Parameters for the flow algorithm

• ahfinder::ahf_flow (steerable)
  The fow algotithm is used by setting ahf_flow = "yes". The default is "no"
• ahfinder::ahf_flowiter (steerable)
  Sets the maximum number of iterations for the flow algorithm. The default value is 200.
• ahfinder::ahf_flowtol
  Sets the tolerance for the flow. The default value is 0.0001.
• ahfinder::ahf_flowa
  Sets the $\alpha$ parameter for the flow. The default value is 0.01.
• ahfinder::ahf_flowb
  Sets the $\beta$ parameter for the flow. The default value is 0.5.
• ahfinder::ahf_flowh
  Sets the weight of $H$ flow. The default value is 0.0.
• ahfinder::ahf_flowc
  Sets the weight of $C$ flow. The default value is 1.0.
• ahfinder::ahf_flown
  Sets the weight of $N$ flow (not yet implemented). The default value is 0.0.

The character of the different flows and the $\alpha$ and $\beta$ parameters are described in Carsten Gundlach's paper on his pseudo-spectral apparent horizon finder (gr-qc/9707050).