header
+grp = file.create_group("/Header")
+grp.attrs["BoxSize"] = boxSize
+grp.attrs["NumPart_Total"] =  [numPart, 0, 0, 0, 0, 0]
+grp.attrs["NumPart_Total_HighWord"] = [0, 0, 0, 0, 0, 0]
+grp.attrs["NumPart_ThisFile"] = [numPart, 0, 0, 0, 0, 0]
+grp.attrs["Time"] = 0.0
+grp.attrs["NumFilesPerSnapshot"] = 1
+grp.attrs["MassTable"] = [0.0, 0.0, 0.0, 0.0, 0.0, 0.0]
+grp.attrs["Flag_Entropy_ICs"] = 0
+
+#Runtime parameters
+grp = file.create_group("/RuntimePars")
+grp.attrs["PeriodicBoundariesOn"] = periodic
+
+#Units
+grp = file.create_group("/Units")
+grp.attrs["Unit length in cgs (U_L)"] = 1.
+grp.attrs["Unit mass in cgs (U_M)"] = 1.
+grp.attrs["Unit time in cgs (U_t)"] = 1.
+grp.attrs["Unit current in cgs (U_I)"] = 1.
+grp.attrs["Unit temperature in cgs (U_T)"] = 1.
+
+#Particle group
+grp = file.create_group("/PartType0")
+
+v  = zeros((numPart, 3))
+ds = grp.create_dataset('Velocities', (numPart, 3), 'f')
+ds[()] = v
+v = zeros(1)
+
+m = full((numPart, 1), mass)
+ds = grp.create_dataset('Masses', (numPart,1), 'f')
+ds[()] = m
+m = zeros(1)
+
+h = full((numPart, 1), eta * boxSize / L)
+ds = grp.create_dataset('SmoothingLength', (numPart,1), 'f')
+ds[()] = h
+h = zeros(1)
+
+u = full((numPart, 1), internalEnergy)
+ds = grp.create_dataset('InternalEnergy', (numPart,1), 'f')
+ds[()] = u
+u = zeros(1)
+
+
+ids = linspace(0, numPart, numPart, endpoint=False).reshape((numPart,1))
+ds = grp.create_dataset('ParticleIDs', (numPart, 1), 'L')
+ds[()] = ids + 1
+x      = ids % L;
+y      = ((ids - x) / L) % L;
+z      = (ids - x - L * y) / L**2;
+coords = zeros((numPart, 3))
+coords[:,0] = z[:,0] * boxSize / L + boxSize / (2*L)
+coords[:,1] = y[:,0] * boxSize / L + boxSize / (2*L)
+coords[:,2] = x[:,0] * boxSize / L + boxSize / (2*L)
+ds = grp.create_dataset('Coordinates', (numPart, 3), 'd')
+ds[()] = coords
+
+file.close()

examples/main.c

@@ -76,6 +76,7 @@ void print_help_message() {
          "Overwrite the CPU frequency (Hz) to be used for time measurements");
   printf("  %2s %8s %s\n", "-g", "",
          "Run with an external gravitational potential");
+  printf("  %2s %8s %s\n", "-F", "", "Run with feedback ");
   printf("  %2s %8s %s\n", "-G", "", "Run with self-gravity");
   printf("  %2s %8s %s\n", "-n", "{int}",
          "Execute a fixed number of time steps. When unset use the time_end "
@@ -147,6 +148,7 @@ int main(int argc, char *argv[]) {
   int nsteps = -2;
   int with_cosmology = 0;
   int with_external_gravity = 0;
+  int with_sourceterms = 0;
   int with_cooling = 0;
   int with_self_gravity = 0;
   int with_hydro = 0;
@@ -159,7 +161,7 @@ int main(int argc, char *argv[]) {
 
   /* Parse the parameters */
   int c;
-  while ((c = getopt(argc, argv, "acCdDef:gGhn:st:v:y:")) != -1) switch (c) {
+  while ((c = getopt(argc, argv, "acCdDef:FgGhn:st:v:y:")) != -1) switch (c) {
       case 'a':
         with_aff = 1;
         break;
@@ -185,6 +187,9 @@ int main(int argc, char *argv[]) {
           return 1;
         }
         break;
+      case 'F':
+        with_sourceterms = 1;
+        break;
       case 'g':
         with_external_gravity = 1;
         break;
@@ -443,6 +448,11 @@ int main(int argc, char *argv[]) {
   if (with_cooling) cooling_init(params, &us, &prog_const, &cooling_func);
   if (with_cooling && myrank == 0) cooling_print(&cooling_func);
 
