[mesa-users] dlnkappa/dlnT at const P, not rho?

[Ireland, Lewis]

Thanks for your reply!

I have tried multiple times to get it in that form, with no luck. 

I considered using the triple product rule: (dlnkappa/dlnT)_p = - (dlnp/dlnT)_kappa / (dlnp/dlnkappa)_T

But then how do I get (dlnp/dlnT)_kappa from the code? I’m running in circles with it!

Lewis



On 21 May 2015, at 16:06, Josiah Schwab <jwschwab at berkeley.edu> wrote:

> 
> On 21 May 2015 at 05:08 PDT, Ireland, Lewis wrote:
> 
>> I need dlnkap/dlnT when P = const, but there is only dlnkap/dlnT when
>> rho=const available. Is there any option to do this?
> 
> kap also gives on dlnkap/dlnRho when T=const, so you should be able to
> use various chain rules to get things into the form you want.  The eos
> can give you the thermodynamic partials that you need.
> 
> Josiah