

```python
from DREAM.DREAMSettings import DREAMSettings
from DREAM.DREAMOutput import DREAMOutput
from DREAM import runiface
import numpy as np
import h5py

ds = DREAMSettings()

# Set simulation parameters
ds.collisions.collfreq_mode = 'full'
ds.eqsys.E_field.setType(Efield.TYPE_SELFCONSISTENT)
ds.eqsys.E_field.setBoundaryCondition(Efield.BC_TYPE_PRESCRIBED, inverse_wall_time=0, V_loop_wall_R0=0)
ds.eqsys.T_cold.setType(T_cold.TYPE_SELFCONSISTENT)
ds.eqsys.n_i.addIon(name='D', Z=1, iontype=Ions.IONS_DYNAMIC_FULLY_IONIZED, n=1e20)
ds.eqsys.n_i.addIon(name='Ar', Z=18, iontype=Ions.IONS_DYNAMIC_NEUTRAL, n=1e20)
ds.eqsys.f_hot.setInitialProfiles(rn0=0, n0=1e20, rT0=0, T0=100)
ds.eqsys.f_hot.setAdvectionInterpolationMethod(ad_int=FHot.AD_INTERP_TCDF)
ds.eqsys.f_hot.setBoundaryCondition(bc=FHot.BC_F_0)
ds.eqsys.f_hot.setParticleSource(particleSource=FHot.PARTICLE_SOURCE_IMPLICIT)
ds.eqsys.f_hot.setSynchrotronMode(smode=FHot.SYNCHROTRON_MODE_INCLUDE)
ds.eqsys.f_hot.enableIonJacobian(False)
ds.eqsys.n_re.setAvalanche(avalanche=Runaways.AVALANCHE_MODE_NEGLECT)
ds.eqsys.j_ohm.setCorrectAmplitude(False)
ds.hottailgrid.setEnabled(False)
ds.runawaygrid.setEnabled(False)
ds.radialgrid.setB0(5)
ds.radialgrid.setMinorRadius(0.22)
ds.radialgrid.setWallRadius(0.22)
ds.radialgrid.setNr(10)
ds.timestep.setTmax(1e-6)
ds.timestep.setNt(10)
ds.solver.setType(Solver.LINEAR_IMPLICIT)
ds.solver.tolerance.set(reltol=1e-4)
ds.solver.setVerbose(False)
ds.other.include('fluid', 'lnLambda','nu_s','nu_D')

# Save settings to HDF5 file
ds.save('init_settings.h5')

# Run simulation
do = runiface(ds, 'output_init.h5')

# Restart simulation
for i in range(2):
    ds = DREAMSettings(ds)
    ds.fromOutput('output_init.h5')
    ds.timestep.setTmax(1e-5)
    ds.timestep.setNt(10)
    ds.save('restart_settings.h5')
    do = runiface(ds, 'output_restart.h5')
```

This code sets up a self-consistent fluid DREAM run, where no kinetic equations are solved, but the electric field and temperature are evolved self-consistently. The code imports necessary modules and classes from the DREAM library, sets up the simulation parameters, sets up the radial grid, sets the time stepper, adds ions, sets the electric field and cold electron temperature, sets up the hot tail grid, disables the runaway grid, sets the solver type and its parameters, and includes other necessary settings. The code then saves these settings to an HDF5 file and runs the simulation. After the initial run, the code restarts the simulation twice, each time loading the settings from the output of the previous run, adjusting the time stepper, and saving the new settings to an HDF5 file before running the simulation again.