+  /* Initialise the feedback properties */
+  struct sourceterms sourceterms;
+  if (with_sourceterms) sourceterms_init(params, &us, &sourceterms);
+  if (with_sourceterms && myrank == 0) sourceterms_print(&sourceterms);
+
   /* Construct the engine policy */
   int engine_policies = ENGINE_POLICY | engine_policy_steal;
   if (with_drift_all) engine_policies |= engine_policy_drift_all;
@@ -451,13 +461,14 @@ int main(int argc, char *argv[]) {
   if (with_external_gravity) engine_policies |= engine_policy_external_gravity;
   if (with_cosmology) engine_policies |= engine_policy_cosmology;
   if (with_cooling) engine_policies |= engine_policy_cooling;
+  if (with_sourceterms) engine_policies |= engine_policy_sourceterms;
 
   /* Initialize the engine with the space and policies. */
   if (myrank == 0) clocks_gettime(&tic);
   struct engine e;
   engine_init(&e, &s, params, nr_nodes, myrank, nr_threads, with_aff,
               engine_policies, talking, &us, &prog_const, &hydro_properties,
-              &potential, &cooling_func);
+              &potential, &cooling_func, &sourceterms);
   if (myrank == 0) {
     clocks_gettime(&toc);
     message("engine_init took %.3f %s.", clocks_diff(&tic, &toc),

src/Makefile.am

@@ -43,7 +43,7 @@ include_HEADERS = space.h runner.h queue.h task.h lock.h cell.h part.h const.h \
     engine.h swift.h serial_io.h timers.h debug.h scheduler.h proxy.h parallel_io.h \
     common_io.h single_io.h multipole.h map.h tools.h partition.h clocks.h parser.h \
     physical_constants.h physical_constants_cgs.h potential.h version.h \
-    hydro_properties.h riemann.h threadpool.h cooling.h cooling_struct.h
+    hydro_properties.h riemann.h threadpool.h cooling.h cooling_struct.h sourceterms.h
 
 
 # Common source files
@@ -52,7 +52,7 @@ AM_SOURCES = space.c runner.c queue.c task.c cell.c engine.c \
     units.c common_io.c single_io.c multipole.c version.c map.c \
     kernel_hydro.c tools.c part.c partition.c clocks.c parser.c \
     physical_constants.c potential.c hydro_properties.c \
-    runner_doiact_fft.c threadpool.c cooling.c
+    runner_doiact_fft.c threadpool.c cooling.c sourceterms.c
 
 # Include files for distribution, not installation.
 nobase_noinst_HEADERS = align.h approx_math.h atomic.h cycle.h error.h inline.h kernel_hydro.h kernel_gravity.h \
@@ -62,6 +62,7 @@ nobase_noinst_HEADERS = align.h approx_math.h atomic.h cycle.h error.h inline.h
 		 gravity.h gravity_io.h \
 		 gravity/Default/gravity.h gravity/Default/gravity_iact.h gravity/Default/gravity_io.h \
 		 gravity/Default/gravity_debug.h gravity/Default/gravity_part.h  \
+		 sourceterms.h \
 	 	 hydro.h hydro_io.h \
 		 hydro/Minimal/hydro.h hydro/Minimal/hydro_iact.h hydro/Minimal/hydro_io.h \
                  hydro/Minimal/hydro_debug.h hydro/Minimal/hydro_part.h \

src/cell.h

@@ -168,6 +168,9 @@ struct cell {
   /* Task for cooling */
   struct task *cooling;
 
+  /* Task for source terms */
+  struct task *sourceterms;
+
   /* Number of tasks that are associated with this cell. */
   int nr_tasks;
 

src/const.h

@@ -96,6 +96,10 @@
 //#define EXTERNAL_POTENTIAL_ISOTHERMALPOTENTIAL
 //#define EXTERNAL_POTENTIAL_DISC_PATCH
 
+/* Source terms */
+#define SOURCETERMS_NONE
+//#define SOURCETERMS_SN_FEEDBACK
+
 /* Cooling properties */
 #define COOLING_NONE
 //#define COOLING_CONST_DU

src/engine.c

@@ -68,7 +68,7 @@
 #include "units.h"
 #include "version.h"
 
-const char *engine_policy_names[15] = {"none",
+const char *engine_policy_names[16] = {"none",
                                        "rand",
                                        "steal",
                                        "keep",
@@ -82,7 +82,8 @@ const char *engine_policy_names[15] = {"none",
                                        "external_gravity",
                                        "cosmology_integration",
                                        "drift_all",
-                                       "cooling"};
+                                       "cooling",
+                                       "sourceterms"};
 
