[gmx-users] Electric field unit

David van der Spoel spoel at xray.bmc.uu.se
Thu Jan 14 15:33:48 CET 2016


On 14/01/16 09:50, mah maz wrote:
> Hi David,
>
> In the manual 4.6.7, Page8. It seems logical since the force unit is in KJ/
> mol.nm. And it can roughly be deduced from ions movements.
> What is the use of FIELDFAC in src code then?
>
It converts from V/nm to MD units. You can find its definition in 
physics.h (or units.h or something like that).

> thank you.
>
> On Thu, Jan 14, 2016 at 10:54 AM, mah maz <mahmaz71 at gmail.com> wrote:
>
>> Dear users,
>>
>> What is the electric field unit in gromacs? In the manual it is KJ/mol.nm.e
>> but in the source code I encountered V/nm which is about 100 times KJ/mol.
>> nm.e.
>>
>> Thank you.
>>


-- 
David van der Spoel, Ph.D., Professor of Biology
Dept. of Cell & Molec. Biol., Uppsala University.
Box 596, 75124 Uppsala, Sweden. Phone:	+46184714205.
spoel at xray.bmc.uu.se    http://folding.bmc.uu.se


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