[mesa-users] gradient control for mesh adjustment

[Abhisek Datta]

Hi,

I cant understand the gradient controls for mesh adjustment as given in
mesa/star/public/star_defaults.dek .

         ! gradient controls for mesh adjustment
         ! "gradient" here means the difference in value from one grid
point to the next.


         use_other_mesh_functions = .false.


         ! pressure gradient
         ! P_function = P_function_weight*log10(P)
           P_function_weight = 30


         ! temperature gradient
         ! T_function1 = T_function1_weight*log10(T)
           T_function1_weight = 80

What does changing this line - use_other_mesh_functions = .false. to true
do?

Also what is the meaning of P_function ? Which is the pressure gradient?
How does it control the mesh adjustment?

Can anyone help me out to understand these?

Abhisek
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