 /** The rank of the engine as a global variable (for messages). */
 int engine_rank;
@@ -187,6 +188,8 @@ void engine_make_hydro_hierarchical_tasks(struct engine *e, struct cell *c,
   const int is_fixdt = (e->policy & engine_policy_fixdt) == engine_policy_fixdt;
   const int is_with_cooling =
       (e->policy & engine_policy_cooling) == engine_policy_cooling;
+  const int is_with_sourceterms =
+      (e->policy & engine_policy_sourceterms) == engine_policy_sourceterms;
 
   /* Is this the super-cell? */
   if (super == NULL && (c->density != NULL || (c->count > 0 && !c->split))) {
@@ -216,16 +219,18 @@ void engine_make_hydro_hierarchical_tasks(struct engine *e, struct cell *c,
       /* Generate the ghost task. */
       c->ghost = scheduler_addtask(s, task_type_ghost, task_subtype_none, 0, 0,
                                    c, NULL, 0);
-
 #ifdef EXTRA_HYDRO_LOOP
       /* Generate the extra ghost task. */
       c->extra_ghost = scheduler_addtask(s, task_type_extra_ghost,
                                          task_subtype_none, 0, 0, c, NULL, 0);
 #endif
-
       if (is_with_cooling)
         c->cooling = scheduler_addtask(s, task_type_cooling, task_subtype_none,
                                        0, 0, c, NULL, 0);
+      /* add source terms */
+      if (is_with_sourceterms)
+        c->sourceterms = scheduler_addtask(s, task_type_sourceterms,
+                                           task_subtype_none, 0, 0, c, NULL, 0);
     }
   }
 
@@ -1791,11 +1796,18 @@ void engine_make_extra_hydroloop_tasks(struct engine *e) {
       scheduler_addunlock(sched, t->ci->init, t);
       scheduler_addunlock(sched, t, t->ci->kick);
     }
-
-    /* Cooling tasks should depend on kick and does not unlock anything since
-     it is the last task*/
+    /* Cooling tasks should depend on kick and unlock sourceterms */
     else if (t->type == task_type_cooling) {
       scheduler_addunlock(sched, t->ci->kick, t);
+      scheduler_addunlock(sched, t->ci->sourceterms, t);
+    }
+    /* source terms depend on cooling if performed, else on kick. It is the last
+       task */
+    else if (t->type == task_type_sourceterms) {
+      if (e->policy == engine_policy_cooling)
+        scheduler_addunlock(sched, t->ci->cooling, t);
+      else
+        scheduler_addunlock(sched, t->ci->kick, t);
     }
   }
 }
@@ -2820,6 +2832,11 @@ void engine_step(struct engine *e) {
     mask |= 1 << task_type_cooling;
   }
 
+  /* Add the tasks corresponding to sourceterms to the masks */
+  if (e->policy & engine_policy_sourceterms) {
+    mask |= 1 << task_type_sourceterms;
+  }
+
   /* Add MPI tasks if need be */
   if (e->policy & engine_policy_mpi) {
 
@@ -3162,7 +3179,8 @@ void engine_unpin() {
  * @param physical_constants The #phys_const used for this run.
  * @param hydro The #hydro_props used for this run.
  * @param potential The properties of the external potential.
- * @param cooling_func The properties of the cooling function.
+ * @param cooling The properties of the cooling function.
+ * @param sourceterms The properties of the source terms function.
  */
 void engine_init(struct engine *e, struct space *s,
                  const struct swift_params *params, int nr_nodes, int nodeID,
@@ -3171,7 +3189,8 @@ void engine_init(struct engine *e, struct space *s,
                  const struct phys_const *physical_constants,
                  const struct hydro_props *hydro,
                  const struct external_potential *potential,
-                 const struct cooling_function_data *cooling_func) {
+                 const struct cooling_function_data *cooling_func,
+                 struct sourceterms *sourceterms) {
 
   /* Clean-up everything */
   bzero(e, sizeof(struct engine));
@@ -3224,6 +3243,7 @@ void engine_init(struct engine *e, struct space *s,
   e->hydro_properties = hydro;
   e->external_potential = potential;
   e->cooling_func = cooling_func;
+  e->sourceterms = sourceterms;
   e->parameter_file = params;
   engine_rank = nodeID;
 

src/engine.h

@@ -44,6 +44,7 @@
 #include "potential.h"
 #include "runner.h"
 #include "scheduler.h"
+#include "sourceterms_struct.h"
 #include "space.h"
 #include "task.h"
 #include "units.h"
@@ -65,6 +66,7 @@ enum engine_policy {
   engine_policy_cosmology = (1 << 11),
   engine_policy_drift_all = (1 << 12),
   engine_policy_cooling = (1 << 13),
+  engine_policy_sourceterms = (1 << 14)
 };
 
 extern const char *engine_policy_names[];
@@ -207,6 +209,9 @@ struct engine {
   /* Properties of the cooling scheme */
   const struct cooling_function_data *cooling_func;
 
