[MITgcm-support] MITgcm-support] what is obcs balance?

[Nico Wienders]

I still don't understand. LOW_OBCS_BALANCE=.TRUE.
means:

that the the flow across each face with be equal to zero?

or

That the sum of the flow across each (4) face will be zero?
(which would have more physical justification).






On Jul 14, 2009, at 10:17 AM, Martin Losch wrote:

> David,
>
> you interpreted the code correctly, and you also observed correctly  
> that this is not documented in the manual.
>
> Martin
>
> On Jul 14, 2009, at 3:36 PM, David Hebert wrote:
>
>> Hi everyone,
>>
>> Thanks Jean-Michel for clarifying the #undef NONLIN_FRSURF flag.
>>
>> I am now looking at obcs_calc.F and the portions related to  
>> ALLOW_OBCS_BALANCE. If I am not mistaken, if I use  
>> ALLOW_OBCS_BALANCE, the code computes the flux through one  
>> particular face as the sum of  area * OB[EWNS][uv].  If the sum  
>> over the whole face is not zero, the code then subtracts the sum/ 
>> area off that particular face, forcing the boundary flux to be  
>> zero. Is this true? If not, can someone perhaps provide a  
>> description of what is happening? I am not seeing this description  
>> in the manual.
>>
>> Thank you,
>>
>> David
>>
>> _______________________________________________
>> MITgcm-support mailing list
>> MITgcm-support at mitgcm.org
>> http://mitgcm.org/mailman/listinfo/mitgcm-support
>
> _______________________________________________
> MITgcm-support mailing list
> MITgcm-support at mitgcm.org
> http://mitgcm.org/mailman/listinfo/mitgcm-support