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# 
# File: simpleWave.pre 
# 
# Purpose: Pre file that simulates an electromagnetic wave. 
# 
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# 
# Define variables in lines starting with ¿$¿ for later use 
# 
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# Number of grid cells 
$ NX = 40 
$ NY = 20 
$ NZ = 20 

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# 
# Define the simulation parameters 
# 
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# The dimension and precision of the simulation 
dimension = 2 
floattype = double 

# Time step of integration and number of steps 
dt = 1.1713e-15 
nsteps = 30 

# Dump output into an HDF5 file every 5 time steps 
dumpPeriodicity = 5 

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# 
# Define the grid: the physical problem and the number of cells 
# 
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<Grid globalGrid> 
  kind = uniCartGrid
  numCells = [NX NY NZ]

  # All physical values in units 
  lengths = [1.6e-05 5.0e-05 5.0e-05] 
</Grid> 

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# 
# Define the decomposition 
# 
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<Decomp decomp> 
  # Decomposition planes cut entire region 
  decompType = regular 
  # The periodic directions 
  periodicDirs = [1 2] 
</Decomp>

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# 
# Define the EM field and describe its boundary conditions 
# 
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<EmField myYeeEmField> 
  # Uses FDTD model on a Yee mesh 
  kind = yeeEmField

  <BoundaryCondition xLowerWaveLauncher> 
    # Value given by function 
    kind = variable 
    lowerBounds = [0 0 0] # Lower limits 
    upperBounds = [1 NY NZ] # Upper limits 
    indices = [1] # Ey polarized 
    function = expression 
    expression = 1.e6*sin(4.71e14*t) 
  </BoundaryCondition> 

</EmField>