+  /* Properties of source terms */
+  struct sourceterms *sourceterms;
+
   /* The (parsed) parameter file */
   const struct swift_params *parameter_file;
 };
@@ -223,7 +228,8 @@ void engine_init(struct engine *e, struct space *s,
                  const struct phys_const *physical_constants,
                  const struct hydro_props *hydro,
                  const struct external_potential *potential,
-                 const struct cooling_function_data *cooling);
+                 const struct cooling_function_data *cooling,
+                 struct sourceterms *sourceterms);
 void engine_launch(struct engine *e, int nr_runners, unsigned int mask,
                    unsigned int submask);
 void engine_prepare(struct engine *e, int nodrift);

src/runner.c

@@ -53,6 +53,7 @@
 #include "kick.h"
 #include "minmax.h"
 #include "scheduler.h"
+#include "sourceterms.h"
 #include "space.h"
 #include "task.h"
 #include "timers.h"
@@ -111,6 +112,42 @@ const char runner_flip[27] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0,
 #include "runner_doiact_fft.h"
 #include "runner_doiact_grav.h"
 
+/**
+ * @brief Perform source terms
+ *
+ * @param r runner task
+ * @param c cell
+ * @param timer 1 if the time is to be recorded.
+ */
+void runner_do_sourceterms(struct runner *r, struct cell *c, int timer) {
+  const int count = c->count;
+  const double cell_min[3] = {c->loc[0], c->loc[1], c->loc[2]};
+  const double cell_width[3] = {c->width[0], c->width[1], c->width[2]};
+  struct sourceterms *sourceterms = r->e->sourceterms;
+  const int dimen = 3;
+
+  TIMER_TIC;
+
+  /* Recurse? */
+  if (c->split) {
+    for (int k = 0; k < 8; k++)
+      if (c->progeny[k] != NULL) runner_do_sourceterms(r, c->progeny[k], 0);
+    return;
+  }
+
+  if (count > 0) {
+
+    /* do sourceterms in this cell? */
+    const int incell =
+        sourceterms_test_cell(cell_min, cell_width, sourceterms, dimen);
+    if (incell == 1) {
+      sourceterms_apply(r, sourceterms, c);
+    }
+  }
+
+  if (timer) TIMER_TOC(timer_dosource);
+}
+
 /**
  * @brief Calculate gravity acceleration from external potential
  *
@@ -1340,6 +1377,9 @@ void *runner_main(void *data) {
         case task_type_cooling:
           runner_do_cooling(r, t->ci, 1);
           break;
+        case task_type_sourceterms:
+          runner_do_sourceterms(r, t->ci, 1);
+          break;
         default:
           error("Unknown task type.");
       }

src/sourceterms.c

+/*******************************************************************************
+ * This file is part of SWIFT.
+ * Copyright (c) 2016 Tom Theuns (tom.theuns@durham.ac.uk)
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ ******************************************************************************/
+
+/* Config parameters. */
+#include "../config.h"
+
+/* Local includes. */
+#include "const.h"
+#include "hydro.h"
+#include "parser.h"
+#include "units.h"
+
+/* This object's header. */
+#include "sourceterms.h"
+
+/**
+ * @brief Initialises the sourceterms
+ *
+ * @param parameter_file The parsed parameter file
+ * @param us The current internal system of units
+ * @param source the structure that has all the source term properties
+ */
+void sourceterms_init(const struct swift_params* parameter_file,
+                      struct UnitSystem* us, struct sourceterms* source) {
+#ifdef SOURCETERMS_SN_FEEDBACK
+  supernova_init(parameter_file, us, source);
+#endif /* SOURCETERMS_SN_FEEDBACK */
+};
+
+/**
+ * @brief Prints the properties of the source terms to stdout
+ * @param source the structure that has all the source term properties
+ */
+void sourceterms_print(struct sourceterms* source) {
+#ifdef SOURCETERMS_NONE
+  error(" no sourceterms defined yet you ran with -F");
+#ifdef SOURCETERMS_SN_FEEDBACK
+#error can't have sourceterms when defined SOURCETERMS_NONE
+#endif
+#endif
+#ifdef SOURCETERMS_SN_FEEDBACK
+  supernova_print(source);
+#endif /* SOURCETERMS_SN_FEEDBACK */
+};