Water Sim
 &cntrl
  imin = 0, ntb = 0,
  igb = 0, ntpr = 1, ntwx = 1,
  ntt = 3, gamma_ln = 1.0,
  tempi = 10.0, temp0 = 300.0
  nstlim = 20001, dt = 0.0005,
  cut = 999
 /
