[gmx-users] The force unit in the gromacs

[David van der Spoel]

齐文鹏 wrote:
> Hello everynoe:
>  
> I simulate to stretch a DNA molecule. But there is no suitable methods, 
> so I change the sorce of the Gromacs.
>  
> Before the update_md I add forces on some atomes. But I am not sure the 
> force's unit is right or not.
>  
>  
> In the manual, The forcce unit is kj/(mol*nm), so it is 1kj/(mol*nm) = 
> 1.66 pn.
>  
> But during the calaulation, the force's unit changed or not? Can anyoe 
> tell me the force unit during the calculation.
The above is correct, it definitely does not change during calculations.
>  
>  
>  
> Thank you very much!!
>  
> 
> 
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-- 
David.
________________________________________________________________________
David van der Spoel, PhD, Assoc. Prof., Molecular Biophysics group,
Dept. of Cell and Molecular Biology, Uppsala University.
Husargatan 3, Box 596,  	75124 Uppsala, Sweden
phone:	46 18 471 4205		fax: 46 18 511 755
spoel at xray.bmc.uu.se	spoel at gromacs.org   http://xray.bmc.uu.se/~spoel
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